Considering both Landau free energy at thermodynamic equilibrium state should be stable and every order parameter should be real in extensive Landau-type phenomenological theory, we have obtained Landau expansion coefficients of BiFeO_3 materials. The magnetization hysteresis loop, polarization hysteresis loop, and the magnetic field dependence of the magnetoelectric coefficient are calculated, which are in good agreement with experimental data reported in previous literatures.
WANG Ying-long
,
WANG Xing-yuan
,
DING Xue-cheng
,
LIANG Wei-hua
,
DENG Ze-chao
,
CHU Li-zhi
,
FU Guang-sheng
. Amendment to the Multiferroic Landau Model of BiFeO_3[J]. Journal of Hebei University(Natural Science Edition), 2009
, 29(6)
: 577
-581
.
DOI: 10.3969/j.issn.1000-1565.2009.06.006
[1] WANG Jin, NEATON J B, ZHENG H. Epitaxial BiFeO_3 multiferroic thin film heterostructures [J]. Science 2003, 299.
[2] Nicola A. Spaldin, Manfred Fiebig. The Renaissance of Magnetoelectric Multiferroics [J]. Science 2005, 5733(5733).
[3] CHENG Jinrong, YU Shengwen, CHEN Jiangguo. Dielectric and magnetic enhancements in BiFeO_3-PbTiO_3 solid solutions with La doping [J]. Applied Physics Letters 2006, 89.
[4] VAKNIN D, ZARESTKY J L, RIVERA J -P. Commensurate-incommensurate magnetic phase transition in magnetoelectric single crystal LiNiPO_4 [J]. Physical Review Letters 2004, 92.
[5] Filippetti A., Hill NA.. First principles study of structural, electronic and magnetic interplay in ferroelectromagnetic yttrium manganite [J]. Journal of Magnetism and Magnetic Materials 2001, 1/2(1/2).
[6] Jiang Q, Qiu JH. The thickness dependence of ferroelectric and magnetic properties in epitaxial BiFeO3 thin films [J]. Journal of Applied Physics 2006, 10(10).
[7] S. P. Alpay, I. B. Misirlioglu, A. Sharma, Z.-G. Ban. Structural characteristics of ferroelectric phase transformations in single-domain epitaxial films [J]. Journal of Applied Physics 2004, 12(12).
[8] RUETTE B, ZVYAGIN S, PYATAKOV A P. Magnetic-field-induced phase transition in BiFeO_3 observed by Cycloidal to homogeneous spin order high-field electron spin resonance:Cycloidal to homogeneous spin order [J]. Physical Review B:Condensed Matter 2004, 69.
[9] BAI Feiming, WANG Junling, WUTTING M. Destruction of spin cycloid in (111)c-oriented BiFeO_3 thin films by epitiaxial constraint:Enhanced polarization and release of latent magnetization [J]. Applied Physics Letters 2005, 86.
[10] YANO Y, LIJIMA K, DAITOTOH Y. Epitaxial growth and dielectric properties of BaTiO_3 films on Pt electrodes by reactive evaporation [J]. Journal of Applied Physics 1994, 76.
[11] Pertsev NA., Tagantsev AK., Zembilgotov AG.. Effect of mechanical boundary conditions on phase diagrams of epitaxial ferroelectric thin films [J]. Physical review letters 1998, 9(9).
[12] MATTHEWS J W, BLAKESLEE A E. Defects in epitaxial multilayers [J]. Journal of Crystal Growth 1974, 27.
[13] SPECK J S, POMPE W. Thermodynamics of polydomain heterostructures [J]. Journal of Applied Physics 1998, 83.
[14] ALPAY S P, NAGARAJAN V, BENDERSKY A. Effect of the electrode layer on the polydomain structure of epitaxial PbZr_(0.2)Ti_(0.8)O_3 thin films [J]. Journal of Applied Physics 1998, 85.
[15] WANG Jin, SCHOLL A, ZHENG H. Response to comment on 'Epitaxial BiFeO_3 multiferroic thin film heterostructures' [J]. Science 2005, 307.
