Strain-driven phase boundaries in BiFeO3 thin films studied by atomic force microscopy and x-ray diffraction

被引：71

作者：

Liu, Heng-Jui ^{[1
,3
]}

Liang, Chen-Wei ^{[2
]}

Liang, Wen-I ^{[2
]}

Chen, Hsiang-Jung ^{[2
]}

Yang, Jan-Chi ^{[2
]}

Peng, Chun-Yen ^{[2
]}

Wang, Guang-Fu ^{[4
]}

Chu, Feng-Nan ^{[4
]}

Chen, Yi-Chun ^{[4
]}

Lee, Hsin-Yi ^{[3
]}

Chang, Li ^{[2
]}

Lin, Su-Jien ^{[1
]}

Chu, Ying-Hao ^{[2
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30013, Taiwan

[2] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan

[3] Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan

[4] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 01期

关键词：

POLARIZATION ROTATION; ELECTROMECHANICAL RESPONSE; MECHANISM;

D O I：

10.1103/PhysRevB.85.014104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a detailed study on the strain-driven phase transition between the tetragonal-like and rhombohedral-like phases in epitaxial BiFeO3 (BFO) thin films which focuses on their structural nature, thermodynamic stability, and ferroelectric/piezoelectric properties. We first show that the tetragonal-like phase, which has a large c/a ratio (similar to 1.2), in the compressively strained BFO is thermodynamically more favorable at high temperature and high strain state (small thickness). We also report a phase transition between two monoclinic phases at 150 degrees C. The two monoclinic phases are differentiated by their c-axis parameters and tilting angles: The low-temperature phase (M-C) has a c-axis parameter of 4.64 angstrom and a tilting angle (beta = 88.5 degrees) along the a axis, while the high-temperature phase (M-A) has a c-axis parameter of 4.66 angstrom and a tilting angle (beta = 86.8 degrees) along both of the a and b axes. We further show that samples undergoing the M-C-M-A phase transition exhibit ferroelectric polarization rotation and piezoelectric enhancement. Our findings directly unveil the close links between structural changes, polarization rotation, and large piezoelectricity at morphotropic phase boundaries in BiFeO3.

引用

页数：8

共 28 条

[1] Origin of morphotropic phase boundaries in ferroelectrics [J].

Ahart, Muhtar ;

Somayazulu, Maddury ;

Cohen, R. E. ;

Ganesh, P. ;

Dera, Przemyslaw ;

Mao, Ho-Kwang ;

Hemley, Russell J. ;

Ren, Yang ;

Liermann, Peter ;

Wu, Zhigang .

NATURE, 2008, 451 (7178) :545-U2

[2]

Balke N, 2009, NAT NANOTECHNOL, V4, P868, DOI [10.1038/NNANO.2009.293, 10.1038/nnano.2009.293]

[3] Evidence for Room-Temperature Multiferroicity in a Compound with a Giant Axial Ratio [J].

Bea, H. ;

Dupe, B. ;

Fusil, S. ;

Mattana, R. ;

Jacquet, E. ;

Warot-Fonrose, B. ;

Wilhelm, F. ;

Rogalev, A. ;

Petit, S. ;

Cros, V. ;

Anane, A. ;

Petroff, F. ;

Bouzehouane, K. ;

Geneste, G. ;

Dkhil, B. ;

Lisenkov, S. ;

Ponomareva, I. ;

Bellaiche, L. ;

Bibes, M. ;

Barthelemy, A. .

PHYSICAL REVIEW LETTERS, 2009, 102 (21)

[4] Finite-temperature properties of Pb(Zr1-xTix)O3 alloys from first principles [J].

Bellaiche, L ;

García, A ;

Vanderbilt, D .

PHYSICAL REVIEW LETTERS, 2000, 84 (23) :5427-5430

[5] Low-Symmetry Monoclinic Phases and Polarization Rotation Path Mediated by Epitaxial Strain in Multiferroic BiFeO3 Thin Films [J].

Chen, Zuhuang ;

Luo, Zhenlin ;

Huang, Chuanwei ;

Qi, Yajun ;

Yang, Ping ;

You, Lu ;

Hu, Chuansheng ;

Wu, Tom ;

Wang, Junling ;

Gao, Chen ;

Sritharan, Thirumany ;

Chen, Lang .

ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (01) :133-138

[6] Coexistence of ferroelectric triclinic phases in highly strained BiFeO3 films [J].

Chen, Zuhuang ;

Prosandeev, S. ;

Luo, Z. L. ;

Ren, Wei ;

Qi, Yajun ;

Huang, C. W. ;

You, Lu ;

Gao, C. ;

Kornev, I. A. ;

Wu, Tom ;

Wang, Junling ;

Yang, P. ;

Sritharan, T. ;

Bellaiche, L. ;

Chen, Lang .

PHYSICAL REVIEW B, 2011, 84 (09)

[7] Low symmetry monoclinic MC phase in epitaxial BiFeO3 thin films on LaSrAlO4 substrates [J].

Chen, Zuhuang ;

Luo, Zhenlin ;

Qi, Yajun ;

Yang, Ping ;

Wu, Shuxiang ;

Huang, Chuanwei ;

Wu, Tom ;

Wang, Junling ;

Gao, Chen ;

Sritharan, Thirumany ;

Chen, Lang .

APPLIED PHYSICS LETTERS, 2010, 97 (24)

[8] Stress-induced R-MA-MC-T symmetry changes in BiFeO3 films [J].

Christen, H. M. ;

Nam, J. H. ;

Kim, H. S. ;

Hatt, A. J. ;

Spaldin, N. A. .

PHYSICAL REVIEW B, 2011, 83 (14)

[9] Nanoscale Structure and Mechanism for Enhanced Electromechanical Response of Highly Strained BiFeO3 Thin Films [J].

Damodaran, Anoop R. ;

Liang, Chen-Wei ;

He, Qing ;

Peng, Chun-Yen ;

Chang, Li ;

Chu, Ying-Hao ;

Martin, Lane W. .

ADVANCED MATERIALS, 2011, 23 (28) :3170-+

[10] First-principles predictions of low-energy phases of multiferroic BiFeO3 [J].

Dieguez, Oswaldo ;

Gonzalez-Vazquez, O. E. ;

Wojdel, Jacek C. ;

Iniguez, Jorge .

PHYSICAL REVIEW B, 2011, 83 (09)

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