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Records |
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Author |
Napierala, C.; Lepoittevin, C.; Edely, M.; Sauques, L.; Giovanelli, F.; Laffez, P.; Van Tendeloo, G. |
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Title |
Moderate pressure synthesis of rare earth nickelate with metal-insulator transition using polymeric precursors |
Type |
A1 Journal article |
| |
Year  |
2010 |
Publication |
Journal of solid state chemistry |
Abbreviated Journal |
J Solid State Chem |
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Volume |
183 |
Issue |
7 |
Pages |
1663-1669 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
Rare earth nickelates exhibit a reversible metalsemiconductor phase transition that is, in the infrared range, responsible for a thermo-optical contrast. The state of the art synthesis of these compounds usually requires high oxygen pressure to stabilize Ni in the oxidation state 3+. In this work, using polymeric precursor associated with moderate pressure annealing, we show that it is possible to obtain fully oxidized rare earth nickelate with metalinsulator transition. Using thermogravimetric analysis, X-ray diffraction and transmission electronic microscopy we compare different samples synthesized at different oxygen pressures and demonstrate their structural similarity. Thermo-optical properties were measured, in the infrared range, using reflectance measurements and confirmed the metalinsulator transition at 60 °C in both samples.TEM observations lead to the conclusion that the structure commonly obtained at 175 bar is perfectly observed in the 20 bar sample without major structural defects. The two samples exhibit a thermochromic behavior and thermo-optical properties of the two samples are equivalent. |
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Corporate Author |
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Thesis |
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Place of Publication |
London |
Editor |
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Language |
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Wos |
000279711200028 |
Publication Date |
2010-05-08 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0022-4596; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
2.299 |
Times cited |
3 |
Open Access |
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Notes |
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Approved |
Most recent IF: 2.299; 2010 IF: 2.261 |
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Call Number |
UA @ lucian @ c:irua:83679 |
Serial |
2156 |
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Author |
Laffez, P.; Chen, X.Y.; Banerjee, G.; Pezeril, T.; Rossell, M.D.; Van Tendeloo, G.; Lacorre, P.; Liu, J.M.; Liu, Z.-G. |
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Title |
Growth of La2Mo2O9 films on porous Al2O3 substrates by radio frequency magnetron sputtering |
Type |
A1 Journal article |
| |
Year |
2006 |
Publication |
Thin solid films : an international journal on the science and technology of thin and thick films |
Abbreviated Journal |
Thin Solid Films |
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Volume |
500 |
Issue |
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Pages |
27-33 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Lausanne |
Editor |
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Language |
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Wos |
000235764600006 |
Publication Date |
2005-12-16 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0040-6090; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
1.879 |
Times cited |
15 |
Open Access |
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Notes |
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Approved |
Most recent IF: 1.879; 2006 IF: 1.666 |
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Call Number |
UA @ lucian @ c:irua:57000 |
Serial |
1396 |
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Author |
Laffez, P.; Lebedev, O.I.; Ruello, P.; Desfeux, R.; Banerjee, G.; Capon, F. |
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Title |
Evidence of strain induced structural change in hetero-epitaxial NdNiO3 thin films with metal-insulator transition |
Type |
A1 Journal article |
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Year |
2004 |
Publication |
European physical journal: applied physics |
Abbreviated Journal |
Eur Phys J-Appl Phys |
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Volume |
25 |
Issue |
1 |
Pages |
25-31 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
Neodymium nickelate thin films have been prepared on NdGaO3 substrates by RF magnetron sputtering and post-annealing treatment under oxygen pressure. Transport properties are found to depend strongly on film thickness. Thick films show transport properties close to bulk ceramics, while very thin films exhibit a large transition from metal to insulator which occurs over a wide temperature range with high resistivity. Structure and surface morphology of the films have been investigated by Transmission Electron Microscopy (TEM) and Atomic Force Microscopy (AFM). Thin films (approximate to17 nm) grow heteroepitaxially, while thicker films (approximate to73 nm) show a granular structure. The thinnest sample suggests a symmetry change induced by the epitaxial strain of the substrate. This paper discusses the relationship between microstructure and transport properties. |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Paris |
Editor |
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Language |
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Wos |
000187286000003 |
Publication Date |
2003-12-15 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1286-0042;1286-0050; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
0.684 |
Times cited |
12 |
Open Access |
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Notes |
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Approved |
Most recent IF: 0.684; 2004 IF: 0.745 |
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Call Number |
UA @ lucian @ c:irua:103256 |
Serial |
1096 |
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Author |
Gibaud, A.; Hazra, S.; Sella, C.; Laffez, P.; Désert, A.; Naudon, A.; Van Tendeloo, G. |
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Title |
Particle layering in the ceramic-metal thin film Pt-Al2O3 |
Type |
A1 Journal article |
