Magnetic, ferroelectric and magnetoelectric coupling properties of Fe-implanted BaTiO3 films

被引：11

作者：

Ye, X. J. ^{[1
,2
]}

Zhou, Z. Z. ^{[3
]}

Zhong, W. ^{[1
]}

Hou, D. L. ^{[3
]}

Cao, H. T. ^{[2
]}

Au, C. T. ^{[4
]}

Du, Y. W. ^{[1
]}

机构：

[1] Nanjing Univ, Nanjing Natl Lab Microstruct, Nanjing 210093, Peoples R China

[2] Chinese Acad Sci, Div Funct Mat & Nano Devices, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[3] Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China

[4] Hong Kong Baptist Univ, Dept Chem, Hong Kong, Hong Kong, Peoples R China

来源：

THIN SOLID FILMS | 2011年 / 519卷 / 07期

基金：

国家高技术研究发展计划(863计划);

关键词：

Barium titanate; Iron; Implantation; Ferromagnetic properties; Ferroelectric properties; Annealing; ION-IMPLANTATION; RAMAN SPECTRUM; THIN-FILMS;

D O I：

10.1016/j.tsf.2010.11.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

BaTiO3 (BTO) nano-films were implanted with iron by means of ion-implantation. According to the results of X-ray diffraction (XRD) and Raman analysis, all the films are single-phase with tetragonal structure. Upon the increase of Fe dosage, on one hand, there is a decrease in c/a ratio of the unit cells. As the grain size and surface roughness of the Fe-implanted films decrease, the well crystallized film was obtained. Consequently, both decreasing of coercivity and boosting of magnetization were observed simultaneously. With the decline of the grain size and surface roughness during thermal treatment of the Fe-implanted films, there is an improvement of Fe distribution across the BTO matrix. Consequently, there is a decrease of coercivity and rise of magnetization. Upon the decrease of Fe dosage, on the other, there is a decline in magnetization, and a ferroelectric hysteresis loop is observed at a Fe dosage of 3.0 x 10(14) cm(-2). Additionally, the dependence of capacitance on the applied magnetic field and its frequency were also monitored. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2163 / 2167

页数：5

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