Enhanced magnetoelectric effect in M-type hexaferrites by Co substitution into trigonal bi-pyramidal sites

J. E. Beevers; C. J. Love; V. K. Lazarov; S. A. Cavill; H. Izadkhah; C. Vittoria; R. Fan; G van der Laan; S S Dhesi

doi:10.1063/1.5017683

Enhanced magnetoelectric effect in M-type hexaferrites by Co substitution into trigonal bi-pyramidal sites

J. E. Beevers, C. J. Love, V. K. Lazarov, S. A. Cavill, H. Izadkhah, C. Vittoria, R. Fan, G van der Laan, S S Dhesi

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

Abstract

The magnetoelectric effect in M-type Ti-Co doped strontium hexaferrite has been studied using a combination of magnetometry and element specific soft X-ray spectroscopies. A large increase (>×30) in the magnetoelectric coefficient is found when Co²⁺ enters the trigonal bi-pyramidal site. The 5-fold trigonal bi-pyramidal site has been shown to provide an unusual mechanism for electric polarization based on the displacement of magnetic transition metal (TM) ions. For Co entering this site, an off-centre displacement of the cation may induce a large local electric dipole as well as providing an increased magnetostriction enhancing the magnetoelectric effect.

Original language	English
Article number	082401
Pages (from-to)	1-6
Number of pages	6
Journal	Applied Physics Letters
Volume	112
Issue number	8
DOIs	https://doi.org/10.1063/1.5017683
Publication status	Published - 20 Feb 2018

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© 2018, AIP Publishing.This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

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10.1063/1.5017683

Enhanced_magnetoelectric_effect_APL_v5d
© 2018, AIP Publishing.This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.
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Cite this

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title = "Enhanced magnetoelectric effect in M-type hexaferrites by Co substitution into trigonal bi-pyramidal sites",

abstract = "The magnetoelectric effect in M-type Ti-Co doped strontium hexaferrite has been studied using a combination of magnetometry and element specific soft X-ray spectroscopies. A large increase (>×30) in the magnetoelectric coefficient is found when Co2+ enters the trigonal bi-pyramidal site. The 5-fold trigonal bi-pyramidal site has been shown to provide an unusual mechanism for electric polarization based on the displacement of magnetic transition metal (TM) ions. For Co entering this site, an off-centre displacement of the cation may induce a large local electric dipole as well as providing an increased magnetostriction enhancing the magnetoelectric effect.",

author = "Beevers, {J. E.} and Love, {C. J.} and Lazarov, {V. K.} and Cavill, {S. A.} and H. Izadkhah and C. Vittoria and R. Fan and {van der Laan}, G and Dhesi, {S S}",

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day = "20",

doi = "10.1063/1.5017683",

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AU - Beevers, J. E.

AU - Love, C. J.

AU - Lazarov, V. K.

AU - Cavill, S. A.

AU - Izadkhah, H.

AU - Vittoria, C.

AU - Fan, R.

AU - van der Laan, G

AU - Dhesi, S S

N1 - © 2018, AIP Publishing.This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details.

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Y1 - 2018/2/20

N2 - The magnetoelectric effect in M-type Ti-Co doped strontium hexaferrite has been studied using a combination of magnetometry and element specific soft X-ray spectroscopies. A large increase (>×30) in the magnetoelectric coefficient is found when Co2+ enters the trigonal bi-pyramidal site. The 5-fold trigonal bi-pyramidal site has been shown to provide an unusual mechanism for electric polarization based on the displacement of magnetic transition metal (TM) ions. For Co entering this site, an off-centre displacement of the cation may induce a large local electric dipole as well as providing an increased magnetostriction enhancing the magnetoelectric effect.

AB - The magnetoelectric effect in M-type Ti-Co doped strontium hexaferrite has been studied using a combination of magnetometry and element specific soft X-ray spectroscopies. A large increase (>×30) in the magnetoelectric coefficient is found when Co2+ enters the trigonal bi-pyramidal site. The 5-fold trigonal bi-pyramidal site has been shown to provide an unusual mechanism for electric polarization based on the displacement of magnetic transition metal (TM) ions. For Co entering this site, an off-centre displacement of the cation may induce a large local electric dipole as well as providing an increased magnetostriction enhancing the magnetoelectric effect.

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ER -

Enhanced magnetoelectric effect in M-type hexaferrites by Co substitution into trigonal bi-pyramidal sites

Abstract

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EPSRC Capital Award for Core Equipment

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Enhanced magnetoelectric effect in M-type hexaferrites by Co substitution into trigonal bi-pyramidal sites

Abstract

Bibliographical note

Access to Document

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EPSRC Capital Award for Core Equipment

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