Magnetic transitions and magnetocaloric effect of Gd4Nd1Si2Ge2

JOURNAL OF ALLOYS AND COMPOUNDS

卷:826

Article

Kou, Ronghui¹  Gao, Jianrong¹  Nie, Zhihua²  Wang, Yandong³  Brown, Dennis E.⁴  Ren, Yang⁵ 

[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Peoples R China

[2] Beijing Inst Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China

[3] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[4] Northern Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

[5] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

关键词: Rare earth compound;    Crystal structure;    X-ray diffraction;    Magnetostriction;    Magnetocaloric effect;   

DOI  :  10.1016/j.jallcom.2020.154117

来源: Elsevier

【 摘 要 】

Crystal structure and magnetic properties of the quaternary Gd4Nd1Si2Ge2 compound were investigated using synchrotron X-ray diffraction and magnetic measurements. The compound crystallized into an orthorhombic structure in the temperature range 200-300 K. In zero field cooling, the compound undergoes a spin reorientation following a ferromagnetic-like transition at 276 K. The spin reorientation is hinted at by nonlinear changes of lattice parameters but is suppressed in a high magnetic field of 6 T. Magnetic measurements revealed a magnetocaloric effect with a high relative cooling power. It is suggested that Nd substitution for Gd enlarges magnetic anisotropy and induces a canted spin structure. (C) 2020 Elsevier B.V. All rights reserved.

【 授权许可】

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