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dc.contributor.authorAeppli, G.
dc.contributor.authorLee, S.-H.
dc.contributor.authorBroholm, C.
dc.contributor.authorDiTusa, J.F.
dc.contributor.authorBao, W.
dc.date.accessioned2009-12-23T14:42:17Z
dc.date.available2009-12-23T14:42:17Z
dc.date.issued1996-04-15
dc.identifier.citationJournal of Applied Physics, 15 April 1996, vol.79, no.8, pt.2A, pp. 5023-8en
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33726
dc.description.abstractMost magnets have long-range magnetic order when the thermal energy is less than the local magnetic exchange energy (T<|ΘCW|) effects such as reduced dimensionality and frustration, 1 however, can suppress the ordering transition and lead to unusual cooperative paramagnetic phases at low temperatures. We review neutron scattering experiments exploring such short-range-ordered phases in insulating transition metal oxides. We discuss (V1-xCrx)2O3, in which orbital fluctuations appear to limit spin correlations to within small “molecular” clusters, SrCr9pGa12-9pO19, in which geometrical frustration allows local antiferromagnetic constraints to be fulfilled without long-ranged order, and Y2BaNiO5, in which magnetic interactions occur only within chains of spins which are unable to order because of the Haldane effect. Emphasis is placed on the common features of exchange interactions in these oxides and the important role which magnetic neutron scattering has played in understanding the unusual magnetic phenomena.en
dc.language.isoen_USen
dc.publisherAmerican Institute of Physicsen
dc.subjectantiferromagnetic materialsen
dc.subjectexchange interactions (electron)en
dc.subjectinsulating transition metal oxidesen
dc.subject(V1-xCrx)2O3en
dc.subjectshort-range-ordered phasesen
dc.subjectparamagnetic materialsen
dc.subjectlocal antiferromagnetic constraintsen
dc.subjectspin correlationsen
dc.subjectSrCr9pGa12-9pO19en
dc.subjectreduced dimensionalityen
dc.subject(VCr)2O3en
dc.subjectorbital fluctuationsen
dc.subjectlong-range orderen
dc.subjectshort-range orderen
dc.subjectmagnetic transitionsen
dc.subjectgeometrical frustrationen
dc.subjectordering transitionen
dc.subjectcooperative paramagnetic phasesen
dc.subjectSr(CrGa)12O19en
dc.subjectY2BaNiO5en
dc.titleStrong magnetic fluctuations in transition metal oxidesen
dc.typeArticleen


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