Strategy to utilize transmission electron microscopy and X-ray diffraction to investigate biaxial strain effect in epitaxial BiFeO3 films

被引：6

作者：

Bae, In-Tae ^{[1
,2
]}

Ichinose, Tomohiro ^{[3
]}

Yasui, Shintaro ^{[4
]}

Kovacs, Andras ^{[5
]}

Zhao, Hong Jian ^{[6
]}

Iniguez, Jorge ^{[6
]}

Naganuma, Hiroshi ^{[3
,7
]}

机构：

[1] SUNY Binghamton, Small Scale Syst Integrat & Packaging Ctr, Binghamton, NY 13902 USA

[2] SUNY Binghamton, Dept Phys, Binghamton, NY 13902 USA

[3] Tohoku Univ, Grad Sch Engn, Dept Appl Phys, Sendai, Miyagi 9808579, Japan

[4] Tokyo Inst Technol, Lab Mat & Struct, Yokohama, Kanagawa 2268502, Japan

[5] Forschungszentrum Julich, Peter Grunberg Inst, Ernst Ruska Ctr Microscopy & Spect Elect ER C, D-52425 Julich, Germany

[6] LIST, Mat Res & Technol Dept, L-4422 Belvaux, Luxembourg

[7] Univ Paris Saclay, Univ Paris Sud, CNRS, Unite Mixte Phys,Thales, F-91767 Palaiseau, France

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 09期

关键词：

THIN-FILMS; PHASE; CRYSTAL; POLARIZATION;

D O I：

10.7567/JJAP.57.0902A5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The recent resurgence of bismuth ferrite (BiFeO3) as a multiferroic material was triggered by the revelation of its true bulk physical properties in the mid 2000s. Subsequently, multiferroic properties of BiFeO3 have been found to improve when it is grown as epitaxial film owing to the biaxial strain imposed by substrate materials. Since the crystal and microstructural modifications caused by the strain dominate the multiferroic property changes in BiFeO3, tremendous efforts have been devoted to the investigation of structural changes in epitaxial BiFeO3 films. However, details about strain-induced structural modifications remain elusive owing to the remarkably complex nature of BiFeO3. In this review, we discuss the followings: (1) what are the pros and cons between transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques, (2) a noble methodology of how to apply TEM and XRD to unambiguously identify crystal symmetries in epitaxial BiFeO3, and (3) once crystal symmetries are clearly identified, how can the misfit strain be accurately evaluated. (C) 2018 The Japan Society of Applied Physics

引用

页数：12

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