Improved multiferroic behavior in [111]-oriented BiFeO3/ BiAlO3 superlattice

Hang Chen Ding; Ya Wei Li; Wanjiao Zhu; Yong Chao Gao; Shi Jing Gong; Chun Gang Duan

doi:10.1063/1.4795847

Improved multiferroic behavior in [111]-oriented BiFeO₃/ BiAlO₃ superlattice

Hang Chen Ding, Ya Wei Li, Wanjiao Zhu, Yong Chao Gao, Shi Jing Gong, Chun Gang Duan

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

We report a systematic study on the structural, electronic, magnetic, and ferroelectric properties of [111]-oriented BiFeO₃/BiAlO₃ (BFO/BAO) superlattice using density-functional calculations. It is found that the Fe-O-Fe superexchange interactions in BFO/BAO superlattice are greatly suppressed by the inserted BAO layers, with the antiferromagnetic-ferromagnetic transition energy decreasing from around 280 meV per BFO formula unit (five atoms) to 11.6 meV per BFO/BAO formula unit (ten atoms). The tensile strain can further decrease this energy, making the magnetic transition more plausible. In addition, we find that BFO/BAO superlattice preserves the large ferroelectric polarization as well as energy gap of bulk BFO. Therefore, BAO may be a good candidate for constructing the BFO-based superlattice with improved multiferroicity.

Original language	English
Article number	123703
Journal	Journal of Applied Physics
Volume	113
Issue number	12
DOIs	https://doi.org/10.1063/1.4795847
State	Published - 28 Mar 2013

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title = "Improved multiferroic behavior in [111]-oriented BiFeO3/ BiAlO3 superlattice",

abstract = "We report a systematic study on the structural, electronic, magnetic, and ferroelectric properties of [111]-oriented BiFeO3/BiAlO3 (BFO/BAO) superlattice using density-functional calculations. It is found that the Fe-O-Fe superexchange interactions in BFO/BAO superlattice are greatly suppressed by the inserted BAO layers, with the antiferromagnetic-ferromagnetic transition energy decreasing from around 280 meV per BFO formula unit (five atoms) to 11.6 meV per BFO/BAO formula unit (ten atoms). The tensile strain can further decrease this energy, making the magnetic transition more plausible. In addition, we find that BFO/BAO superlattice preserves the large ferroelectric polarization as well as energy gap of bulk BFO. Therefore, BAO may be a good candidate for constructing the BFO-based superlattice with improved multiferroicity.",

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doi = "10.1063/1.4795847",

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T1 - Improved multiferroic behavior in [111]-oriented BiFeO3/ BiAlO3 superlattice

AU - Ding, Hang Chen

AU - Li, Ya Wei

AU - Zhu, Wanjiao

AU - Gao, Yong Chao

AU - Gong, Shi Jing

AU - Duan, Chun Gang

PY - 2013/3/28

Y1 - 2013/3/28

N2 - We report a systematic study on the structural, electronic, magnetic, and ferroelectric properties of [111]-oriented BiFeO3/BiAlO3 (BFO/BAO) superlattice using density-functional calculations. It is found that the Fe-O-Fe superexchange interactions in BFO/BAO superlattice are greatly suppressed by the inserted BAO layers, with the antiferromagnetic-ferromagnetic transition energy decreasing from around 280 meV per BFO formula unit (five atoms) to 11.6 meV per BFO/BAO formula unit (ten atoms). The tensile strain can further decrease this energy, making the magnetic transition more plausible. In addition, we find that BFO/BAO superlattice preserves the large ferroelectric polarization as well as energy gap of bulk BFO. Therefore, BAO may be a good candidate for constructing the BFO-based superlattice with improved multiferroicity.

AB - We report a systematic study on the structural, electronic, magnetic, and ferroelectric properties of [111]-oriented BiFeO3/BiAlO3 (BFO/BAO) superlattice using density-functional calculations. It is found that the Fe-O-Fe superexchange interactions in BFO/BAO superlattice are greatly suppressed by the inserted BAO layers, with the antiferromagnetic-ferromagnetic transition energy decreasing from around 280 meV per BFO formula unit (five atoms) to 11.6 meV per BFO/BAO formula unit (ten atoms). The tensile strain can further decrease this energy, making the magnetic transition more plausible. In addition, we find that BFO/BAO superlattice preserves the large ferroelectric polarization as well as energy gap of bulk BFO. Therefore, BAO may be a good candidate for constructing the BFO-based superlattice with improved multiferroicity.

UR - https://www.scopus.com/pages/publications/84875784045

U2 - 10.1063/1.4795847

DO - 10.1063/1.4795847

M3 - 文章

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SN - 0021-8979

VL - 113

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 12

M1 - 123703

ER -

Improved multiferroic behavior in [111]-oriented BiFeO₃/ BiAlO₃ superlattice

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