Local surrounding of Mn in LaMn.sub.1-x./sub.Co.sub.x./sub.O.sub.3./sub. compounds by means of EXAFS on Mn-K

0352735 - FZÚ 2011 RIV NL eng J - Článek v odborném periodiku
Procházka, V. - Sikora, M. - Kapusta, Cz. - Štěpánková, H. - Chlan, V. - Knížek, Karel - Jirák, Zdeněk
Local surrounding of Mn in LaMn_1-xCo_xO₃ compounds by means of EXAFS on Mn-K.
Journal of Magnetism and Magnetic Materials. Roč. 322, 9-12 (2010), s. 1198-1200. ISSN 0304-8853. E-ISSN 1873-4766.
[Joint European Magnetic Symposia (JEMS 08) /4./. Dublin, 14.09.2008-19.09.2008]
Grant CEP: GA ČR GA202/06/0051
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: manganite * cobaltite * perovskite * EXAFS * FEFF
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.689, rok: 2010

A systematic study of LaMn1-xCoxO3 perovskite series by means of X-ray absorption spectroscopy in the extended X-ray absorption fine structure (EXAFS) range of the K-absorption edge of Mn is reported. The Mn-K edge absorption measurements in the EXAFS region were performed to study the local surrounding of Mn ions. Polycrystalline powder samples of LaMn1-xCoxO3 (x=0, 0.02; 0.2; 0.4; 0.5; 0.6; 0.8) prepared by solid-state reaction were used. The EXAFS spectra were analyzed with the FEFF8 computer program. The Mn-O distances of Mn to the nearest oxygen surroundings were evaluated for the samples in the series and compared with the Co-O distances obtained by EXAFS in V. Procházka et al., JMMM 310 (2007) 197 and with results of X-ray powder diffraction in C. Autret, J. Phys. Condens. Matter 17 (2005) 1601.
Trvalý link: http://hdl.handle.net/11104/0192179