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Magnetoelectric domains and their switching mechanism in a Y-type hexaferrite

Magnetoelectric domains and their switching mechanism in a Y-type hexaferrite
Magnetoelectric domains and their switching mechanism in a Y-type hexaferrite
By employing resonant X-ray microdiffraction, we image the magnetisation and magnetic polarity domains of the Y-type hexaferrite Ba0.5 Sr1.5 Mg2 Fe12 O22. We show that the magnetic polarity domain structure can be controlled by both magnetic and electric fields, and that full inversion of these domains can be achieved simply by reversal of an applied magnetic field in the absence of an electric field bias. Furthermore, we demonstrate that the diffraction intensity measured in different X-ray polarisation channels cannot be reproduced by the accepted model for the polar magnetic structure, known as the 2-fan transverse conical (TC) model. We propose a modification to this model, which achieves good quantitative agreement with all of our data. We show that the deviations from the TC model are large, and may be the result of an internal magnetic chirality, most likely inherited from the parent helical (non-polar) phase.
Chmiel, Francis P.
2de259aa-a5eb-460c-bfbf-8b44ed02e2bd
Prabahakaran, Dharmalingam
040e71c8-5cfc-45a0-9fe7-d804edeb985e
Steadman, Paul
a5379015-bbe1-4eb7-81f0-6841955748d0
Chen, Jiahao
d2d5b33b-66ac-4b9a-87fb-fda04b428b4a
Fan, Raymond
e3005ae7-374e-4972-a4b1-4d0233ea9699
Johnson, Roger D.
5ed9812f-c020-40a3-b1f1-e7a5780ca2d4
Radaelli, Paolo G.
210d4ab2-ae25-4d5d-bc1e-5fc881dc6006
Chmiel, Francis P.
2de259aa-a5eb-460c-bfbf-8b44ed02e2bd
Prabahakaran, Dharmalingam
040e71c8-5cfc-45a0-9fe7-d804edeb985e
Steadman, Paul
a5379015-bbe1-4eb7-81f0-6841955748d0
Chen, Jiahao
d2d5b33b-66ac-4b9a-87fb-fda04b428b4a
Fan, Raymond
e3005ae7-374e-4972-a4b1-4d0233ea9699
Johnson, Roger D.
5ed9812f-c020-40a3-b1f1-e7a5780ca2d4
Radaelli, Paolo G.
210d4ab2-ae25-4d5d-bc1e-5fc881dc6006

Chmiel, Francis P., Prabahakaran, Dharmalingam, Steadman, Paul, Chen, Jiahao, Fan, Raymond, Johnson, Roger D. and Radaelli, Paolo G. (2019) Magnetoelectric domains and their switching mechanism in a Y-type hexaferrite. Physical Review, B, 100 (10), [104411]. (doi:10.1103/PhysRevB.100.104411).

Record type: Article

Abstract

By employing resonant X-ray microdiffraction, we image the magnetisation and magnetic polarity domains of the Y-type hexaferrite Ba0.5 Sr1.5 Mg2 Fe12 O22. We show that the magnetic polarity domain structure can be controlled by both magnetic and electric fields, and that full inversion of these domains can be achieved simply by reversal of an applied magnetic field in the absence of an electric field bias. Furthermore, we demonstrate that the diffraction intensity measured in different X-ray polarisation channels cannot be reproduced by the accepted model for the polar magnetic structure, known as the 2-fan transverse conical (TC) model. We propose a modification to this model, which achieves good quantitative agreement with all of our data. We show that the deviations from the TC model are large, and may be the result of an internal magnetic chirality, most likely inherited from the parent helical (non-polar) phase.

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More information

Submitted date: 2 April 2019
e-pub ahead of print date: 6 September 2019
Published date: September 2019

Identifiers

Local EPrints ID: 431618
URI: http://eprints.soton.ac.uk/id/eprint/431618
PURE UUID: 0ada34d7-6e75-44f8-9a1c-ea0da9e30b97

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Date deposited: 11 Jun 2019 16:30
Last modified: 16 Mar 2024 02:12

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Contributors

Author: Francis P. Chmiel
Author: Dharmalingam Prabahakaran
Author: Paul Steadman
Author: Jiahao Chen
Author: Raymond Fan
Author: Roger D. Johnson
Author: Paolo G. Radaelli

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