Effect of strain on the ferroelectric properties in epitaxial perovskite titanate thin films grown on ferromagnetic CoFe2O4layers

W. Huang; J. Zhu; H. Z. Zeng; X. H. Wei; Y. Zhang; Y. R. Li; Jianhua Hao

doi:10.1016/j.scriptamat.2008.02.009

Effect of strain on the ferroelectric properties in epitaxial perovskite titanate thin films grown on ferromagnetic CoFe₂O₄layers

W. Huang
, J. Zhu
, H. Z. Zeng
, X. H. Wei
, Y. Zhang
, Y. R. Li
, Jianhua Hao

Research output: Journal article publication › Journal article › Academic research › peer-review

13 Citations (Scopus)

Abstract

A BaTiO3/CoFe2O4heterostructure was fabricated by laser molecular beam epitaxy. The effects of strain on the microstructures, domain morphologies and ferroelectric properties of BaTiO3thin films were studied systematically. Ferroelectric properties in a 40-nm-thick BaTiO3film were suppressed owing to a reduced tetragonality induced by the strain between BaTiO3and the underlying CoFe2O4. For a 100-nm-thick film, BaTiO3exhibits improved the ferroelectric properties with an out-of-plane polarization (2Pr) of 36.4 μC cm-2and an electric coercivity field of 104 kV cm-1. The results show that the thickness of BaTiO3can significantly affect the interfacial strain and hence the ferroelectric properties of the BaTiO3/CoFe2O4heterostructure.

Original language	English
Pages (from-to)	1118-1120
Number of pages	3
Journal	Scripta Materialia
Volume	58
Issue number	12
DOIs	https://doi.org/10.1016/j.scriptamat.2008.02.009
Publication status	Published - 1 Jun 2008

Keywords

Ferroelectric properties
Ferromagnetic films
Heteroepitaxy
Strain

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

More information

10.1016/j.scriptamat.2008.02.009

Cite this

@article{24392b353b32467c998f721ea3f9b5f7,

title = "Effect of strain on the ferroelectric properties in epitaxial perovskite titanate thin films grown on ferromagnetic CoFe2O4layers",

abstract = "A BaTiO3/CoFe2O4heterostructure was fabricated by laser molecular beam epitaxy. The effects of strain on the microstructures, domain morphologies and ferroelectric properties of BaTiO3thin films were studied systematically. Ferroelectric properties in a 40-nm-thick BaTiO3film were suppressed owing to a reduced tetragonality induced by the strain between BaTiO3and the underlying CoFe2O4. For a 100-nm-thick film, BaTiO3exhibits improved the ferroelectric properties with an out-of-plane polarization (2Pr) of 36.4 μC cm-2and an electric coercivity field of 104 kV cm-1. The results show that the thickness of BaTiO3can significantly affect the interfacial strain and hence the ferroelectric properties of the BaTiO3/CoFe2O4heterostructure.",

keywords = "Ferroelectric properties, Ferromagnetic films, Heteroepitaxy, Strain",

author = "W. Huang and J. Zhu and Zeng, \{H. Z.\} and Wei, \{X. H.\} and Y. Zhang and Li, \{Y. R.\} and Jianhua Hao",

year = "2008",

month = jun,

day = "1",

doi = "10.1016/j.scriptamat.2008.02.009",

language = "English",

volume = "58",

pages = "1118--1120",

journal = "Scripta Materialia",

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publisher = "Acta Materialia Inc",

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}

TY - JOUR

T1 - Effect of strain on the ferroelectric properties in epitaxial perovskite titanate thin films grown on ferromagnetic CoFe2O4layers

AU - Huang, W.

AU - Zhu, J.

AU - Zeng, H. Z.

AU - Wei, X. H.

AU - Zhang, Y.

AU - Li, Y. R.

AU - Hao, Jianhua

PY - 2008/6/1

Y1 - 2008/6/1

N2 - A BaTiO3/CoFe2O4heterostructure was fabricated by laser molecular beam epitaxy. The effects of strain on the microstructures, domain morphologies and ferroelectric properties of BaTiO3thin films were studied systematically. Ferroelectric properties in a 40-nm-thick BaTiO3film were suppressed owing to a reduced tetragonality induced by the strain between BaTiO3and the underlying CoFe2O4. For a 100-nm-thick film, BaTiO3exhibits improved the ferroelectric properties with an out-of-plane polarization (2Pr) of 36.4 μC cm-2and an electric coercivity field of 104 kV cm-1. The results show that the thickness of BaTiO3can significantly affect the interfacial strain and hence the ferroelectric properties of the BaTiO3/CoFe2O4heterostructure.

AB - A BaTiO3/CoFe2O4heterostructure was fabricated by laser molecular beam epitaxy. The effects of strain on the microstructures, domain morphologies and ferroelectric properties of BaTiO3thin films were studied systematically. Ferroelectric properties in a 40-nm-thick BaTiO3film were suppressed owing to a reduced tetragonality induced by the strain between BaTiO3and the underlying CoFe2O4. For a 100-nm-thick film, BaTiO3exhibits improved the ferroelectric properties with an out-of-plane polarization (2Pr) of 36.4 μC cm-2and an electric coercivity field of 104 kV cm-1. The results show that the thickness of BaTiO3can significantly affect the interfacial strain and hence the ferroelectric properties of the BaTiO3/CoFe2O4heterostructure.

KW - Ferroelectric properties

KW - Ferromagnetic films

KW - Heteroepitaxy

KW - Strain

UR - https://www.scopus.com/pages/publications/42149167258

U2 - 10.1016/j.scriptamat.2008.02.009

DO - 10.1016/j.scriptamat.2008.02.009

M3 - Journal article

SN - 1359-6462

VL - 58

SP - 1118

EP - 1120

JO - Scripta Materialia

JF - Scripta Materialia

IS - 12

ER -