Show simple item record

dc.contributor.authorKenzelmann, M.
dc.contributor.authorHarris, A.B.
dc.contributor.authorAharony, A.
dc.contributor.authorEntin-Wohlman, O.
dc.contributor.authorYildirim, T.
dc.contributor.authorHuang, Q.
dc.contributor.authorPark, S.
dc.contributor.authorLawes, G.
dc.contributor.authorBroholm, C.
dc.contributor.authorRogado, N.
dc.contributor.authorCava, R.J.
dc.contributor.authorKim, K.H.
dc.contributor.authorJorge, G.
dc.contributor.authorRamirez, A.P.
dc.date.accessioned2010-01-06T15:53:57Z
dc.date.available2010-01-06T15:53:57Z
dc.date.issued2006-07-01
dc.identifier.citationSource: Physical Review B (Condensed Matter and Materials Physics) 1 July 2006, vol.74, no.1, pp. 14429-1-26en
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33750
dc.description.abstractWe present powder and single-crystal neutron diffraction and bulk measurements of the Kagome-staircase compound Ni3V2O8 (NVO) in fields up to 8.5 T applied along the c direction. (The Kagome plane is the a-c plane.) This system contains two types of Ni ions, which we call 'spine' and 'cross-tie.' Our neutron measurements can be described with the paramagnetic space group Cmca for T<15 K and each observed magnetically ordered phase is characterized by the appropriate irreducible representation(s). Our zero-field measurements show that at TPH=9.1 K NVO undergoes a transition to a predominantly longitudinal incommensurate structure in which the spine spins are nearly along the a-axis. At THL=6.3 K, there is a transition to an elliptically polarized incommensurate structure with both spine and cross-tie moments in the a-b plane. At TLC=4 K the system undergoes a first-order phase transition to a commensurate antiferromagnetic structure with the staggered magnetization primarily along the a-axis and a weak ferromagnetic moment along the c-axis. A specific heat anomaly at TCC'=2.3 K indicates an additional transition, which remarkably does not affect Bragg peaks of the commensurate C structure. Neutron, specific heat, and magnetization measurements produce a comprehensive temperature-field phase diagram. The symmetries of the incommensurate magnetic phases are consistent with the observation that only one phase is electrically polarized. The magnetic structures are explained theoretically using a simplified model Hamiltonian, that involves competing nearest- and next-nearest-neighbor exchange interactions, single-ion anisotropy, pseudodipolar interactions, and Dzyaloshinskii-Moriya interactions.en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.subjectsimplified model Hamiltonianen
dc.subjecttemperature-field phase diagramen
dc.subjectBragg peaksen
dc.subjectcross-tie momentsen
dc.subjectlongitudinal incommensurate structureen
dc.subjectappropriate irreducible representationen
dc.subjectKagome-staircase compounden
dc.subjectmagnetic orderingen
dc.subjectweak ferromagnetismen
dc.subjectpseudodipolar interactionsen
dc.subjectspecific heaten
dc.subjectspace groupsen
dc.subjectnickel compoundsen
dc.subjectneutron diffractionen
dc.subjectmagnetic transitionsen
dc.subjectmagnetic momentsen
dc.subjectexchange interactions (electron)en
dc.subjectcommensurate-incommensurate transformationsen
dc.subjectantiferromagnetic materialsen
dc.subjectDzyaloshinskii-Moriya interactionen
dc.subjectNi3V2O8en
dc.titleField dependence of magnetic ordering in Kagome-staircase compound Ni3V2O8en
dc.typeArticleen


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record