63,65Cu NMR study of the magnetically ordered state of the multiferroic CuFeO2

dc.contributor.author Ogloblichev, Vasily
dc.contributor.author Sadykov, Almaz
dc.contributor.author Furukawa, Yuji
dc.contributor.author Ding, Qing-Ping
dc.contributor.author Smolnikov, Alexey
dc.contributor.author Piskunov, Yuri
dc.contributor.author Mikhalev, Konstantin
dc.contributor.author Gerashenko, Alexander
dc.contributor.author Wu, Anhua
dc.contributor.author Barilo, Sergei
dc.contributor.author Shiryaev, Sergei
dc.contributor.department Ames Laboratory
dc.contributor.department Physics and Astronomy
dc.date 2020-04-22T22:23:57.000
dc.date.accessioned 2020-06-29T23:24:30Z
dc.date.available 2020-06-29T23:24:30Z
dc.date.embargo 2021-02-26
dc.date.issued 2020-06-15
dc.description.abstract <p>Field-swept 63,65Cu NMR spectra under magnetic fields up to 8.3 T at a constant NMR frequency and temperatures <em>T</em> < 12 K on a single crystalline sample of multiferroic CuFeO2 were measured and analyzed. When the magnetic field is applied along the <em>c</em> axis, a nearly zero internal magnetic field at the Cu site in magnetic ordered state was observed. This is explained by the perfect cancellation of the internal fields produced by the 6 nearest neighbor Fe3+ (<em>S</em> = 5/2) ions, revealing the magnetic structure to be a collinear four-sublattice structure. On the other hand, when the magnetic field is applied along the <em>ab</em> plane, we observed a finite internal field at the Cu sites, which is due to the canting of the Fe moments. Strong change in the NMR signal intensity is observed around 7–8 T, corresponding to the magnetic phase transition from the collinear magnetic to ferroelectric incommensurate states. The ratio of the two magnetic phases significantly depends on the history of the change in the external magnetic field and the temperature of the sample. The details of history dependence of the ratio were discussed.</p>
dc.identifier archive/lib.dr.iastate.edu/ameslab_manuscripts/621/
dc.identifier.articleid 1616
dc.identifier.contextkey 17489006
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_manuscripts/621
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/7562
dc.language.iso en
dc.relation.ispartofseries IS-J 10167
dc.source.bitstream archive/lib.dr.iastate.edu/ameslab_manuscripts/621/IS_J_10167.pdf|||Sat Jan 15 01:18:40 UTC 2022
dc.source.uri 10.1016/j.jmmm.2020.166668
dc.subject.disciplines Engineering Physics
dc.subject.disciplines Materials Science and Engineering
dc.subject.keywords 63
dc.subject.keywords 65Cu NMR
dc.subject.keywords Frustrated systems
dc.subject.keywords Collinear magnetic structure
dc.subject.keywords Delafossite structure
dc.title 63,65Cu NMR study of the magnetically ordered state of the multiferroic CuFeO2
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication 4a05cd4d-8749-4cff-96b1-32eca381d930
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