Nature of Ho magnetism in multiferroic HoMnO3

TitleNature of Ho magnetism in multiferroic HoMnO3
Publication TypeJournal Article
Year of Publication2008
AuthorsNandi S, Kreyssig A, Tan L, Kim JW, Yan JQ, Lang JC, Haskel D, McQueeney RJ, Goldman AI
Journal TitlePhysical Review Letters
Date PublishedMay
Type of ArticleArticle
ISBN Number0031-9007
Accession NumberISI:000256585500044
Keywordsdiffraction, field, polarization, RESONANT EXCHANGE SCATTERING

Using x-ray resonant magnetic scattering and x-ray magnetic circular dichroism, techniques that are element specific, we have elucidated the role of Ho3+ in multiferroic HoMnO3. In zero field, Ho3+ orders antiferromagnetically with moments aligned along the hexagonal c direction below 40 K, and undergoes a transition to another magnetic structure below 4.5 K. In applied electric fields of up to 1 x 10(7) V/m, the magnetic structure of Ho3+ remains unchanged.

Alternate JournalPhys. Rev. Lett.