The heat capacity and thermodynamic functions of ternary manganites DyMIMgMn2O6 (MI-Na, K, Cs) in the temperature range from 223 to 673 K

被引：1

作者：

Kasenov, BK ^{[1
]}

Akisheva, ZN ^{[1
]}

Mustafin, ES ^{[1
]}

Kasenova, SB ^{[1
]}

Sagintaeva, ZI ^{[1
]}

Bekturganov, ZS ^{[1
]}

Akubaeva, MA ^{[1
]}

机构：

[1] Minist Educ & Sci Republ Kazakhstan, Inst Phytochem, Karaganda 470032, Kazakhstan

来源：

HIGH TEMPERATURE | 2005年 / 43卷 / 05期

关键词：

Physical Chemistry; Phase Transition; Heat Capacity; Plasma Physics; Manganite;

D O I：

10.1007/s10740-005-0117-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The solid-phase method is used to synthesize ternary manganites of composition (DyMMgMn2O6)-Mg-I (M-I-Na, K, Cs); their X-ray investigation is performed to demonstrate that they all crystallize in orthorhombic system. Their heat capacity is determined experimentally in the range from 223 to 673 K, equations are derived which describe the dependences C-p(o) similar to f(T), and the thermodynamic functions C-p(o)(T), H-o(T)-H-o(298.15), S-o(T), and Phi**(T) are calculated. Second-order phase transitions are observed in the process of investigation of heat capacity.

引用

页码：727 / 732

页数：6