Physical Properties of Half-Heusler Antiferromagnet MnPtSn Single Crystal

Wang, Qi; Du, Qianheng; Petrovic, Cedomir; Lei, Hechang

doi:10.1088/0256-307X/37/2/027502

Title: Physical Properties of Half-Heusler Antiferromagnet MnPtSn Single Crystal

Journal Article · 31 January 2020 · Chinese Physics Letters

DOI: https://doi.org/10.1088/0256-307X/37/2/027502 · OSTI ID:1604320

Wang, Qi ^[1]; Du, Qianheng ^[2];

^[2]; Lei, Hechang ^[1]

Renmin Univ. of China, Beijing (China)
Brookhaven National Lab. (BNL), Upton, NY (United States)

Herein we report the growth of ternary half-Heusler MnPtSn single crystals and detailed study on its structural and physical properties. MnPtSn single crystal has a larger lattice parameter than that in polycrystal and it exhibits antiferromagnetism with transition temperature T _N at about 215 K, distinctly different from the ferromagnetism of MnPtSn polycrystal. Hall resistivity measurement indicates that the dominant carriers are hole-type and the nearly temperature-independent carrier concentration reaches about 2.86 × 10²² cm^–3 at 5 K. Moreover, the carrier mobility is also rather low (4.7 cm²·V^–1s^–1 at 5 K). The above results strongly suggest that the significant Mn/Sn anti-site defects, i.e., the content of Mn in MnPtSn single crystal, play a vital role on structural, magnetic and transport properties

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: Fundamental Research Funds for the Central Universities; National Key R&D Program of China; National Natural Science Foundation of China (NSFC); Research Funds of Renmin University of China (RUC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: SC0012704

OSTI ID:: 1604320

Report Number(s):: BNL--213710-2020-JAAM

Journal Information:: Chinese Physics Letters, Journal Name: Chinese Physics Letters Journal Issue: 2 Vol. 37; ISSN 0256-307X

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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