Multiferroicity and colossal magneto-capacitance in Cr-thiospinels

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dc.creatorHemberger, J.
dc.creatorLunkenheimer, P.
dc.creatorFichtl, R.
dc.creatorWeber, S.
dc.creatorTsurkan, V.
dc.creatorLoidl, A.
dc.date2006-08-04
dc.date.accessioned2026-07-07T07:19:33Z
dc.date.available2026-07-07T07:19:33Z
dc.descriptionThe sulfur based Cr-spinels RCr2S4 with R = Cd and Hg exhibit the coexistence of ferromagnetic and ferroelectric properties together with a pronounced magnetocapacitive coupling. While in CdCr2S4 purely ferromagnetic order is established, in HgCr2S4 a bond-frustrated magnetic ground state is realized, which, however, easily can be driven towards a ferromagnetic configuration in weak magnetic fields. This paper shall review our recent investigation for both compounds. Besides the characterization of the magnetic properties, the complex dielectric permittivity was studied by means of broadband dielectric spectroscopy as well as measurements of polarization hysteresis and pyro-currents. The observed colossal magneto-capacitive effect at the magnetic transition seems to be driven by an enormous variation of the relaxation dynamics.
dc.description10 pages, 11 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0608113
dc.identifierhttp://arxiv.org/abs/cond-mat/0608113
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/114666
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleMultiferroicity and colossal magneto-capacitance in Cr-thiospinels
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