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.

引用

页码：915 / +

页数：2