中国物理B ›› 2024, Vol. 33 ›› Issue (9): 97101-097101.doi: 10.1088/1674-1056/ad553c

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Simultaneous control of ferromagnetism and ferroelasticity by oxygen octahedral backbone stretching

Genhao Liang(梁根豪)1,2,†, Hui Cao(曹慧)3,†, Long Cheng(成龙)2,†,‡, Junkun Zha(查君坤)1,2, Mingrui Bao(保明睿)2, Fei Ye(叶飞)2, Hua Zhou(周华)4, Aidi Zhao(赵爱迪)2, and Xiaofang Zhai(翟晓芳)2,§   

  1. 1 Department of Physics, University of Science and Technology of China, Hefei 230026, China;
    2 School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China;
    3 Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA;
    4 X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
  • 收稿日期:2024-05-24 修回日期:2024-06-04 接受日期:2024-06-07 出版日期:2024-09-15 发布日期:2024-08-15
  • 通讯作者: Long Cheng, Aidi Zhao, Xiaofang Zhai E-mail:chenglong1@shanghaitech.edu.cn;zhaixf@shanghaitech.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52072244 and 12104305), the Science and Technology Commission of Shanghai Municipality (Grant No. 21JC1405000), and the ShanghaiTech Startup Fund. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02- 06CH11357.

Simultaneous control of ferromagnetism and ferroelasticity by oxygen octahedral backbone stretching

Genhao Liang(梁根豪)1,2,†, Hui Cao(曹慧)3,†, Long Cheng(成龙)2,†,‡, Junkun Zha(查君坤)1,2, Mingrui Bao(保明睿)2, Fei Ye(叶飞)2, Hua Zhou(周华)4, Aidi Zhao(赵爱迪)2, and Xiaofang Zhai(翟晓芳)2,§   

  1. 1 Department of Physics, University of Science and Technology of China, Hefei 230026, China;
    2 School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China;
    3 Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA;
    4 X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA
  • Received:2024-05-24 Revised:2024-06-04 Accepted:2024-06-07 Online:2024-09-15 Published:2024-08-15
  • Contact: Long Cheng, Aidi Zhao, Xiaofang Zhai E-mail:chenglong1@shanghaitech.edu.cn;zhaixf@shanghaitech.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52072244 and 12104305), the Science and Technology Commission of Shanghai Municipality (Grant No. 21JC1405000), and the ShanghaiTech Startup Fund. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02- 06CH11357.

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摘要： Coexistence of ferromagnetism and ferroelasticity in a single material is an intriguing phenomenon, but has been rarely found. Here we studied both the ferromagnetism and ferroelasticity in a group of LaCoO$_{3}$ films with systematically tuned atomic structures. We found that all films exhibit ferroelastic domains with four-fold symmetry and the larger domain size (higher elasticity) is always accompanied by stronger ferromagnetism. We performed synchrotron x-ray diffraction studies to investigate the backbone structure of the CoO$_{6}$ octahedra, and found that both the ferromagnetism and the elasticity are simultaneously enhanced when the in-plane Co-O-Co bond angles are straightened. Therefore the study demonstrates the inextricable correlation between the ferromagnetism and ferroelasticity mediated through the octahedral backbone structure, which may open up new possibilities to develop multifunctional materials.

关键词: perovskite oxide film, ferromagnetism, ferroelasticity, twin domain

Abstract: Coexistence of ferromagnetism and ferroelasticity in a single material is an intriguing phenomenon, but has been rarely found. Here we studied both the ferromagnetism and ferroelasticity in a group of LaCoO$_{3}$ films with systematically tuned atomic structures. We found that all films exhibit ferroelastic domains with four-fold symmetry and the larger domain size (higher elasticity) is always accompanied by stronger ferromagnetism. We performed synchrotron x-ray diffraction studies to investigate the backbone structure of the CoO$_{6}$ octahedra, and found that both the ferromagnetism and the elasticity are simultaneously enhanced when the in-plane Co-O-Co bond angles are straightened. Therefore the study demonstrates the inextricable correlation between the ferromagnetism and ferroelasticity mediated through the octahedral backbone structure, which may open up new possibilities to develop multifunctional materials.

Key words: perovskite oxide film, ferromagnetism, ferroelasticity, twin domain

中图分类号:  (Narrow-band systems; intermediate-valence solids)

  • 71.28.+d
71.70.Ch (Crystal and ligand fields) 75.25.-j (Spin arrangements in magnetically ordered materials (including neutron And spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)) 75.47.Lx (Magnetic oxides)