中国物理B ›› 2025, Vol. 34 ›› Issue (4): 47502-047502.doi: 10.1088/1674-1056/adbadc

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Influence of cooling atmosphere on the structure, magnetization, and dielectric properties of CaBaCo4O7

Gaoshang Gong(龚高尚)1,2, Minghao Wang(王明豪)1,2, Ruoshui Liu(刘若水)3, Yang Wu(吴杨)3, Lichen Wang(王利晨)3,†, Yongqiang Wang(王永强)1,2,‡, and Baogen Shen(沈保根)3   

  1. 1 School of Electronics and Information, Zhengzhou University of Light Industry, Zhengzhou 450000, China;
    2 Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450000, China;
    3 Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  • 收稿日期:2025-02-05 修回日期:2025-02-24 接受日期:2025-02-27 出版日期:2025-04-15 发布日期:2025-04-15
  • 通讯作者: Lichen Wang, Yongqiang Wang E-mail:wanglichen@nimte.ac.cn;wangyq@zzuli.edu.cn
  • 基金资助:
    Project supported by the Key Research Project of Colleges and Universities of Henan Province (Grant No. 23A140017), the Research Project of Department of Science and Technology of Henan Province (Grant No. 242102231072), the National Natural Sciences Foundation of China (Grant No. 52402336), the special fund of the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences “New magnetic materials and structural devices for 5G communication” (Grant No. E41602QB01).

Influence of cooling atmosphere on the structure, magnetization, and dielectric properties of CaBaCo4O7

Gaoshang Gong(龚高尚)1,2, Minghao Wang(王明豪)1,2, Ruoshui Liu(刘若水)3, Yang Wu(吴杨)3, Lichen Wang(王利晨)3,†, Yongqiang Wang(王永强)1,2,‡, and Baogen Shen(沈保根)3   

  1. 1 School of Electronics and Information, Zhengzhou University of Light Industry, Zhengzhou 450000, China;
    2 Henan Key Laboratory of Magnetoelectronic Information Functional Materials, Zhengzhou University of Light Industry, Zhengzhou 450000, China;
    3 Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China
  • Received:2025-02-05 Revised:2025-02-24 Accepted:2025-02-27 Online:2025-04-15 Published:2025-04-15
  • Contact: Lichen Wang, Yongqiang Wang E-mail:wanglichen@nimte.ac.cn;wangyq@zzuli.edu.cn
  • Supported by:
    Project supported by the Key Research Project of Colleges and Universities of Henan Province (Grant No. 23A140017), the Research Project of Department of Science and Technology of Henan Province (Grant No. 242102231072), the National Natural Sciences Foundation of China (Grant No. 52402336), the special fund of the Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences “New magnetic materials and structural devices for 5G communication” (Grant No. E41602QB01).

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摘要： CaBaCo$_{4}$O$_{7}$ has been widely studied because of its distinctive structure and magnetic properties. This study examined the influence of different cooling atmospheres on the structure, magnetic properties, and dielectric behavior of CaBaCo$_{4}$O$_{7}$. Samples were cooled under different atmospheric conditions to assess these influences. Our findings indicate that reduced oxygen content leads to increased lattice distortion. Since oxygen atoms play a crucial role in mediating magnetic exchange, oxygen deficiency disrupts long-range magnetic order and promotes short-range antiferromagnetic interactions. Additionally, the cooling atmosphere significantly impacts grain size, thereby affecting the dielectric constant and dielectric loss. In the argon-cooled CaBaCo$_{4}$O$_{7}$ (Ar) sample, oxygen deficiency reduced dielectric permittivity and increased dielectric loss.

关键词: CaBaCo$_{4}$O$_{7}$, cooling atmosphere, magnetization, dielectric

Abstract: CaBaCo$_{4}$O$_{7}$ has been widely studied because of its distinctive structure and magnetic properties. This study examined the influence of different cooling atmospheres on the structure, magnetic properties, and dielectric behavior of CaBaCo$_{4}$O$_{7}$. Samples were cooled under different atmospheric conditions to assess these influences. Our findings indicate that reduced oxygen content leads to increased lattice distortion. Since oxygen atoms play a crucial role in mediating magnetic exchange, oxygen deficiency disrupts long-range magnetic order and promotes short-range antiferromagnetic interactions. Additionally, the cooling atmosphere significantly impacts grain size, thereby affecting the dielectric constant and dielectric loss. In the argon-cooled CaBaCo$_{4}$O$_{7}$ (Ar) sample, oxygen deficiency reduced dielectric permittivity and increased dielectric loss.

Key words: CaBaCo$_{4}$O$_{7}$, cooling atmosphere, magnetization, dielectric

中图分类号:  (Magnetoelectric effects, multiferroics)

  • 75.85.+t
77.80.-e (Ferroelectricity and antiferroelectricity) 77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)