Thermal Expansion and Specific Heat of Pr0.8Na0.2MnO3 and Tb0.85Na0.15MnO3 Perovskite Manganites

被引：0
|
作者：
Srivastava, Archana [1 ]
Thakur, Rasna [2 ]
Gaur, N. K. [2 ]
机构：
[1] Sri Sathya Sai Coll Women, Dept Phys, Bhopal 462024, India
[2] Barkatullah Univ, Dept Phys, Bhopal 462026, India
来源：
PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS & MATERIAL SCIENCE (RAM 2013) | 2013年 / 1536卷
关键词：
Thermal Expansion; Specific Heat; Thermal properties; Colossal Magnetoresistance Materials;
D O I：
10.1063/1.4810527
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Specific heat (C-p), thermal expansion (alpha) and bulk modulus of sodium doped Rare Earth manganites R1-xNaxMnO3 (R3+= La, Pr, Tb) has been studied by means of a Modified Rigid Ion Model (MRIM) and AIM theory. The partial replacement of rare earth cation by sodium introduces large size and charge mismatch at A-site affecting the bulk modulus and thermal properties. Lattice specific heat (C-p) of Pr0.8Na0.2MnO3 as a function of temperature (1K <= T <= 350K) is found to be in agreement with the published data. The trend of variation of Debye temperature with A-site cationic radius is predicted probably for the first time for the doped rare earth manganites.
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页码：915 / +
页数：2
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