Tunable structural and magnetic properties of NiAs-type MnxSb (1.00≤x≤1.30) compounds

JOURNAL OF ALLOYS AND COMPOUNDS

卷:856

Article

Liang, D.^1,2  Yang, Y. B.^1,2  Yang, W. Y.^1,2  Zhu, C. Y.³  Zhu, J. L.⁴  Xu, H.⁵  Vogel, S. C.⁵  Gourdon, O.⁵  Zou, R. Q.⁶  Tian, G.^1,2  Wang, C. S.^1,2  Du, H. L.^1,2  Yang, J. B.^1,2,7 

[1] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Peking Univ, Sch Phys, Inst Condensed Matter & Mat Phys, Beijing 100871, Peoples R China

[3] Peking Univ, Coll Engn, Robot Res Grp, Beijing 100871, Peoples R China

[4] Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

[5] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[6] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

[7] Beijing Key Lab Magnetoelect Mat & Devices, Beijing 100871, Peoples R China

关键词: Magnetic properties;    Neutron diffraction;    Magnetic structure;    Spin reorientation;    Magnetocaloric effect;   

DOI  :  10.1016/j.jallcom.2020.158184

来源: Elsevier

【 摘 要 】

Mn-based alloys can exhibit a variety of magnetic properties related to their tunable exchange interactions. In this work, structural and magnetic properties of hexagonal NiAs-type MnxSb (1.00 <= x <= 1.30) compounds are studied with a combination of X-ray diffraction, neutron diffraction, and magnetic measurements. It is found that the magnetization, Curie temperature, and magnetocrystalline anisotropy of MnxSb compounds can be tuned by controlling Mn concentration and doping at interstitial (2d) sites. With increasing Mn concentration, magnetic moments of Mn atoms decrease and deviate gradually from the ab-plane to the c-axis for 1.20 <= x <= 1.22 at room temperature, which leads to a decrease of the Curie temperature T-c and the spin reorientation temperature T-SR. By doping with nonmagnetic elements, a substantial room-temperature magnetocaloric effect without magnetic hysteresis was achieved for Mn1.12Zr0.1Sb compound, which is highly beneficial to the practical magnetic refrigeration application. (C) 2020 Elsevier B.V. All rights reserved.

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