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	Author	Weill; Chevalier; Chambon; Tressaud; Darriet; Etourneau; Van Tendeloo, G.
	Title	Electron-microscopy investigation of superconducting la2cu(o, f)4+y oxyfluoride			Type	A1 Journal article
	Year	1993	Publication	European journal of solid state and inorganic chemistry	Abbreviated Journal
	Volume	30	Issue	11	Pages	1095-1108
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	The fluorination of La2CuO4 can lead to different oxyfluoride compounds depending on the TF2 temperature of the fluorine gas treatment. When 150-degrees-C T(F2) less-than-or-equal-to 200-degrees-c less-than-or-equal-to 200-degrees-C a superconducting material is obtained. Previous neutron diffraction experiments as well as the EXAFS measurements at the La L(III) edge indicate that extra anions lie in an interstitial site between the two (LaO) layers. Electron diffraction patterns clearly show the existence of an incommensurate modulation due to the presence of shear planes. A second phase is also pointed out which can be obtained as a major component when the fluorination temperature is raised to 230-degrees-C. This phase which is not a superconductor crystallizes with the monoclinic symmetry.
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	Corporate Author				Thesis
	Publisher		Place of Publication	Paris	Editor
	Language		Wos	A1993MX13500006	Publication Date	0000-00-00
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0992-4361	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor		Times cited	2	Open Access
	Notes				Approved	no
	Call Number	UA @ lucian @ c:irua:95476			Serial	954
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