Simulation of inhomogeneous magnetoelastic anisotropy in ferroelectric/ferromagnetic nanocomposites

被引：22

作者：

Aimon, Nicolas M. ^{[1
]}

Liao, Jiexi ^{[1
]}

Ross, C. A. ^{[1
]}

机构：

[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 23期

关键词：

MULTIFERROIC NANOSTRUCTURES;

D O I：

10.1063/1.4768958

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic response of CoFe2O4/BiFeO3 (CFO/BFO) nanocomposite thin films, in which ferromagnetic CFO nanopillars are embedded in a ferroelectric BFO matrix, has been modeled by including the position-dependent magnetoelastic anisotropy of the CFO. A finite element simulation of the strain state of an arrangement of CFO pillars was performed in which the BFO matrix surrounding one or all of the pillars was subject to a piezoelectric strain. The strain transferred to the CFO pillars was calculated and transformed into a spatially varying magnetoelastic anisotropy in the CFO, and a micromagnetic model was then used to calculate the hysteresis of the pillar, which differed significantly from a macrospin model. The position-dependent anisotropy led to a complex reversal process and to a reorientation of the easy axis to the in-plane direction at sufficient applied electric fields. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4768958]

引用

收藏

页数：5

相关论文

共 21 条

[1] Deposition of epitaxial BiFeO3/CoFe2O4 nanocomposites on (001) SrTiO3 by combinatorial pulsed laser deposition [J].

Aimon, Nicolas M. ;

Kim, Dong Hun ;

Choi, Hong Kyoon ;

Ross, C. A. .

APPLIED PHYSICS LETTERS, 2012, 100 (09)

[2] ANISOTROPY AND MAGNETOSTRICTION OF SOME FERRITES [J].

BOZORTH, RM ;

TILDEN, EF ;

WILLIAMS, AJ .

PHYSICAL REVIEW, 1955, 99 (06) :1788-1798

[3] Effects of film thickness and mismatch strains on magnetoelectric coupling in vertical heteroepitaxial nanocomposite thin films [J].

Chen, H. T. ;

Hong, L. ;

Soh, A. K. .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (09)

[4] Strain dependence of polarization and piezoelectric response in epitaxial BiFeO3 thin films [J].

Daumont, C. ;

Ren, W. ;

Infante, I. C. ;

Lisenkov, S. ;

Allibe, J. ;

Carretero, C. ;

Fusil, S. ;

Jacquet, E. ;

Bouvet, T. ;

Bouamrane, F. ;

Prosandeev, S. ;

Geneste, G. ;

Dkhil, B. ;

Bellaiche, L. ;

Barthelemy, A. ;

Bibes, M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2012, 24 (16)

[5] On the strain coupling across vertical interfaces of switchable BiFeO3-CoFe2O4 multiferroic nanostructures [J].

Dix, N. ;

Muralidharan, R. ;

Guyonnet, J. ;

Warot-Fonrose, B. ;

Varela, M. ;

Paruch, P. ;

Sanchez, F. ;

Fontcuberta, J. .

APPLIED PHYSICS LETTERS, 2009, 95 (06)

[6]

Kabir M., 2011, PROC OF GLSVLSI, P25

[7] Design of self-assembled multiferroic nanostructures in epitaxial films [J].

Levin, Igor ;

Li, Jianhua ;

Slutsker, Julia ;

Roytburd, Alexander L. .

ADVANCED MATERIALS, 2006, 18 (15) :2044-+

[8] Phase transitions and domain structures in strained pseudocubic (100) SrTiO3 thin films [J].

Li, Y. L. ;

Choudhury, S. ;

Haeni, J. H. ;

Biegalski, M. D. ;

Vasudevarao, A. ;

Sharan, A. ;

Ma, H. Z. ;

Levy, J. ;

Gopalan, Venkatraman ;

Trolier-McKinstry, S. ;

Schlom, D. G. ;

Jia, Q. X. ;

Chen, L. Q. .

PHYSICAL REVIEW B, 2006, 73 (18)

[9] SINGLE-CRYSTAL ELASTIC-CONSTANTS OF CO-AL AND CO-FE SPINELS [J].

LI, Z ;

FISHER, ES ;

LIU, JZ ;

NEVITT, MV .

JOURNAL OF MATERIALS SCIENCE, 1991, 26 (10) :2621-2624

[10] Phenomenological theory of 1-3 type multiferroic composite thin film: thickness effect [J].

Lu, XiaoYan ;

Wang, Biao ;

Zheng, Yue ;

Ryba, Earle .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2009, 42 (01)