中国物理B ›› 2008, Vol. 17 ›› Issue (10): 3910-3916.doi: 10.1088/1674-1056/17/10/059

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

Multiferroic behaviour of epitaxial NiFe2O4--BaTiO3 heterostructures

张 毅, 邓朝勇, 马 静, 林元华, 南策文   

  1. Department of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
  • 收稿日期:2007-09-17 修回日期:2008-10-24 出版日期:2008-10-20 发布日期:2008-10-20
  • 基金资助:
    Project supported by the State Key Development Program for Basic Research of China (Grant No 2002CB613303) and the National High Technology Research and Development Program for Advanced Materials of China (Grant No 2006AA03Z101) and the National Natural Science Foundation of China (Grant Nos 10574078 and 50621201).

Multiferroic behaviour of epitaxial NiFe2O4--BaTiO3 heterostructures

Zhang Yi(张毅), Deng Chao-Yong(邓朝勇), Ma Jing(马静), Lin Yuan-Hua(林元华), and Nan Ce-Wen(南策文)†   

  1. Department of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
  • Received:2007-09-17 Revised:2008-10-24 Online:2008-10-20 Published:2008-10-20
  • Supported by:
    Project supported by the State Key Development Program for Basic Research of China (Grant No 2002CB613303) and the National High Technology Research and Development Program for Advanced Materials of China (Grant No 2006AA03Z101) and the National Natural Science Foundation of China (Grant Nos 10574078 and 50621201).

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摘要： Multiferroic NiFe2O4--BaTiO3 (BTO) bilayered thin films are epitaxially grown on (001) Nb-doped SrTiO$_{3}$ (STO) substrates by pulsed-laser deposition (PLD). Different growth sequences of NFO and BTO on the substrate yield two kinds of epitaxial heterostructures with (001)-orientation, i.e. (001)-NFO/(001)-BTO/substrate and (001)-BTO/(001)-NFO/substrate. Microstructure studies from x-ray diffraction (XRD) and electron microscopies show differences between these two heterostructures, which result in different multiferroic behaviours. The heterostructured composite films exhibit good coexistence of both ferroelectric and ferromagnetic properties, in particular, obvious magnetoelectric (ME) effect on coupling response.

Abstract: Multiferroic NiFe2O4--BaTiO3 (BTO) bilayered thin films are epitaxially grown on (001) Nb-doped SrTiO$_{3}$ (STO) substrates by pulsed-laser deposition (PLD). Different growth sequences of NFO and BTO on the substrate yield two kinds of epitaxial heterostructures with (001)-orientation, i.e. (001)-NFO/(001)-BTO/substrate and (001)-BTO/(001)-NFO/substrate. Microstructure studies from x-ray diffraction (XRD) and electron microscopies show differences between these two heterostructures, which result in different multiferroic behaviours. The heterostructured composite films exhibit good coexistence of both ferroelectric and ferromagnetic properties, in particular, obvious magnetoelectric (ME) effect on coupling response.

Key words: magnetoelectric effect, epitaxial heterostructure, nickel ferrite, multiferroics

中图分类号:  (Magnetomechanical effects, magnetostriction)

  • 75.80.+q
81.15.Fg (Pulsed laser ablation deposition) 75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))