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

TY - JOUR

T1 - Enhanced magnetoelectric effect in M-type hexaferrites by Co substitution into trigonal bi-pyramidal sites

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.

PY - 2018/2/20

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.

UR - http://www.scopus.com/inward/record.url?scp=85042514774&partnerID=8YFLogxK

U2 - 10.1063/1.5017683

DO - 10.1063/1.5017683

M3 - Article

AN - SCOPUS:85042514774

SN - 0003-6951

VL - 112

SP - 1

EP - 6

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 082401

ER -