Slight Co-doping tuned magnetic and electric properties on cubic BaFeO3 single crystal

doi:10.1088/1674-1056/ac7549

中国物理B ›› 2022, Vol. 31 ›› Issue (9): 97503-097503.doi: 10.1088/1674-1056/ac7549

Slight Co-doping tuned magnetic and electric properties on cubic BaFeO₃ single crystal

Shijun Qin(覃湜俊)^1,2, Bowen Zhou(周博文)^1,2, Zhehong Liu(刘哲宏)^1,2, Xubin Ye(叶旭斌)^1,2, Xueqiang Zhang(张雪强)¹, Zhao Pan(潘昭)^1,2, and Youwen Long(龙有文)^1,2,3,†

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China

收稿日期:2022-05-05 修回日期:2022-05-27 接受日期:2022-06-02 出版日期:2022-08-19 发布日期:2022-09-06
通讯作者: Youwen Long E-mail:ywlong@iphy.ac.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11934017 and 11921004), the National Key Research and Development Program of China (Grant Nos. 2021YFA1400300, 2018YFE0103200, and 2018YFA0305700), the Beijing Natural Science Foundation (Grant No. Z200007), and the Fund from the Chinese Academy of Sciences (Grant No. XDB33000000).

Slight Co-doping tuned magnetic and electric properties on cubic BaFeO₃ single crystal

Shijun Qin(覃湜俊)^1,2, Bowen Zhou(周博文)^1,2, Zhehong Liu(刘哲宏)^1,2, Xubin Ye(叶旭斌)^1,2, Xueqiang Zhang(张雪强)¹, Zhao Pan(潘昭)^1,2, and Youwen Long(龙有文)^1,2,3,†

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China

Received:2022-05-05 Revised:2022-05-27 Accepted:2022-06-02 Online:2022-08-19 Published:2022-09-06
Contact: Youwen Long E-mail:ywlong@iphy.ac.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11934017 and 11921004), the National Key Research and Development Program of China (Grant Nos. 2021YFA1400300, 2018YFE0103200, and 2018YFA0305700), the Beijing Natural Science Foundation (Grant No. Z200007), and the Fund from the Chinese Academy of Sciences (Grant No. XDB33000000).

摘要/Abstract

摘要： The single crystal of cubic perovskite BaFeO$_{3}$ shows multiple magnetic transitions and external stimulus sensitive magnetism. In this paper, a 5%-Co-doped BaFeO$_{3}$ (i.e. BaFe$_{0.95}$Co$_{0.05}$O$_{3})$ single crystal was grown by combining floating zone methods with high-pressure techniques. Such a slight Co doping has little effect on crystal structure, but significantly changes the magnetism from the parent antiferromagnetic ground state to a ferromagnetic one with the Curie temperature $T_{\rm C} \approx 120$ K. Compared with the parent BaFeO$_{3}$ at the induced ferromagnetic state, the saturated magnetic moment of the doped BaFe$_{0.95}$Co$_{0.05}$O$_{3}$ increases by about 10% and reaches 3.64 $\mu_{\rm B}$/f.u. Resistivity and specific heat measurements show that the ferromagnetic ordering favors metallic-like electrical transport behavior for BaFe$_{0.95}$Co$_{0.05}$O$_{3}$. The present work indicates that Co-doping is an effective method to tune the magnetic and electric properties for the cubic perovskite phase of BaFeO$_{3}$.

关键词: floating-zone single crystal, high-pressure synthesis, chemical doping, magnetic and electrical properties

Abstract: The single crystal of cubic perovskite BaFeO$_{3}$ shows multiple magnetic transitions and external stimulus sensitive magnetism. In this paper, a 5%-Co-doped BaFeO$_{3}$ (i.e. BaFe$_{0.95}$Co$_{0.05}$O$_{3})$ single crystal was grown by combining floating zone methods with high-pressure techniques. Such a slight Co doping has little effect on crystal structure, but significantly changes the magnetism from the parent antiferromagnetic ground state to a ferromagnetic one with the Curie temperature $T_{\rm C} \approx 120$ K. Compared with the parent BaFeO$_{3}$ at the induced ferromagnetic state, the saturated magnetic moment of the doped BaFe$_{0.95}$Co$_{0.05}$O$_{3}$ increases by about 10% and reaches 3.64 $\mu_{\rm B}$/f.u. Resistivity and specific heat measurements show that the ferromagnetic ordering favors metallic-like electrical transport behavior for BaFe$_{0.95}$Co$_{0.05}$O$_{3}$. The present work indicates that Co-doping is an effective method to tune the magnetic and electric properties for the cubic perovskite phase of BaFeO$_{3}$.

Key words: floating-zone single crystal, high-pressure synthesis, chemical doping, magnetic and electrical properties

中图分类号: (Exchange and superexchange interactions)

75.30.Et

75.10.Lp (Band and itinerant models) 81.10.Fq (Growth from melts; zone melting and refining) 81.40.Vw (Pressure treatment)

Shijun Qin(覃湜俊), Bowen Zhou(周博文), Zhehong Liu(刘哲宏), Xubin Ye(叶旭斌), Xueqiang Zhang(张雪强), Zhao Pan(潘昭), and Youwen Long(龙有文). Slight Co-doping tuned magnetic and electric properties on cubic BaFeO₃ single crystal[J]. 中国物理B, 2022, 31(9): 97503-097503.

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Slight Co-doping tuned magnetic and electric properties on cubic BaFeO₃ single crystal

Slight Co-doping tuned magnetic and electric properties on cubic BaFeO₃ single crystal

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