Magnetocaloric and magneto-transport properties of Gd10CO20Si70 alloy

被引：7

作者：

Rashid, T. P. ^{[1
]}

Arun, K. ^{[1
]}

Curlik, Ivan ^{[2
]}

Ilkovic, Sergej ^{[2
]}

Reiffers, Marian ^{[2
]}

Dzubinska, Andrea ^{[3
]}

Nagalakshmi, R. ^{[1
]}

机构：

[1] Natl Inst Technol, Intemetall & Nonlinear Opt Lab, Dept Phys, Tiruchirappalli 6200015, Tamil Nadu, India

[2] Presov Univ, Fac Humanities & Nat Sci, Presov, Slovakia

[3] Safarik Univ, Fac Nat Sci, Kosice 04001, Slovakia

来源：

JOURNAL OF RARE EARTHS | 2019年 / 37卷 / 01期

关键词：

Rare earth-transition metal alloy; Magnetic properties; Magnetocaloric effect; Magnetoresistance; Spin fluctuations; LARGE POSITIVE MAGNETORESISTANCE;

D O I：

10.1016/j.jre.2018.05.024

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

We report the results of magnetic, thermodynamic, transport and magnetocaloric effect (MCE) studies of newly synthesized Gd10CO20Si70 alloy. These measurements confirm an antiferromagnetic transition at T-N = 9 K. Both MCE and magnetoresistance (MR) show quadratic dependence on the applied magnetic field, indicating the presence of spin fluctuations in the alloy. The maximum values of the magnetic entropy change determined from the isothermal magnetization data for magnetic field change of 7 and 9 T are found to be 10.5 and 15.6 J/kg . K, respectively. As a consequence of the spin fluctuations effect, the MCE peaks are pulled towards high temperature side as asymmetrically broadened peak. The MR attains a large positive value of 73% at 2 K in 8 T. The large MR and reversible MCE make this alloy an attractive multifunctional magnetic material. (C) 2019 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.

引用

页码：74 / 79

页数：6

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