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Year |
2001 |
Publication |
Physical review : B : condensed matter and materials physics |
Abbreviated Journal |
Phys Rev B |
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Volume |
63 |
Issue |
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Pages |
193407,1-4 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Lancaster, Pa |
Editor |
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Language |
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Wos |
000168814200019 |
Publication Date |
2002-07-27 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0163-1829;1095-3795; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
3.836 |
Times cited |
25 |
Open Access |
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Notes |
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Approved |
Most recent IF: 3.836; 2001 IF: NA |
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Call Number |
UA @ lucian @ c:irua:54739 |
Serial |
2563 |
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Author |
Laffez, P.; Retoux, R.; Boullay, P.; Zaghrioui, M.; Lacorre, P.; Van Tendeloo, G. |
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Title |
Transmission electron microscopy of NdNiO3 thin films on silicon substrates |
Type |
A1 Journal article |
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Year |
2000 |
Publication |
European physical journal: applied physics |
Abbreviated Journal |
Eur Phys J-Appl Phys |
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Volume |
12 |
Issue |
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Pages |
55-60 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Paris |
Editor |
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Language |
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Wos |
000165528800006 |
Publication Date |
2003-06-20 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1286-0042;1286-0050; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
0.684 |
Times cited |
16 |
Open Access |
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Notes |
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Approved |
Most recent IF: 0.684; 2000 IF: 0.535 |
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Call Number |
UA @ lucian @ c:irua:54781 |
Serial |
3711 |
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Author |
Monot, I.; Tancret, F.; Laffez, P.; Van Tendeloo, G.; Desgardin, G. |
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Title |
Microstructure and properties of oxygen controlled melt textured NdBaCuO superconductive ceramics |
Type |
A1 Journal article |
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Year |
1999 |
Publication |
Technology |
Abbreviated Journal |
Mater Sci Eng B-Adv |
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Volume |
65 |
Issue |
1 |
Pages |
26-34 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
Nd1+xBa2-xCu3O7-delta (123) bulk superconductors have been synthesised by the oxygen controlled melt growth method. Unlike the YBaCuO system, platinum doping or Nd4Ba2Cu2O10 (422) rich compositions do not refine the peritectic '422' secondary phase, but the latter improves the microstructural quality. Low oxygen partial pressure and high purity precursors are necessary to achieve in a reproducible manner high T-c and J(c) (up to 56 000 A/cm(2) in 0T and 30 000 A/cm(2) under 1.5T). The fishtail effect observed at 77 K is compared with the one observed in the YBCO system, and is discussed in terms of oxygen deficiency, Nd-Ba substitution, defects and vortex lattice. Our TEM observations did not evidence any Nd-Ba substituted clusters in the Nd123 matrix; however, some diffuse streaks, observed in the [100] zone ED pattern, support the fact that the source of the peak effect in this system is mainly due to oxygen disorder and low stability of the orthorhombic phase. (C) 1999 Elsevier Science S.A. All rights reserved. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Lausanne |
Editor |
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Language |
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Wos |
000083432000005 |
Publication Date |
2002-07-25 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0921-5107; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
2.552 |
Times cited |
5 |
Open Access |
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Notes |
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Approved |
Most recent IF: 2.552; 1999 IF: 0.690 |
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Call Number |
UA @ lucian @ c:irua:104286 |
Serial |
2060 |
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| Permanent link to this record |
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Author |
Tancret, F.; Monot, I.; Laffez, P.; Van Tendeloo, G.; Desgardin, G. |
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Title |
Preparation and characterization of melt textured NdBa2Cu3O7- bulk superconducting ceramics |
Type |
A1 Journal article |
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Year |
1998 |
Publication |
European physical journal: applied physics |
Abbreviated Journal |
Eur Phys J-Appl Phys |
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Volume |
1 |
Issue |
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Pages |
185-190 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Paris |
Editor |
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Language |
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Wos |
000073229800009 |
Publication Date |
2003-06-20 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1286-0042;1286-0050; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
0.684 |
Times cited |
2 |
Open Access |
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Notes |
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Approved |
Most recent IF: 0.684; 1998 IF: NA |
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Call Number |
UA @ lucian @ c:irua:25690 |
Serial |
2697 |
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| Permanent link to this record |
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Author |
Barnabé, A.; Millange, F.; Maignan, A.; Hervieu, M.; Raveau, B.; Van Tendeloo, G.; Laffez, P. |
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Title |
Barium-based manganites Ln1-xBaxMnO3 with Ln = {Pr, La}: phase transitions and magnetoresistance properties |
Type |
A1 Journal article |
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Year |
1998 |
