中国物理B ›› 2020, Vol. 29 ›› Issue (8): 87501-087501.doi: 10.1088/1674-1056/ab9736

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇    下一篇

Enhanced ferromagnetism and magnetoelectric response in quenched BiFeO3-based ceramics

Qi Pan(潘祺), Bao-Jin Chu(初宝进)   

  1. Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences(CAS), Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • 收稿日期:2020-03-28 修回日期:2020-05-24 出版日期:2020-08-05 发布日期:2020-08-05
  • 通讯作者: Bao-Jin Chu E-mail:chubj@ustc.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51672261 and 51373161) and the National Key Research and Development Program of China (Grant No. 2017YFA0701301).

Enhanced ferromagnetism and magnetoelectric response in quenched BiFeO3-based ceramics

Qi Pan(潘祺), Bao-Jin Chu(初宝进)   

  1. Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences(CAS), Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
  • Received:2020-03-28 Revised:2020-05-24 Online:2020-08-05 Published:2020-08-05
  • Contact: Bao-Jin Chu E-mail:chubj@ustc.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51672261 and 51373161) and the National Key Research and Development Program of China (Grant No. 2017YFA0701301).

摘要: The piezoelectric, ferromagnetism, and magnetoelectric response of BiFeO3-BaTiO3 ceramics with the compositions around the morphotropic phase boundary (MPB) of the solid solution are systematically investigated after the ceramics have been quenched from a high temperature. We find that the ferromagnetism of the quenched ceramics is greatly enhanced. An enhanced piezoelectric response d33 larger than 200 pC/N, which could be sustained up to 350℃, is measured. As a result of enhanced ferromagnetism and piezoelectric response, a large magnetoelectric response ~1.3 V/cm·Oe (1 Oe=79.5775 A·m-1) is obtained near the mechanical resonance frequency of the quenched ceramic samples. Our research also shows that in addition to the ferromagnetism and piezoelectric response, the mechanical quality factor is another important parameter to achieve high magnetoelectric response because the physical effects are coupled through mechanical interaction in BiFeO3-based materials. Our work suggests that quenching is an effective approach to enhancing the magnetoelectric response of BiFeO3-based materials and the materials belong to single-phase multiferroic materials with high magnetoelectric response.

关键词: multiferroic materials, magnetoelectric, ferromagnetic, piezoelectric

Abstract: The piezoelectric, ferromagnetism, and magnetoelectric response of BiFeO3-BaTiO3 ceramics with the compositions around the morphotropic phase boundary (MPB) of the solid solution are systematically investigated after the ceramics have been quenched from a high temperature. We find that the ferromagnetism of the quenched ceramics is greatly enhanced. An enhanced piezoelectric response d33 larger than 200 pC/N, which could be sustained up to 350℃, is measured. As a result of enhanced ferromagnetism and piezoelectric response, a large magnetoelectric response ~1.3 V/cm·Oe (1 Oe=79.5775 A·m-1) is obtained near the mechanical resonance frequency of the quenched ceramic samples. Our research also shows that in addition to the ferromagnetism and piezoelectric response, the mechanical quality factor is another important parameter to achieve high magnetoelectric response because the physical effects are coupled through mechanical interaction in BiFeO3-based materials. Our work suggests that quenching is an effective approach to enhancing the magnetoelectric response of BiFeO3-based materials and the materials belong to single-phase multiferroic materials with high magnetoelectric response.

Key words: multiferroic materials, magnetoelectric, ferromagnetic, piezoelectric

中图分类号:  (Magnetoelectric effects, multiferroics)

  • 75.85.+t
76.50.+g (Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance) 77.55.H- (Piezoelectric and electrostrictive films)