17O and 51V NMR for the zigzag spin-1 chain compound CaV2O4

dc.contributor.author Lograsso, Thomas
dc.contributor.author Schlagel, Deborah
dc.contributor.author Niazi, A.
dc.contributor.author Yan, J.-Q.
dc.contributor.author Schlagel, Deborah
dc.contributor.author Lograsso, Thomas
dc.contributor.author Johnston, David
dc.contributor.department Ames Laboratory
dc.date 2018-02-13T14:32:04.000
dc.date.accessioned 2020-06-29T23:27:58Z
dc.date.available 2020-06-29T23:27:58Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2008
dc.date.embargo 2013-09-23
dc.date.issued 2008-01-10
dc.description.abstract <p>51V NMR studies on CaV<sub>2</sub>O<sub>4</sub> single crystals and 17O NMR studies on 17O-enriched powder samples are reported. The temperature dependences of the 17O NMR linewidth and nuclear spin-lattice relaxation rate give strong evidence for a long-range antiferromagnetic transition at T<sub>N</sub>=78 K in the powder. Magnetic susceptibility measurements show that T<sub>N</sub>=69 K in the crystals. A zero-field 51V NMR signal was observed at low temperatures (f≈237 MHz at 4.2 K) in the crystals. The field-swept spectra with the field in different directions suggest the presence of two antiferromagnetic substructures. Each substructure is collinear, with the easy axes of the two substructures separated by an angle of 19(1)°, and with their average direction pointing approximately along the b axis of the crystal structure. The two spin substructures contain equal numbers of spins. The temperature dependence of the ordered moment, measured up to 45 K, shows the presence of an energy gap E<sub>G</sub> in the antiferromagnetic spin wave excitation spectrum. Antiferromagnetic spin wave theory suggests that E<sub>G</sub>∕k<sub>B</sub> lies between 64 and 98 K.</p>
dc.description.comments <p>This article is from <em>Physical Review B</em> 77 (2008): 014412, doi:<a href="http://dx.doi.org/10.1103/PhysRevB.77.014412" target="_blank">10.1103/PhysRevB.77.014412</a>.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ameslab_pubs/81/
dc.identifier.articleid 1074
dc.identifier.contextkey 4613932
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_pubs/81
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/8044
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ameslab_pubs/81/2008_ZongX_17O51VNMR.pdf|||Sat Jan 15 02:06:02 UTC 2022
dc.source.uri 10.1103/PhysRevB.77.014412
dc.subject.disciplines Condensed Matter Physics
dc.subject.disciplines Metallurgy
dc.subject.keywords Physics and Astronomy
dc.subject.keywords Materials Science and Engineering
dc.title 17O and 51V NMR for the zigzag spin-1 chain compound CaV2O4
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 316ee29f-99a9-49bc-a048-0f43caf97aa5
relation.isAuthorOfPublication 220ce8a4-546b-4118-8d44-911799a0ffa1
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
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