Magnetic Evolution of Carrier Doping and Spin Dynamics in Diluted Magnetic Semiconductors (Ba,Na)(Zn,Mn)2As2
The investigation of novel diluted magnetic semiconductors (DMSs) provides a promising platform for studying magnetism and transport characteristics, with significant implications for spintronics. DMSs based on BaZn2As2 are particularly noteworthy due to their high Curie temperature (TC) of 260 K, diverse magnetic states, and potential for multilayer heterojunctions. This study investigates the magnetic evolution of carrier doping and spin dynamics in the asperomagnet (Ba,Na)(Zn,Mn)2As2, utilizing a combination of magnetization measurements, ac susceptibility, and muon spin rotation (µSR). Key findings include the following: (1) lower transition temperatures and coercive forces in (Ba,Na)(Zn,Mn)2As2 compared to the ferromagnet (Ba,K)(Zn,Mn)2As2; (2) a dynamic fluctuation peak around the transition temperature observed in both the ac susceptibility and longitudinal field (LF) µSR; and (3) the coexistence of static and dynamic states at low temperatures, exhibiting spin-glass-like characteristics. This study, to the best of our knowledge, may represent the first investigation of asperomagnetic order utilizing µSR techniques. It enhances the understanding of magnetic interactions in BaZn2As2-based systems and provides valuable insights into the exploration of high TC DMSs.
Authors
- Kenji Kojima (ORCID: https://orcid.org/0000-0001-9273-181X)
- Timothy A. L. Ziman (ORCID: https://orcid.org/0000-0001-9580-2185)
- Kan Zhao (ORCID: https://orcid.org/0000-0002-7973-7261)
- Gang Su (ORCID: https://orcid.org/0000-0002-8149-4342)
- Zheng Deng (ORCID: https://orcid.org/0000-0003-3921-1721)
- Yasutomo J. Uemura (ORCID: https://orcid.org/0000-0002-2331-7081)
- Guoqiang Zhao (ORCID: https://orcid.org/0000-0003-1545-119X)
- Yipeng Cai (ORCID: https://orcid.org/0000-0002-1374-5314)
- Bo Gu (ORCID: https://orcid.org/0000-0003-2211-4116)
- G. M. Luke (ORCID: https://orcid.org/0000-0003-4762-1173)
- Qi Sheng
- J. Beare (ORCID: https://orcid.org/0000-0003-3948-5087)
- Sadamichi Maekawa (ORCID: https://orcid.org/0000-0002-4237-7741)
- Xiang Li (ORCID: https://orcid.org/0000-0002-2245-4471)
- Yongqing Li (ORCID: https://orcid.org/0000-0001-6953-0147)
- Xiancheng Wang (ORCID: https://orcid.org/0000-0001-6263-4963)
- Yi Peng (ORCID: https://orcid.org/0000-0003-2315-6561)
- Changqing Jin
Institutions
- Japan Atomic Energy Agency (JP)
- TRIUMF (CA)
- Chinese Academy of Sciences (CN)
- Kavli Institute for Theoretical Sciences (CN)
- Institute of Theoretical Physics (CN)
- RIKEN Center for Emergent Matter Science (JP)
- Advanced Science Research Center (JP)
- Institute of Physics (CN)
- University of Chinese Academy of Sciences (CN)
- Columbia University (US)
- McMaster University (CA)
Publication Details
- Journal
- Condensed Matter
- Published
- 2025-05-15
- DOI
- https://doi.org/10.3390/condmat10020030
- Citations
- 5
- Primary Topic
- Rare-earth and actinide compounds
- Type
- article
- Field-Weighted Citation Impact
- 6.29
Funders
- National Science Foundation
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- China Scholarship Council
- University of Chinese Academy of Sciences
- Japan Society for the Promotion of Science
- Division of Materials Research