Strain relaxation and enhanced perpendicular magnetic anisotropy in BiFeO3:CoFe2O4 vertically aligned nanocomposite thin films

Wenrui Zhang; Jie Jian; Aiping Chen; Liang Jiao; Fauzia Khatkhatay; Leigang Li; Frank Chu; Quanxi Jia; Judith L. Macmanus-Driscoll; Haiyan Wang

doi:10.1063/1.4864405

Strain relaxation and enhanced perpendicular magnetic anisotropy in BiFeO₃:CoFe₂O₄ vertically aligned nanocomposite thin films

Wenrui Zhang
, Jie Jian
, Aiping Chen
, Liang Jiao
, Fauzia Khatkhatay
, Leigang Li
, Frank Chu
, Quanxi Jia
, Judith L. Macmanus-Driscoll
, Haiyan Wang

Department of Materials Design and Innovation

Texas A&M University
Los Alamos National Laboratory
University of Cambridge

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

Self-assembled BiFeO₃:CoFe₂O₄ (BFO:CFO) vertically aligned nanocomposite thin films have been fabricated on SrTiO₃ (001) substrates using pulsed laser deposition. The strain relaxation mechanism between BFO and CFO with a large lattice mismatch has been studied by X-ray diffraction and transmission electron microscopy. The as-prepared nanocomposite films exhibit enhanced perpendicular magnetic anisotropy as the BFO composition increases. Different anisotropy sources have been investigated, suggesting that spin-flop coupling between antiferromagnetic BFO and ferrimagnetic CFO plays a dominant role in enhancing the uniaxial magnetic anisotropy.

Original language	English
Article number	062402
Journal	Applied Physics Letters
Volume	104
Issue number	6
DOIs	https://doi.org/10.1063/1.4864405
State	Published - Oct 2 2014

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title = "Strain relaxation and enhanced perpendicular magnetic anisotropy in BiFeO3:CoFe2O4 vertically aligned nanocomposite thin films",

abstract = "Self-assembled BiFeO3:CoFe2O4 (BFO:CFO) vertically aligned nanocomposite thin films have been fabricated on SrTiO3 (001) substrates using pulsed laser deposition. The strain relaxation mechanism between BFO and CFO with a large lattice mismatch has been studied by X-ray diffraction and transmission electron microscopy. The as-prepared nanocomposite films exhibit enhanced perpendicular magnetic anisotropy as the BFO composition increases. Different anisotropy sources have been investigated, suggesting that spin-flop coupling between antiferromagnetic BFO and ferrimagnetic CFO plays a dominant role in enhancing the uniaxial magnetic anisotropy.",

author = "Wenrui Zhang and Jie Jian and Aiping Chen and Liang Jiao and Fauzia Khatkhatay and Leigang Li and Frank Chu and Quanxi Jia and Macmanus-Driscoll, \{Judith L.\} and Haiyan Wang",

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T1 - Strain relaxation and enhanced perpendicular magnetic anisotropy in BiFeO3:CoFe2O4 vertically aligned nanocomposite thin films

AU - Zhang, Wenrui

AU - Jian, Jie

AU - Chen, Aiping

AU - Jiao, Liang

AU - Khatkhatay, Fauzia

AU - Li, Leigang

AU - Chu, Frank

AU - Jia, Quanxi

AU - Macmanus-Driscoll, Judith L.

AU - Wang, Haiyan

PY - 2014/10/2

Y1 - 2014/10/2

N2 - Self-assembled BiFeO3:CoFe2O4 (BFO:CFO) vertically aligned nanocomposite thin films have been fabricated on SrTiO3 (001) substrates using pulsed laser deposition. The strain relaxation mechanism between BFO and CFO with a large lattice mismatch has been studied by X-ray diffraction and transmission electron microscopy. The as-prepared nanocomposite films exhibit enhanced perpendicular magnetic anisotropy as the BFO composition increases. Different anisotropy sources have been investigated, suggesting that spin-flop coupling between antiferromagnetic BFO and ferrimagnetic CFO plays a dominant role in enhancing the uniaxial magnetic anisotropy.

AB - Self-assembled BiFeO3:CoFe2O4 (BFO:CFO) vertically aligned nanocomposite thin films have been fabricated on SrTiO3 (001) substrates using pulsed laser deposition. The strain relaxation mechanism between BFO and CFO with a large lattice mismatch has been studied by X-ray diffraction and transmission electron microscopy. The as-prepared nanocomposite films exhibit enhanced perpendicular magnetic anisotropy as the BFO composition increases. Different anisotropy sources have been investigated, suggesting that spin-flop coupling between antiferromagnetic BFO and ferrimagnetic CFO plays a dominant role in enhancing the uniaxial magnetic anisotropy.

UR - https://www.scopus.com/pages/publications/84903218465

U2 - 10.1063/1.4864405

DO - 10.1063/1.4864405

M3 - Article

AN - SCOPUS:84903218465

SN - 0003-6951

VL - 104

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 6

M1 - 062402

ER -

Strain relaxation and enhanced perpendicular magnetic anisotropy in BiFeO₃:CoFe₂O₄ vertically aligned nanocomposite thin films

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