Publication |
Chem. mater. |
Abbreviated Journal |
Chem Mater |
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Volume |
10 |
Issue |
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Pages |
252-259 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
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Editor |
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Language |
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Wos |
000071624400037 |
Publication Date |
2002-07-26 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0897-4756;1520-5002; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
9.466 |
Times cited |
48 |
Open Access |
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Notes |
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Approved |
Most recent IF: 9.466; 1998 IF: 3.359 |
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Call Number |
UA @ lucian @ c:irua:25689 |
Serial |
220 |
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Author |
Monot, I.; Verbist, K.; Hervieu, M.; Laffez, P.; Delamare, M.P.; Wang, J.; Desgardin, G.; Van Tendeloo, G. |
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Title |
Microstructure and flux pinning properties of melt textured grown doped YBa2Cu3O7-\delta |
Type |
A1 Journal article |
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Year |
1997 |
Publication |
Physica: C : superconductivity |
Abbreviated Journal |
Physica C |
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Volume |
274 |
Issue |
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Pages |
253-266 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
Amsterdam |
Editor |
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Language |
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Wos |
A1997WJ46100010 |
Publication Date |
0000-00-00 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0921-4534 |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
1.404 |
Times cited |
33 |
Open Access |
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Notes |
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Approved |
Most recent IF: 1.404; 1997 IF: 2.199 |
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Call Number |
UA @ lucian @ c:irua:21427 |
Serial |
2050 |
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| Permanent link to this record |
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Author |
Laffez, P.; Van Tendeloo, G.; Seshadri, R.; Hervieu, M.; Martin, C.; Maignan, A.; Raveau, B. |
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Title |
Microstructural and physical properties of layered manganite oxides related to the magnetoresistive perovskites |
Type |
A1 Journal article |
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Year |
1996 |
Publication |
Journal of applied physics |
Abbreviated Journal |
J Appl Phys |
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Volume |
80 |
Issue |
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Pages |
5850-5856 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
American Institute of Physics |
Place of Publication |
New York, N.Y. |
Editor |
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Language |
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Wos |
A1996VU98700045 |
Publication Date |
2002-07-26 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0021-8979; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
2.183 |
Times cited |
36 |
Open Access |
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Notes |
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Approved |
no |
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Call Number |
UA @ lucian @ c:irua:17848 |
Serial |
2039 |
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| Permanent link to this record |
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Author |
Laffez, P.; Van Tendeloo, G.; Millange, F.; Caignaert, V.; Hervieu, M.; Raveau, B. |
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Title |
Structural phase transition at low temperature, corresponding to charge ordering in the CMR perovskites LN0.5A0.5MNO3 |
Type |
A1 Journal article |
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Year |
1996 |
Publication |
Materials research bulletin |
Abbreviated Journal |
Mater Res Bull |
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Volume |
31 |
Issue |
8 |
Pages |
905-911 |
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Keywords |
A1 Journal article; Electron microscopy for materials research (EMAT) |
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Abstract |
The magneto resistive perovskites Nd0.5Sr0.5MnO3 and Pr0.5Sr0.41Ca0.09MnO3 undergo a transition from anti ferromagnetic insulator to ferromagnetic metal as function of temperature. The room temperature phase is orthorhombic with the space group Imma and the cell parameters a approximate to root 2a(p), b approximate to 2a(p), and c approximate to root 2a(p). A structural phase transition related to charge ordering accompanying the transition from ferromagnetic state to antiferromagnetic state has been evidenced by low temperature electron diffraction. This transition is reversible and a new superstructure, with a P-type orthorhombic cell. and lattice parameters parameters a approximate to 2 root 2a(p), b approximate to 2a(p), and c approximate to root 2a(p), is formed. |
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Address |
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Corporate Author |
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Thesis |
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Publisher |
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Place of Publication |
New York, N.Y. |
Editor |
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Language |
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Wos |
A1996UZ37300002 |
Publication Date |
2002-07-25 |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0025-5408; |
ISBN |
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Additional Links |
UA library record; WoS full record; WoS citing articles |
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Impact Factor |
2.288 |
Times cited |
25 |
Open Access |
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Notes |
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Approved |
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Call Number |
UA @ lucian @ c:irua:99650 |
Serial |
3246 |
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| Permanent link to this record |
