Magnetic field-induced metamagnetic, magnetocaloric and pyrocurrent behaviors of Eu2CoMnO6

被引：37

作者：

Krishnamurthy, J. ^{[1
]}

Venimadhav, A. ^{[2
]}

机构：

[1] Natl Inst Technol, Sch Sci, Dept Phys, Tadepalligudem 534101, Andhra Pradesh, India

[2] Indian Inst Technol, Cryogen Engn Ctr, Kharagpur 721302, W Bengal, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 500卷

关键词：

Double perovskites; Metamagnetic; Magnetocaloric and pyrocurrent effects; TEMPERATURE;

D O I：

10.1016/j.jmmm.2019.166387

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the structural, transport, pyrocurrent and magnetic behaviors of Eu2CoMnO6 (ECMO) sample are reported. It was prepared by the solid-state reaction method and crystallized in monoclinic crystal structure with a space group of P2(1)/n. A systematic study of the temperature and magnetic field-dependent susceptibility revealed a complex magnetic behavior with field-induced type-II metamagnetic phase transition of the first-order. The multiple sharp jumps in the initial magnetization curve for T < 10 K could be attributed to structural distortion related to the martensite-like strains from E*-type antiferromagnetic to ferromagnetic ordering. The metastable magnetic behavior for T >= 60 K is ascribed to a transformation of the low-field disordered spin glass phase to long-range ordered ferromagnetic phase, induced by critical fields. These critical fields are quite sensitive to the direction and magnitude of the field-cooling process. The temperature-dependent magnetocaloric effect with maximum value of similar to 3.3 J kg(-1) K-1 at T-c similar to 123 K and the electrical transport behavior of ECMO were studied. Further, temperature dependent pyroelectric current and polarization data of ECMO are investigated.

引用

页数：6

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