Magnetic Entropy Change and Lattice Potential Energy in Perovskite Manganites La0.6Pr0.1Ba0.3MnO3

被引：2
作者：
Wang, Zhiming [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Inst Mech Engn, 200 Xiaolingwei St, Nanjing 210094, Peoples R China
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2023年 / 36卷 / 02期
基金：
国家重点研发计划;
关键词：
Perovskite manganite; Magnetic entropy change; Lattice potential energy; GIANT MAGNETORESISTANCE; TEMPERATURE; RESISTIVITY; TRANSPORT; HEAT; CA; SR; PB;
D O I：
10.1007/s10948-022-06477-1
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Prepared by sol-gel technique, the perovskite manganites La0.6Pr0.1Ba0.3MnO3, magnetic entropy change was investigated because of the particular double metal-insulator transition peaks contrast to other similar series perovskite manganites; the maximum magnetic entropy change delta S-H = -1.42 J / kg.K and its refrigerant capacity 43 J/kg were obtained under 1-T magnetic field variation. The desired magnetic entropy change broaden peak behavior had not occurred. The relation of magnetic entropy change and lattice potential energy qualitatively is analyzed with a tabular comparison, and the possibility of the negligible Pr(3+ )ionic (Nd3+ ionic in other similar Perovskite manganites) lattice potential energy submerged in the double exchange strong magnetic signal matrix, which this phase transition is a first-order phase transition.
引用
收藏
页码：513 / 519
页数：7
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