Temperature dependence of non-Debye disorder in doped manganites


Autoria(s): Meneghini, C; Cimino, R; Pascarelli, S; Mobilio, S; Raghu, C; Sarma, DD
Data(s)

15/08/1997

Resumo

Ca-doped manganite La1-xCaxMnO3 samples with x=0.2 and 0.4 were investigated by extended x-ray absorption fine structure (EXAFS) as a function of temperature and preparation method. The samples exhibit characteristic resistivity change across the metal-insulator (MI) transition temperature whose shape and position depend on Ca-doping concentration and sample thermal treatment. EXAFS results evidenced an increase of nonthermal disorder at the MI transition temperature which is significantly correlated with the resistivity behavior.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/38528/1/Temperature_dependence_of_non.pdf

Meneghini, C and Cimino, R and Pascarelli, S and Mobilio, S and Raghu, C and Sarma, DD (1997) Temperature dependence of non-Debye disorder in doped manganites. In: Physical Review B: Condensed Matter, 56 (7). pp. 3520-3523.

Publicador

The American Physical Society

Relação

http://prb.aps.org/abstract/PRB/v56/i7/p3520_1

http://eprints.iisc.ernet.in/38528/

Palavras-Chave #Solid State & Structural Chemistry Unit
Tipo

Journal Article

PeerReviewed