Specific Heat of CoFe2O4 and the 0.3CoFe2O4-0.7PbTiO3 Composite

被引：0

作者：

Mitarov, R. G. ^{[1
]}

Kallaev, S. N. ^{[2
]}

Omarov, Z. M. ^{[2
]}

Abdulvakhidov, K. G. ^{[3
]}

机构：

[1] Dagestan State Tech Univ, Makhachkala, Russia

[2] Russian Acad Sci, Dagestan Fed Res Ctr, Amirkhanov Inst Phys, Makhachkala, Russia

[3] Southern Fed Univ, Rostov Na Donu, Russia

来源：

PHYSICS OF THE SOLID STATE | 2022年 / 64卷 / 10期

关键词：

specific heat; multiferroic composite; Schottky effect;

D O I：

10.1134/S1063783422110075

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The temperature dependence of the specific heat of the CoFe2O4 ferromagnet and the 0.3CoFe(2)O(4)-0.7PbTiO(3) muliferroic composite is studied in the temperature range 150-820 K. An addition of lead titanate ferroelectric to cobalt ferrite ferromagnet is found to lead to a shift of the magnetic phase transition temperature to lower temperatures by 49 K and to a decrease in the specific heat in a wide temperature range. It is noted that the additional component of the specific heat is due to transitions of cobalt or iron ions to higher energy levels and also due to a distortion of the lattice parameters as a result of formation of three coexisting phases.

引用

页码：527 / 530

页数：4

共 20 条

[1]

Abdulvakhidov B., 2022, APPL PHYS A-MATER, V128

[2] Domain structure and reorientation in CoFe2O4 [J].