NDLI: Structural features of the La-Sr-Fe-Co-O system

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Structural features of the La-Sr-Fe-Co-O system

Content Provider	Semantic Scholar
Author	Cziráki, Ágnes Gerőcs, Imre Köteles, M. Gábris, Aurél Pogány, L. Bakonyi, Imre Klencsár, Zoltán Vértes, Attila De, Subodh Kumar Barman, Anjan Ghosh, Manojit Biswas, Sangram Chatterjee, S. Arnold, B. Bauer, H. D. Wetzig, Klaus Ulhaq-Bouillet, C. Pierron-Bohnes, Véronique
Copyright Year	2001
Abstract	Abstract:A structural study has been performed on the La0.8Sr0.2FexCo1-xO3 (x = 0.025 to 0.3) system displaying large magnetoresistance (MR) at room temperature. A detailed analysis of the crystal structure and microstructure was done by X-ray diffraction (XRD), transmission and scanning electron microscopy (TEM and SEM). The atomic resolution TEM images and the appearing superreflections in the corresponding SAED patterns revealed that a superstructure is formed due to the presence of iron. The correlation between the ordered microstructure and the observed large MR ratio is discussed. 57Fe Mössbauer spectroscopy was utilized to gain information on the valence state of iron in the sample with x = 0.3. The lattice parameters of Fe- doped La0.8Sr0.2FexCo1-xO3 compounds were found to increase monotonously with increasing Fe content. The valence state of iron was found to be Fe3+.
Starting Page	521
Ending Page	526
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1007/PL00011125
Volume Number	21
Alternate Webpage(s)	https://page-one.springer.com/pdf/preview/10.1007/PL00011125
Alternate Webpage(s)	https://doi.org/10.1007/PL00011125
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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