- Physical Review Journals
All JournalsPhysics Magazine

Physical Review Materials

Export citation

Export citation

Choose format for download:

Download Citation
  • Letter

Robust spin glass state with exceptional thermal stability in a chemically complex alloy

Jihao Yu1,2, Weiwei Wu1,2, Huaping Zhang1, Ruiwen Shao3, Fan Zhang4, Hong Wang1,2, Zian Li5,*, Junhua Luan6, Zengbao Jiao7 et al.

Chain Tsuan Liu6, Baoan Sun1,2,8,†, Haiyang Bai1,2,8,‡, and Weihua Wang1,2,8

  • 1Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 2Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 3Beijing Advanced Innovation Center for Intelligent Robots and Systems, Institute of Engineering Medicine, Beijing Institute of Technology, Beijing 100081, China
  • 4School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  • 5School of Physical Science and Technology, Guangxi University, Nanning 530004, China
  • 6Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong, China
  • 7Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
  • 8Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China

  • *zianli@gxu.edu.cn
  • †sunba@iphy.ac.cn
  • ‡hybai@iphy.ac.cn
PDF

Phys. Rev. Materials 6, L091401 – Published 1 September, 2022

DOI: https://doi.org/10.1103/PhysRevMaterials.6.L091401

Abstract

Spin glasses (SGs) arise from the frustration of competing magnetic interactions without long-range order; hence they tend to be destabilized by thermal fluctuation and exhibit a rather low glass transition temperature, presenting a major challenge for SG research and applications. Here, we report an unusual SG state in quaternary Fe-Co-Ni-Mn chemically complex alloys (CCAs). The SG exhibits an ultrahigh freezing temperature above room temperature, well exceeding that of conventional bulk SGs, as well as a unique and fast relaxation dynamics. The thermally stable SG state can be attributed to the strong frustration of exchange interactions owing to the high concentration of magnetic atoms and their chemical randomness in the solid-solution lattice. In addition, owing to the high phase stability of CCAs, the SG is robust over a wide compositional range, enabling a variety of magnetic phase transitions and largely tunable glass properties. These properties make CCAs important for understanding the nature of the SG state and intriguing for practical applications of SGs in spintronics.

View figure in article

Physics Subject Headings (PhySH)

Authorization Required

We need you to provide your credentials before accessing this content.

Other Options

Supplemental Material (Subscription Required)

References (Subscription Required)

Outline

Information

Phys. Rev. Materials 6, L091401– Published 1 September, 2022
  • Received 4 January 2022
  • Revised 29 July 2022
  • Accepted 22 August 2022
Crossmark - Check for updates button

©2022 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation