Neutron diffraction investigations of magnetism in BiFeO3 epitaxial films

William Ratcliff; Daisuke Kan; Wangchun Chen; Shannon Watson; Songxue Chi; Ross Erwin; Garry J. McIntyre; Sylvia C. Capelli; Ichiro Takeuchi

doi:10.1002/adfm.201002125

Neutron diffraction investigations of magnetism in BiFeO₃ epitaxial films

William Ratcliff, Daisuke Kan, Wangchun Chen, Shannon Watson, Songxue Chi, Ross Erwin, Garry J. McIntyre, Sylvia C. Capelli, Ichiro Takeuchi

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Abstract

The recovery of a modulated magnetic structure in epitaxial BiFeO ₃ thin films as revealed by neutron diffraction is reported. The magnetic structure in thin films is found to strongly depend on substrate orientation. The substrate orientation causes different strain-relaxation processes resulting in different thin-film crystal structures. The (110) oriented film with a monoclinic structural phase has a single-domain modulated magnetic structure where the magnetic moment lies in the HHL plane. For the (111) oriented film that has a rhombohedral structure, a modulated structure superimposed on the G-type antiferromagnetic order is found. These results indicate that slight structural modifications in the BiFeO₃ thin film cause drastic changes in the magnetic structure.

Original language	English
Pages (from-to)	1567-1574
Number of pages	8
Journal	Advanced Functional Materials
Volume	21
Issue number	9
DOIs	https://doi.org/10.1002/adfm.201002125
State	Published - May 10 2011

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abstract = "The recovery of a modulated magnetic structure in epitaxial BiFeO 3 thin films as revealed by neutron diffraction is reported. The magnetic structure in thin films is found to strongly depend on substrate orientation. The substrate orientation causes different strain-relaxation processes resulting in different thin-film crystal structures. The (110) oriented film with a monoclinic structural phase has a single-domain modulated magnetic structure where the magnetic moment lies in the HHL plane. For the (111) oriented film that has a rhombohedral structure, a modulated structure superimposed on the G-type antiferromagnetic order is found. These results indicate that slight structural modifications in the BiFeO3 thin film cause drastic changes in the magnetic structure.",

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AU - Ratcliff, William

AU - Kan, Daisuke

AU - Chen, Wangchun

AU - Watson, Shannon

AU - Chi, Songxue

AU - Erwin, Ross

AU - McIntyre, Garry J.

AU - Capelli, Sylvia C.

AU - Takeuchi, Ichiro

PY - 2011/5/10

Y1 - 2011/5/10

N2 - The recovery of a modulated magnetic structure in epitaxial BiFeO 3 thin films as revealed by neutron diffraction is reported. The magnetic structure in thin films is found to strongly depend on substrate orientation. The substrate orientation causes different strain-relaxation processes resulting in different thin-film crystal structures. The (110) oriented film with a monoclinic structural phase has a single-domain modulated magnetic structure where the magnetic moment lies in the HHL plane. For the (111) oriented film that has a rhombohedral structure, a modulated structure superimposed on the G-type antiferromagnetic order is found. These results indicate that slight structural modifications in the BiFeO3 thin film cause drastic changes in the magnetic structure.

AB - The recovery of a modulated magnetic structure in epitaxial BiFeO 3 thin films as revealed by neutron diffraction is reported. The magnetic structure in thin films is found to strongly depend on substrate orientation. The substrate orientation causes different strain-relaxation processes resulting in different thin-film crystal structures. The (110) oriented film with a monoclinic structural phase has a single-domain modulated magnetic structure where the magnetic moment lies in the HHL plane. For the (111) oriented film that has a rhombohedral structure, a modulated structure superimposed on the G-type antiferromagnetic order is found. These results indicate that slight structural modifications in the BiFeO3 thin film cause drastic changes in the magnetic structure.

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DO - 10.1002/adfm.201002125

M3 - Article

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VL - 21

SP - 1567

EP - 1574

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 9

ER -

Neutron diffraction investigations of magnetism in BiFeO₃ epitaxial films

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