Thermodynamic properties of La1-xAxCoO3 (A=K, Cd, Pr and Nd)

被引：6
|
作者：
Thakur, Rasna [1 ]
Gaur, N. K. [1 ]
机构：
[1] Barkatullah Univ, Dept Phys, Bhopal 462026, India
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2013年 / 201卷
关键词：
Specific heat; Thermal expansion; Bulk modulus; Cobaltate; SPIN-STATE; TRANSITIONS; STABILITY; LACOO3;
D O I：
10.1016/j.jssc.2013.02.018
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
We have calculated the thermal and allied properties of La(1-x)A(x)CoO(3) (A=K, Cd, Pr, Nd and 0 <= x <= 1) as a function of temperature 1 K <= T <= 300 K for the first time using Modified Rigid Ion Model (MRIM). The calculated bulk modulus, specific heat, thermal expansion and other thermodynamic properties obtained from MRIM have presented proper interpretation of the experimental data, for monovalent (K+), divalent(Cd2+) and trivalent (Pr3+ and Nd3+) ion-doped LaCoO3. In addition, the results on the cohesive energy (phi), molecular force constant (f), Reststrahlen frequency (D), Debye temperature (theta(D)) and Gruneisen parameter (gamma) are also discussed. (C) 2013 Elsevier Inc. All rights reserved.
引用
收藏
页码：107 / 114
页数：8
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