Spin dynamics and magnetoelectric coupling mechanism of Co4 N b2 O9

Guochu Deng; Yiming Cao; Wei Ren; Shixun Cao; Andrew J. Studer; Nicolas Gauthier; Michel Kenzelmann; Gene Davidson; Kirrily C. Rule; Jason S. Gardner; Paolo Imperia; Clemens Ulrich; Garry J. McIntyre

doi:10.1103/PhysRevB.97.085154

Spin dynamics and magnetoelectric coupling mechanism of Co₄ N b2 O₉

Guochu Deng, Yiming Cao, Wei Ren, Shixun Cao, Andrew J. Studer, Nicolas Gauthier, Michel Kenzelmann, Gene Davidson, Kirrily C. Rule, Jason S. Gardner, Paolo Imperia, Clemens Ulrich, Garry J. McIntyre

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

49 Scopus citations

Abstract

Neutron powder diffraction experiments reveal that Co4Nb2O9 forms a noncollinear in-plane magnetic structure with Co2+ moments lying in the ab plane. The spin-wave excitations of this magnet were measured by using inelastic neutron scattering and soundly simulated by a dynamic model involving nearest- and next-nearest-neighbor exchange interactions, in-plane anisotropy, and the Dzyaloshinskii-Moriya interaction. The in-plane magnetic structure of Co4Nb2O9 is attributed to the large in-plane anisotropy, while the noncollinearity of the spin configuration is attributed to the Dzyaloshinskii-Moriya interaction. The high magnetoelectric coupling effect of Co4Nb2O9 in fields can be explained by its special in-plane magnetic structure.

Original language	English
Article number	085154
Journal	Physical Review B
Volume	97
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.97.085154
State	Published - Feb 28 2018
Externally published	Yes

Funding

We thank ANSTO for the allocation of neutron beam time on WOMBAT, SIKA, and TAIPAN (P3843, P3844, P4348, and P4851). This work is supported by the National Natural Science Foundation of China (NSFC, No. 11774217, No. 51372149, and No. 51672171), the National Key Basic Research Program of China (Grant No. 2015CB921600), Eastern Scholar Program from Shanghai Municipal Education Commission, and the research grant (No. 16DZ2260600) from Science and Technology Commission of Shanghai Municipality.

Funders	Funder number
National Natural Science Foundation of China	11774217, 51372149, 51672171
Shanghai Municipal Education Commission	16DZ2260600
Science and Technology Commission of Shanghai Municipality
National Basic Research Program of China (973 Program)	2015CB921600

Access to Document

10.1103/PhysRevB.97.085154

Cite this

@article{55ddef35aa3041fda2bd04c8bf9cada2,

title = "Spin dynamics and magnetoelectric coupling mechanism of Co4 N b2 O9",

abstract = "Neutron powder diffraction experiments reveal that Co4Nb2O9 forms a noncollinear in-plane magnetic structure with Co2+ moments lying in the ab plane. The spin-wave excitations of this magnet were measured by using inelastic neutron scattering and soundly simulated by a dynamic model involving nearest- and next-nearest-neighbor exchange interactions, in-plane anisotropy, and the Dzyaloshinskii-Moriya interaction. The in-plane magnetic structure of Co4Nb2O9 is attributed to the large in-plane anisotropy, while the noncollinearity of the spin configuration is attributed to the Dzyaloshinskii-Moriya interaction. The high magnetoelectric coupling effect of Co4Nb2O9 in fields can be explained by its special in-plane magnetic structure.",

author = "Guochu Deng and Yiming Cao and Wei Ren and Shixun Cao and Studer, {Andrew J.} and Nicolas Gauthier and Michel Kenzelmann and Gene Davidson and Rule, {Kirrily C.} and Gardner, {Jason S.} and Paolo Imperia and Clemens Ulrich and McIntyre, {Garry J.}",

note = "Publisher Copyright: {\textcopyright} 2018 American Physical Society.",

year = "2018",

month = feb,

day = "28",

doi = "10.1103/PhysRevB.97.085154",

language = "English",

volume = "97",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "8",

}

TY - JOUR

T1 - Spin dynamics and magnetoelectric coupling mechanism of Co4 N b2 O9

AU - Deng, Guochu

AU - Cao, Yiming

AU - Ren, Wei

AU - Cao, Shixun

AU - Studer, Andrew J.

AU - Gauthier, Nicolas

AU - Kenzelmann, Michel

AU - Davidson, Gene

AU - Rule, Kirrily C.

AU - Gardner, Jason S.

AU - Imperia, Paolo

AU - Ulrich, Clemens

AU - McIntyre, Garry J.

PY - 2018/2/28

Y1 - 2018/2/28

N2 - Neutron powder diffraction experiments reveal that Co4Nb2O9 forms a noncollinear in-plane magnetic structure with Co2+ moments lying in the ab plane. The spin-wave excitations of this magnet were measured by using inelastic neutron scattering and soundly simulated by a dynamic model involving nearest- and next-nearest-neighbor exchange interactions, in-plane anisotropy, and the Dzyaloshinskii-Moriya interaction. The in-plane magnetic structure of Co4Nb2O9 is attributed to the large in-plane anisotropy, while the noncollinearity of the spin configuration is attributed to the Dzyaloshinskii-Moriya interaction. The high magnetoelectric coupling effect of Co4Nb2O9 in fields can be explained by its special in-plane magnetic structure.

AB - Neutron powder diffraction experiments reveal that Co4Nb2O9 forms a noncollinear in-plane magnetic structure with Co2+ moments lying in the ab plane. The spin-wave excitations of this magnet were measured by using inelastic neutron scattering and soundly simulated by a dynamic model involving nearest- and next-nearest-neighbor exchange interactions, in-plane anisotropy, and the Dzyaloshinskii-Moriya interaction. The in-plane magnetic structure of Co4Nb2O9 is attributed to the large in-plane anisotropy, while the noncollinearity of the spin configuration is attributed to the Dzyaloshinskii-Moriya interaction. The high magnetoelectric coupling effect of Co4Nb2O9 in fields can be explained by its special in-plane magnetic structure.

UR - http://www.scopus.com/inward/record.url?scp=85043292282&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.97.085154

DO - 10.1103/PhysRevB.97.085154

M3 - Article

AN - SCOPUS:85043292282

SN - 2469-9950

VL - 97

JO - Physical Review B

JF - Physical Review B

IS - 8

M1 - 085154

ER -

Spin dynamics and magnetoelectric coupling mechanism of Co₄ N b2 O₉

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this