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Author | Maignan, A.; Martin, C.; Van Tendeloo, G.; Hervieu, M.; Raveau, B. | ||||
Title | Size mismatch : a crucial factor for generating a spin-glass insulator in manganites | Type | A1 Journal article | ||
Year | 1999 | Publication | Physical review : B : condensed matter and materials physics | Abbreviated Journal | Phys Rev B |
Volume | 60 | Issue | 22 | Pages | 15214-15219 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
Abstract | Thr structural, electronic, and magnetic properties of the highly mismatched perovskite oxides, Th(0.35)A(0.65)MnO(3), where Ais for the alkaline earth divalent cations (Ca, Ba, Sr), which are all characterized by the same large tolerance factor (t=0.934), have been investigated by using electron microscopy, electrical resistivity, magnetic susceptibility, and magnetization. It is clearly established that a transition from ferromagnetic metallic towards spin-glass insulator samples is induced as the A-site cationic size mismatch is increased. Moreover, the magnetoresistance (MR) properties of these manganites are strongly reduced for the spin-glass insulators, demonstrating that the A-sire cationic disorder is detrimental for the colossal MR properties. Based on these results, a new electronic and magnetic diagram is established that shows that the A-site disorder, rather than the A-site average cationic size (or t) is the relevant factor for generating spin-glass insulating manganites. [S0163-1829(99)01746-4]. | ||||
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Language | Wos | 000084631600039 | Publication Date | 2002-07-27 | |
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ISSN | 0163-1829;1095-3795; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | 3.836 | Times cited | 75 | Open Access | |
Notes | Approved | Most recent IF: 3.836; 1999 IF: NA | |||
Call Number | UA @ lucian @ c:irua:104280 | Serial | 3038 | ||
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Author | Maignan, A.; Martin, C.; Van Tendeloo, G.; Hervieu, M.; Raveau, B. | ||||
Title | Ferromagnetism and magnetoresistance in monolayered manganites Ca2-xLnxMnO4 | Type | A1 Journal article | ||
Year | 1998 | Publication | Journal of materials chemistry | Abbreviated Journal | J Mater Chem |
Volume | 8 | Issue | 11 | Pages | 2411-2416 |
Keywords | A1 Journal article; Electron microscopy for materials research (EMAT) | ||||
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Cambridge | Editor | ||
Language | Wos | 000076974900019 | Publication Date | 2002-07-26 | |
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Series Volume | Series Issue | Edition | |||
ISSN | 0959-9428;1364-5501; | ISBN | Additional Links | UA library record; WoS full record; WoS citing articles | |
Impact Factor | Times cited | 30 | Open Access | ||
Notes | Approved | Most recent IF: NA | |||
Call Number | UA @ lucian @ c:irua:25684 | Serial | 1182 | ||
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