Heat capacity and magnetocaloric properties of La1-x K x MnO3 manganites

被引：19

作者：

Kamilov, I. K. ^{[1
]}

Gamzatov, A. G. ^{[1
]}

Batdalov, A. B. ^{[1
]}

Mankevich, A. S. ^{[2
]}

Korsakov, I. E. ^{[2
]}

机构：

[1] Russian Acad Sci, Dagestan Sci Ctr, Amirkhanov Inst Phys, Makhachkala 367003, Dagestan, Russia

[2] Moscow MV Lomonosov State Univ, Moscow 119992, Russia

来源：

PHYSICS OF THE SOLID STATE | 2010年 / 52卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

Heat Capacity; Manganite; Magnetocaloric Effect; Crystal Lattice Parameter; Relative Cool Power;

D O I：

10.1134/S1063783410040190

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetocaloric effect and the heat capacity of La1 - x K (x) MnO3 (x = 0.1, 0.15, 0.175) ceramic samples have been studied at temperatures in the range 77-350 K and in magnetic fields of up to 27 kOe. The technique for preparing the samples has been described. The heat capacity anomalies related to the ferromagnetic-paramagnetic magnetic phase transition have been revealed and interpreted. It has been demonstrated that the change in the magnetic entropy Delta S calculated from the data on the heat capacity C (p) and direct measurements of the magnetocaloric effect Delta T reaches values that are of practical interest.

引用

页码：789 / 793

页数：5

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