Calorimetric and electrical transport properties of stoichiometric La1-xSrxMnO3 compounds

被引：10
|
作者：
Michalopoulou, A [1 ]
Syskakis, E
Papastaikoudis, C
机构：
[1] NCSR Demokritos, Inst Mat Sci, GR-15310 Athens, Greece
[2] Univ Athens, Sect Solid State Phys, GR-15784 Athens, Greece
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 45期
关键词：
D O I：
10.1088/0953-8984/15/45/015
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Heat capacity and electrical resistivity investigations are carried out for stoichiometric La1-xSrxMnO3 manganite compounds. The temperature of the peak of the heat capacity c(p) associated with ferromagnetic transition is in agreement with the resistivity measurements. The electrical resistivity shows a roughly AT 2 dependence over a wide temperature range, where the coefficient A decreases as the content of Sr increases. The results show that the Kadowaki-Woods empirical relation is not valid. It is attempted to explain the dependence of A on the x content of Sr within the framework of electron-electron Umklapp scattering.
引用
收藏
页码：7763 / 7776
页数：14
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