中国物理B ›› 2016, Vol. 25 ›› Issue (10): 107701-107701.doi: 10.1088/1674-1056/25/10/107701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Emergent ferroelectricity in disordered tri-color multilayer structure comprised of ferromagnetic manganites

Li-Wei Niu(牛利伟), Chang-Le Chen(陈长乐), Xiang-Lei Dong(董祥雷), Hui Xing(邢辉), Bing-Cheng Luo(罗炳成), Ke-Xin Jin(金克新)   

  1. The Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710129, China
  • 收稿日期:2016-03-29 修回日期:2016-05-25 出版日期:2016-10-05 发布日期:2016-10-05
  • 通讯作者: Chang-Le Chen E-mail:chenchl@nwpu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61471301, 61078057, 51172183, 51402240, and 51471134), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20126102110045), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2015JQ5125), and the Fundamental Research Funds for the Central Universities, China (Grant No. 3102015ZY078).

Emergent ferroelectricity in disordered tri-color multilayer structure comprised of ferromagnetic manganites

Li-Wei Niu(牛利伟), Chang-Le Chen(陈长乐), Xiang-Lei Dong(董祥雷), Hui Xing(邢辉), Bing-Cheng Luo(罗炳成), Ke-Xin Jin(金克新)   

  1. The Key Laboratory of Space Applied Physics and Chemistry, Shaanxi Key Laboratory of Condensed Matter Structures and Properties, Northwestern Polytechnical University, Xi'an 710129, China
  • Received:2016-03-29 Revised:2016-05-25 Online:2016-10-05 Published:2016-10-05
  • Contact: Chang-Le Chen E-mail:chenchl@nwpu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61471301, 61078057, 51172183, 51402240, and 51471134), the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20126102110045), the Natural Science Foundation of Shaanxi Province, China (Grant No. 2015JQ5125), and the Fundamental Research Funds for the Central Universities, China (Grant No. 3102015ZY078).

摘要:

Multiferroic materials, showing the coexistence and coupling of ferroelectric and magnetic orders, are of great technological and fundamental importance. However, the limitation of single phase multiferroics with robust magnetization and polarization hinders the magnetoelectric effect from being applied practically. Magnetic frustration, which can induce ferroelectricity, gives rise to multiferroic behavior. In this paper, we attempt to construct an artificial magnetically frustrated structure comprised of manganites to induce ferroelectricity. A disordered stacking of manganites is expected to result in frustration at interfaces. We report here that a tri-color multilayer structure comprised of non-ferroelectric La0.9Ca0.1MnO3(A)/Pr0.85Ca0.15MnO3(B)/Pr0.85Sr0.15MnO3(C) layers with the disordered arrangement of ABC-ACB-CAB-CBA-BAC-BCA is prepared to form magnetoelectric multiferroics. The multilayer film exhibits evidence of ferroelectricity at room temperature, thus presenting a candidate for multiferroics.

关键词: multiferroic materials, disordered stacking, ferroelectricity

Abstract:

Multiferroic materials, showing the coexistence and coupling of ferroelectric and magnetic orders, are of great technological and fundamental importance. However, the limitation of single phase multiferroics with robust magnetization and polarization hinders the magnetoelectric effect from being applied practically. Magnetic frustration, which can induce ferroelectricity, gives rise to multiferroic behavior. In this paper, we attempt to construct an artificial magnetically frustrated structure comprised of manganites to induce ferroelectricity. A disordered stacking of manganites is expected to result in frustration at interfaces. We report here that a tri-color multilayer structure comprised of non-ferroelectric La0.9Ca0.1MnO3(A)/Pr0.85Ca0.15MnO3(B)/Pr0.85Sr0.15MnO3(C) layers with the disordered arrangement of ABC-ACB-CAB-CBA-BAC-BCA is prepared to form magnetoelectric multiferroics. The multilayer film exhibits evidence of ferroelectricity at room temperature, thus presenting a candidate for multiferroics.

Key words: multiferroic materials, disordered stacking, ferroelectricity

中图分类号:  (Multiferroic/magnetoelectric films)

  • 77.55.Nv
71.55.Jv (Disordered structures; amorphous and glassy solids) 77.80.-e (Ferroelectricity and antiferroelectricity)