Effect of the Frequency of a Cyclic Magnetic Field on the Adiabatic Temperature Change in Manganite Pr0.7Sr0.2Ca0.1MnO3

被引：0
作者：
Gamzatov, A. G. [1 ]
Kadirbardeev, A. T. [1 ]
Batdalov, A. B. [1 ]
Aliev, A. M. [1 ]
Thanh, T. D. [2 ]
Linh, D. C. [2 ]
Chinh, N. T. V. [2 ]
机构：
[1] Russian Acad Sci, Amirkhanov Inst Phys, Dagestan Fed Res Ctr, Makhachkala 367003, Russia
[2] Vietnam Acad Sci & Technol, Inst Mat Sci, Hanoi 10000, Vietnam
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2024年 / 125卷 / 14期
基金：
俄罗斯科学基金会;
关键词：
magnetocaloric effect; manganites; cyclic magnetic field; MAGNETOCALORIC PROPERTIES; MAGNETORESISTANCE; SIZE;
D O I：
10.1134/S0031918X24602427
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effect of microstructure and the frequency of change in an alternating magnetic field on the adiabatic temperature change Delta T-ad in manganite Pr0.7Sr0.2Ca0.1MnO3 has been studied. It has been shown that the transformation of specimens from a denser to looser microstructure leads to both a decrease in Delta T-ad and a stronger frequency dependence of the adiabatic temperature change. For the specimen with an annealing temperature of 1300 degrees C, Delta T-ad is 0.6 K at a frequency of 1 Hz in a field of 1.2 T to decrease to 0.3 K at 20 Hz (by more than 50%). For the specimen with an annealing temperature of 600 degrees C, Delta T-ad is 0.45 and 0.06 K at frequencies of 1 and 20 Hz, respectively (i.e., decreases by more than 80%).
引用
收藏
页码：1855 / 1859
页数：5
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