Field-dependent magnetization of BiFeO3 in an ultrathin La0.7 Sr0.3MnO3/BiFeO3 superlattice

Surendra Singh; J. Xiong; A. P. Chen; M. R. Fitzsimmons; Q. X. Jia

doi:10.1103/PhysRevB.92.224405

Field-dependent magnetization of BiFeO₃ in an ultrathin La_0.7 Sr_0.3MnO₃/BiFeO₃ superlattice

Surendra Singh
, J. Xiong
, A. P. Chen
, M. R. Fitzsimmons
, Q. X. Jia

Department of Materials Design and Innovation

Homi Bhabha National Institute
Los Alamos National Laboratory
Oak Ridge National Laboratory

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

18 Scopus citations

Abstract

We report the observation of field-dependent magnetization of BiFeO3 (BFO) in an ultrathin BFO/La0.7Sr0.3MnO3 (LSMO) superlattice using polarized neutron reflectivity (PNR). Our PNR results indicate parallel alignment of magnetization across BFO/LSMO interfaces. The study showed an increase in average magnetization of the BFO layer on increasing applied magnetic field at 10 K, similar to the ferromagnetic nature of LSMO. We obtained a saturation magnetization of 110±15kA/m(∼0.8μB/Fe) for an ultrathin BFO layer (∼2 unit cells) sandwiched between ultrathin LSMO layers (∼2 unit cells), which is much higher than the canted moment (0.03μB/Fe) in the bulk BFO.

Original language	English
Article number	224405
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	92
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.92.224405
State	Published - Dec 2 2015

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title = "Field-dependent magnetization of BiFeO3 in an ultrathin La0.7 Sr0.3MnO3/BiFeO3 superlattice",

abstract = "We report the observation of field-dependent magnetization of BiFeO3 (BFO) in an ultrathin BFO/La0.7Sr0.3MnO3 (LSMO) superlattice using polarized neutron reflectivity (PNR). Our PNR results indicate parallel alignment of magnetization across BFO/LSMO interfaces. The study showed an increase in average magnetization of the BFO layer on increasing applied magnetic field at 10 K, similar to the ferromagnetic nature of LSMO. We obtained a saturation magnetization of 110±15kA/m(∼0.8μB/Fe) for an ultrathin BFO layer (∼2 unit cells) sandwiched between ultrathin LSMO layers (∼2 unit cells), which is much higher than the canted moment (0.03μB/Fe) in the bulk BFO.",

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doi = "10.1103/PhysRevB.92.224405",

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T1 - Field-dependent magnetization of BiFeO3 in an ultrathin La0.7 Sr0.3MnO3/BiFeO3 superlattice

AU - Singh, Surendra

AU - Xiong, J.

AU - Chen, A. P.

AU - Fitzsimmons, M. R.

AU - Jia, Q. X.

PY - 2015/12/2

Y1 - 2015/12/2

N2 - We report the observation of field-dependent magnetization of BiFeO3 (BFO) in an ultrathin BFO/La0.7Sr0.3MnO3 (LSMO) superlattice using polarized neutron reflectivity (PNR). Our PNR results indicate parallel alignment of magnetization across BFO/LSMO interfaces. The study showed an increase in average magnetization of the BFO layer on increasing applied magnetic field at 10 K, similar to the ferromagnetic nature of LSMO. We obtained a saturation magnetization of 110±15kA/m(∼0.8μB/Fe) for an ultrathin BFO layer (∼2 unit cells) sandwiched between ultrathin LSMO layers (∼2 unit cells), which is much higher than the canted moment (0.03μB/Fe) in the bulk BFO.

AB - We report the observation of field-dependent magnetization of BiFeO3 (BFO) in an ultrathin BFO/La0.7Sr0.3MnO3 (LSMO) superlattice using polarized neutron reflectivity (PNR). Our PNR results indicate parallel alignment of magnetization across BFO/LSMO interfaces. The study showed an increase in average magnetization of the BFO layer on increasing applied magnetic field at 10 K, similar to the ferromagnetic nature of LSMO. We obtained a saturation magnetization of 110±15kA/m(∼0.8μB/Fe) for an ultrathin BFO layer (∼2 unit cells) sandwiched between ultrathin LSMO layers (∼2 unit cells), which is much higher than the canted moment (0.03μB/Fe) in the bulk BFO.

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U2 - 10.1103/PhysRevB.92.224405

DO - 10.1103/PhysRevB.92.224405

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VL - 92

JO - Physical Review B - Condensed Matter and Materials Physics

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IS - 22

M1 - 224405

ER -

Field-dependent magnetization of BiFeO₃ in an ultrathin La_0.7 Sr_0.3MnO₃/BiFeO₃ superlattice

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