Header

UZH-Logo

Maintenance Infos

μSR investigation of magnetism and magnetoelectric coupling in Cu_{2}OSeO_{3}


Maisuradze, A; Guguchia, Z; Graneli, B; Rønnow, H M; Berger, H; Keller, H (2011). μSR investigation of magnetism and magnetoelectric coupling in Cu_{2}OSeO_{3}. Physical Review. B, Condensed Matter and Materials Physics, 84(6):064433.

Abstract

A detailed zero- and transverse-field muon spin rotation investigation of magnetism and the magnetoelectric coupling in Cu2OSeO3 is reported. An internal magnetic field Bint(T=0)=85.37(25) mT was found, in agreement with a ferrimagnetic state below Tc=57.0(1) K. The temperature dependence of the magnetic order parameter is well described by the relation Bint=B(0)(1−(T/Tc)2)β̃ with an effective exponent β̃≃0.39(1), which is close to the critical exponent β≃1/3 for a three-dimensional (3D) magnetic system. Just above Tc the muon relaxation rate follows the power law λ(T)∝(T/Tc−1)−ω̃ with ω̃=1.06(9), which is characteristic for 3D ferromagnets. Measurements of Bint(T) with and without an applied electrostatic field E=1.66×105 V/m suggest a possible electric-field effect of magnitude ΔBV=BV(0 V)−BV(500 V)=−0.4(4) mT.

©2011 American Physical Society

Abstract

A detailed zero- and transverse-field muon spin rotation investigation of magnetism and the magnetoelectric coupling in Cu2OSeO3 is reported. An internal magnetic field Bint(T=0)=85.37(25) mT was found, in agreement with a ferrimagnetic state below Tc=57.0(1) K. The temperature dependence of the magnetic order parameter is well described by the relation Bint=B(0)(1−(T/Tc)2)β̃ with an effective exponent β̃≃0.39(1), which is close to the critical exponent β≃1/3 for a three-dimensional (3D) magnetic system. Just above Tc the muon relaxation rate follows the power law λ(T)∝(T/Tc−1)−ω̃ with ω̃=1.06(9), which is characteristic for 3D ferromagnets. Measurements of Bint(T) with and without an applied electrostatic field E=1.66×105 V/m suggest a possible electric-field effect of magnitude ΔBV=BV(0 V)−BV(500 V)=−0.4(4) mT.

©2011 American Physical Society

Statistics

Citations

13 citations in Web of Science®
13 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

61 downloads since deposited on 24 Jan 2012
10 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2011
Deposited On:24 Jan 2012 16:38
Last Modified:05 Apr 2016 15:29
Publisher:American Physical Society
ISSN:1098-0121
Publisher DOI:https://doi.org/10.1103/PhysRevB.84.064433
Related URLs:http://arxiv.org/abs/1105.1083

Download

Preview Icon on Download
Preview
Content: Accepted Version
Filetype: PDF
Size: 510kB
View at publisher

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations