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.
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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.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||22 Jun 2011 07:43|
|Last Modified:||22 Jun 2011 07:43|
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