We report extended X-ray absorption fine structure measurements at the Mn K edge on La0.25Ca0.75Mn0.92Cr0.08O3 samples. Macroscopically, the Mn substitution induces a shortrange charge-ordered state in spite of the long-range one present in the parent manganite La0.25Ca0.75MnO3. We show how on a local scale the structural EXAFS parameters still confirm the presence, with only a slight reduction, of the features characteristic of the charge ordered un-substituted compounds.
Local order and structure in Mn substituted manganites studied by EXAFS / C. Castellano, F. Cordero, O. Palumbo, R. Cantelli, A. Martinelli, M. Ferretti. - In: JOURNAL OF SUPERCONDUCTIVITY. - ISSN 0896-1107. - 18:5-6(2005), pp. 643-647.
Local order and structure in Mn substituted manganites studied by EXAFS
C. CastellanoPrimo
;
2005
Abstract
We report extended X-ray absorption fine structure measurements at the Mn K edge on La0.25Ca0.75Mn0.92Cr0.08O3 samples. Macroscopically, the Mn substitution induces a shortrange charge-ordered state in spite of the long-range one present in the parent manganite La0.25Ca0.75MnO3. We show how on a local scale the structural EXAFS parameters still confirm the presence, with only a slight reduction, of the features characteristic of the charge ordered un-substituted compounds.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
