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Title: Adjustable magnetoelectric effect of self-assembled vertical multiferroic nanocomposite films by the in-plane misfit strain and ferromagnetic volume fraction

Abstract

The strain-mediated magnetoelectric (ME) property of self-assembled vertical multiferroic nanocomposite films epitaxially grown on cubic substrates was calculated by a nonlinear thermodynamic theory combined with the elastic theory. The dependent relations of phase state of ferroelectric films with the in-plane misfit strain, out-of-plane misfit strain, temperature, and volume fraction of ferromagnetic phase were confirmed. The effects of in-plane misfit strain and ferromagnetic volume fraction on the polarization and dielectric constant of ferroelectric films at room temperature were elaborately analyzed for the vertical BaTiO{sub 3}-CoFe{sub 2}O{sub 4} and PbTiO{sub 3}-CoFe{sub 2}O{sub 4} nanocomposite films. Our calculated results confirmed the relationship among ME effect and in-plane misfit strain and ferromagnetic volume fraction in the nanocomposite films. The ME voltage coefficients of vertical BaTiO{sub 3}-CoFe{sub 2}O{sub 4} and PbTiO{sub 3}-CoFe{sub 2}O{sub 4} nanocomposite films displayed various maximums and abrupt points at special phases and phase transition boundaries. The ME voltage coefficients of lead-free BaTiO{sub 3}-CoFe{sub 2}O{sub 4} nanocomposite films epitaxially grown on different substrates could reach a comparative value of ∼2 V·cm{sup −1}·Oe{sup −1} under the controllable in-plane misfit strain induced by substrate clamping. Our results provided an available method for the optimal design of vertical multiferroic nanocomposites with adjustable ME effect by optimizingmore » the ferromagnetic volume fraction and substrate type.« less

Authors:
 [1]; ; ;  [1];  [2];  [3]
  1. Key Laboratory of E and M (Zhejiang University of Technology), Ministry of Education and Zhejiang Province, Hangzhou 310032 (China)
  2. Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, Kyoto 615-8540 (Japan)
  3. College of Information Engineering, China Jiliang University, Hangzhou 310018 (China)
Publication Date:
OSTI Identifier:
22271203
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; BARIUM COMPOUNDS; COBALT OXIDES; COMPOSITE MATERIALS; EPITAXY; FERROELECTRIC MATERIALS; LEAD COMPOUNDS; MAGNETIC PROPERTIES; NANOSTRUCTURES; NONLINEAR PROBLEMS; PERMITTIVITY; PHASE TRANSFORMATIONS; POLARIZATION; STRAINS; SUBSTRATES; TEMPERATURE RANGE 0273-0400 K; THIN FILMS; TITANATES

Citation Formats

Wu, Huaping, Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, Kyoto 615-8540, Chai, Guozhong, Zhou, Ting, Zhang, Zheng, Kitamura, Takayuki, and Zhou, Haomiao. Adjustable magnetoelectric effect of self-assembled vertical multiferroic nanocomposite films by the in-plane misfit strain and ferromagnetic volume fraction. United States: N. p., 2014. Web. doi:10.1063/1.4868896.
Wu, Huaping, Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, Kyoto 615-8540, Chai, Guozhong, Zhou, Ting, Zhang, Zheng, Kitamura, Takayuki, & Zhou, Haomiao. Adjustable magnetoelectric effect of self-assembled vertical multiferroic nanocomposite films by the in-plane misfit strain and ferromagnetic volume fraction. United States. https://doi.org/10.1063/1.4868896
Wu, Huaping, Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, Kyoto 615-8540, Chai, Guozhong, Zhou, Ting, Zhang, Zheng, Kitamura, Takayuki, and Zhou, Haomiao. Fri . "Adjustable magnetoelectric effect of self-assembled vertical multiferroic nanocomposite films by the in-plane misfit strain and ferromagnetic volume fraction". United States. https://doi.org/10.1063/1.4868896.
@article{osti_22271203,
title = {Adjustable magnetoelectric effect of self-assembled vertical multiferroic nanocomposite films by the in-plane misfit strain and ferromagnetic volume fraction},
author = {Wu, Huaping and Department of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, Kyoto 615-8540 and Chai, Guozhong and Zhou, Ting and Zhang, Zheng and Kitamura, Takayuki and Zhou, Haomiao},
abstractNote = {The strain-mediated magnetoelectric (ME) property of self-assembled vertical multiferroic nanocomposite films epitaxially grown on cubic substrates was calculated by a nonlinear thermodynamic theory combined with the elastic theory. The dependent relations of phase state of ferroelectric films with the in-plane misfit strain, out-of-plane misfit strain, temperature, and volume fraction of ferromagnetic phase were confirmed. The effects of in-plane misfit strain and ferromagnetic volume fraction on the polarization and dielectric constant of ferroelectric films at room temperature were elaborately analyzed for the vertical BaTiO{sub 3}-CoFe{sub 2}O{sub 4} and PbTiO{sub 3}-CoFe{sub 2}O{sub 4} nanocomposite films. Our calculated results confirmed the relationship among ME effect and in-plane misfit strain and ferromagnetic volume fraction in the nanocomposite films. The ME voltage coefficients of vertical BaTiO{sub 3}-CoFe{sub 2}O{sub 4} and PbTiO{sub 3}-CoFe{sub 2}O{sub 4} nanocomposite films displayed various maximums and abrupt points at special phases and phase transition boundaries. The ME voltage coefficients of lead-free BaTiO{sub 3}-CoFe{sub 2}O{sub 4} nanocomposite films epitaxially grown on different substrates could reach a comparative value of ∼2 V·cm{sup −1}·Oe{sup −1} under the controllable in-plane misfit strain induced by substrate clamping. Our results provided an available method for the optimal design of vertical multiferroic nanocomposites with adjustable ME effect by optimizing the ferromagnetic volume fraction and substrate type.},
doi = {10.1063/1.4868896},
url = {https://www.osti.gov/biblio/22271203}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 11,
volume = 115,
place = {United States},
year = {2014},
month = {3}
}