Transition from antiferromagnetic ground state to robust ferrimagnetic order with Curie temperatures above 420 K in manganese-based antiperovskite-type structures

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xinghong Zhang
  • Quan Yuan
  • Tangling Gao
  • Hui Wu
  • Qingzhen Huang
  • Jinggeng Zhao
  • Xianjie Wang
  • Ye Yuan
  • Chi Xu
  • Yongfeng Hu
  • James J. Dynes
  • Jigang Zhou
  • Shengqiang Zhou
  • Yu Liu
  • Bo Song

Detail(s)

Original languageEnglish
Pages (from-to)13336-13344
Journal / PublicationJournal of Materials Chemistry C
Volume6
Issue number48
Publication statusPublished - 2018
Externally publishedYes

Abstract

Manganese (Mn)-based antiperovskite structures (Mn 3 AX, where A and X represent the 3d transition-metal elements and N or C atoms, respectively) have attracted growing attention because of their novel electronic and magnetic properties. However, the lack of an effective approach to regulate the magnetic coupling in Mn 3 AX crystal structure, particularly in antiferromagnetic ground states, hinders their further design and applications. Herein, robust high-temperature ferrimagnetic order with a Curie temperature (T C ) in the range of ∼390-420 K was successfully achieved in Mn 3 Ga x N x (x = 0.5, 0.6, and 0.7) via composition-deficient engineering. A systematic investigation, including synchrotron X-ray diffraction, neutron powder diffraction, pair distribution function, X-ray absorption near-edge structure, magnetic characterization, and first-principles calculations, convincingly indicated that the redistribution of partial atoms in the antiferromagnetic ground state was responsible for the observed long-range magnetic order. These results not only provide a new perspective into the design and construction of high-temperature ferrimagnets based on the Mn 3 AX structure, but also open up a promising avenue for the further design of Mn 3 AX-based spintronic or other multifunctional devices.

Bibliographic Note

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Citation Format(s)

Transition from antiferromagnetic ground state to robust ferrimagnetic order with Curie temperatures above 420 K in manganese-based antiperovskite-type structures. / Zhang, Xinghong; Yuan, Quan; Gao, Tangling; Ren, Yang; Wu, Hui; Huang, Qingzhen; Zhao, Jinggeng; Wang, Xianjie; Yuan, Ye; Xu, Chi; Hu, Yongfeng; Dynes, James J.; Zhou, Jigang; Zhou, Shengqiang; Liu, Yu; Song, Bo.

In: Journal of Materials Chemistry C, Vol. 6, No. 48, 2018, p. 13336-13344.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review