Origin of the uniaxial magnetic anisotropy in La0.7Sr 0.3MnO3 on stripe-domain BiFeO3

Lu You; Baomin Wang; Xi Zou; Zhi Shiuh Lim; Yang Zhou; Hui Ding; Lang Chen; Junling Wang

doi:10.1103/PhysRevB.88.184426

Origin of the uniaxial magnetic anisotropy in La_0.7Sr _0.3MnO₃ on stripe-domain BiFeO₃

Lu You
, Baomin Wang
, Xi Zou
, Zhi Shiuh Lim
, Yang Zhou
, Hui Ding
, Lang Chen
, Junling Wang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

40 Citations (Scopus)

Abstract

The La_0.7Sr_0.3MnO₃/BiFeO₃ (LSMO/BFO) heterostructure has been a model system to study the interaction between ferroic order parameters at a complex oxide interface. In this study, uniaxial magnetic anisotropy is artificially induced in LSMO thin film grown on BFO with electrically patterned stripe domains. Variable-field magnetic force microscopy is exploited to investigate the in situ magnetic switching dynamics and subsequently determine the magnetic easy axis of the LSMO thin film. Intriguingly, one-to-one correspondence between the magnetization of LSMO and the polarization of BFO is found. The observed uniaxial magnetic anisotropy is attributed to the magnetocrystalline anisotropy of the LSMO, which is induced by the shear strain of the BFO lattice, rather than the interfacial magnetic coupling which would be more naturally assumed. This finding highlights the crucial role of lattice coupling at a complex oxide interface. When multiple-order parameters come into play at the heterointerface, special care is needed to deconvolute their effects on the related physical properties. © 2013 American Physical Society.

Original language	English
Article number	184426
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	88
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.88.184426
Publication status	Published - 25 Nov 2013
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Origin of the uniaxial magnetic anisotropy in La0.7Sr 0.3MnO3 on stripe-domain BiFeO3",

abstract = "The La0.7Sr0.3MnO3/BiFeO3 (LSMO/BFO) heterostructure has been a model system to study the interaction between ferroic order parameters at a complex oxide interface. In this study, uniaxial magnetic anisotropy is artificially induced in LSMO thin film grown on BFO with electrically patterned stripe domains. Variable-field magnetic force microscopy is exploited to investigate the in situ magnetic switching dynamics and subsequently determine the magnetic easy axis of the LSMO thin film. Intriguingly, one-to-one correspondence between the magnetization of LSMO and the polarization of BFO is found. The observed uniaxial magnetic anisotropy is attributed to the magnetocrystalline anisotropy of the LSMO, which is induced by the shear strain of the BFO lattice, rather than the interfacial magnetic coupling which would be more naturally assumed. This finding highlights the crucial role of lattice coupling at a complex oxide interface. When multiple-order parameters come into play at the heterointerface, special care is needed to deconvolute their effects on the related physical properties. {\textcopyright} 2013 American Physical Society.",

author = "Lu You and Baomin Wang and Xi Zou and Lim, \{Zhi Shiuh\} and Yang Zhou and Hui Ding and Lang Chen and Junling Wang",

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T1 - Origin of the uniaxial magnetic anisotropy in La0.7Sr 0.3MnO3 on stripe-domain BiFeO3

AU - You, Lu

AU - Wang, Baomin

AU - Zou, Xi

AU - Lim, Zhi Shiuh

AU - Zhou, Yang

AU - Ding, Hui

AU - Chen, Lang

AU - Wang, Junling

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2013/11/25

Y1 - 2013/11/25

N2 - The La0.7Sr0.3MnO3/BiFeO3 (LSMO/BFO) heterostructure has been a model system to study the interaction between ferroic order parameters at a complex oxide interface. In this study, uniaxial magnetic anisotropy is artificially induced in LSMO thin film grown on BFO with electrically patterned stripe domains. Variable-field magnetic force microscopy is exploited to investigate the in situ magnetic switching dynamics and subsequently determine the magnetic easy axis of the LSMO thin film. Intriguingly, one-to-one correspondence between the magnetization of LSMO and the polarization of BFO is found. The observed uniaxial magnetic anisotropy is attributed to the magnetocrystalline anisotropy of the LSMO, which is induced by the shear strain of the BFO lattice, rather than the interfacial magnetic coupling which would be more naturally assumed. This finding highlights the crucial role of lattice coupling at a complex oxide interface. When multiple-order parameters come into play at the heterointerface, special care is needed to deconvolute their effects on the related physical properties. © 2013 American Physical Society.

AB - The La0.7Sr0.3MnO3/BiFeO3 (LSMO/BFO) heterostructure has been a model system to study the interaction between ferroic order parameters at a complex oxide interface. In this study, uniaxial magnetic anisotropy is artificially induced in LSMO thin film grown on BFO with electrically patterned stripe domains. Variable-field magnetic force microscopy is exploited to investigate the in situ magnetic switching dynamics and subsequently determine the magnetic easy axis of the LSMO thin film. Intriguingly, one-to-one correspondence between the magnetization of LSMO and the polarization of BFO is found. The observed uniaxial magnetic anisotropy is attributed to the magnetocrystalline anisotropy of the LSMO, which is induced by the shear strain of the BFO lattice, rather than the interfacial magnetic coupling which would be more naturally assumed. This finding highlights the crucial role of lattice coupling at a complex oxide interface. When multiple-order parameters come into play at the heterointerface, special care is needed to deconvolute their effects on the related physical properties. © 2013 American Physical Society.

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U2 - 10.1103/PhysRevB.88.184426

DO - 10.1103/PhysRevB.88.184426

M3 - RGC 21 - Publication in refereed journal

SN - 1098-0121

VL - 88

JO - Physical Review B - Condensed Matter and Materials Physics

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