Local weak ferromagnetism in single-crystalline ferroelectric BiFeO

M. Ramazanoglu; S.-W. Cheong; V. Kiryukhin; M. Laver; W.C. Chen; A. Jackson; K. Kothapalli; W. Ratcliff; S.M. Watson; S. Lee

doi:10.1103/PhysRevLett.107.207206

Local weak ferromagnetism in single-crystalline ferroelectric BiFeO

M. Ramazanoglu, S.-W. Cheong, V. Kiryukhin, M. Laver, W.C. Chen, A. Jackson, K. Kothapalli, W. Ratcliff, S.M. Watson, S. Lee

Metallurgy and Materials

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

101 Citations (Scopus)

Abstract

Polarized small-angle neutron scattering studies of single-crystalline multiferroic BiFeO reveal a long-wavelength spin density wave generated by ∼1° spin canting of the spins out of the rotation plane of the antiferromagnetic cycloidal order. This signifies weak ferromagnetism within mesoscopic regions of dimension 0.03 microns along [11̄0], to several microns along [111], confirming a long-standing theoretical prediction. The average local magnetization is 0.06μ/Fe. Our results provide an indication of the intrinsic macroscopic magnetization to be expected in ferroelectric BiFeO thin films under strain, where the magnetic cycloid is suppressed.

Original language	English
Pages (from-to)	207206
Number of pages	5
Journal	Physical Review Letters
Volume	107
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.107.207206
Publication status	Published - 11 Nov 2011

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title = "Local weak ferromagnetism in single-crystalline ferroelectric BiFeO",

abstract = "Polarized small-angle neutron scattering studies of single-crystalline multiferroic BiFeO reveal a long-wavelength spin density wave generated by ∼1° spin canting of the spins out of the rotation plane of the antiferromagnetic cycloidal order. This signifies weak ferromagnetism within mesoscopic regions of dimension 0.03 microns along [1{\=1}0], to several microns along [111], confirming a long-standing theoretical prediction. The average local magnetization is 0.06μ/Fe. Our results provide an indication of the intrinsic macroscopic magnetization to be expected in ferroelectric BiFeO thin films under strain, where the magnetic cycloid is suppressed.",

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AU - Ramazanoglu, M.

AU - Cheong, S.-W.

AU - Kiryukhin, V.

AU - Laver, M.

AU - Chen, W.C.

AU - Jackson, A.

AU - Kothapalli, K.

AU - Ratcliff, W.

AU - Watson, S.M.

AU - Lee, S.

PY - 2011/11/11

Y1 - 2011/11/11

N2 - Polarized small-angle neutron scattering studies of single-crystalline multiferroic BiFeO reveal a long-wavelength spin density wave generated by ∼1° spin canting of the spins out of the rotation plane of the antiferromagnetic cycloidal order. This signifies weak ferromagnetism within mesoscopic regions of dimension 0.03 microns along [11̄0], to several microns along [111], confirming a long-standing theoretical prediction. The average local magnetization is 0.06μ/Fe. Our results provide an indication of the intrinsic macroscopic magnetization to be expected in ferroelectric BiFeO thin films under strain, where the magnetic cycloid is suppressed.

AB - Polarized small-angle neutron scattering studies of single-crystalline multiferroic BiFeO reveal a long-wavelength spin density wave generated by ∼1° spin canting of the spins out of the rotation plane of the antiferromagnetic cycloidal order. This signifies weak ferromagnetism within mesoscopic regions of dimension 0.03 microns along [11̄0], to several microns along [111], confirming a long-standing theoretical prediction. The average local magnetization is 0.06μ/Fe. Our results provide an indication of the intrinsic macroscopic magnetization to be expected in ferroelectric BiFeO thin films under strain, where the magnetic cycloid is suppressed.

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Local weak ferromagnetism in single-crystalline ferroelectric BiFeO

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