title: Magnetodielectric CuCr0.5V0.5O2: an example of a magnetic and dielectric multiglass.
abstract: The complex dielectric susceptibility and spin glass properties of polycrystalline CuCr(0.5)V(0.5)O(2) delafossite have been investigated. Electron diffraction, high resolution electron microscopy and electron energy loss spectroscopy show that the Cr(3+) and V (3+) magnetic cations are randomly distributed on the triangular network of CdI(2)-type layers. In contrast to CuCrO(2), CuCr(0.5)V(0.5)O(2) exhibits two distinctive (magnetic and electric) glassy states evidenced by memory effects in electric and magnetic susceptibilities. A large magnetodielectric coupling is observed at low temperature.
authors.affiliation: Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, Caen, France.
authors.forename: Kiran
authors.initials: K
authors.lastname: Singh
authors.forename: Antoine
authors.initials: A
authors.lastname: Maignan
authors.forename: Charles
authors.initials: C
authors.lastname: Simon
authors.forename: Sanjay
authors.initials: S
authors.lastname: Kumar
authors.forename: Christine
authors.initials: C
authors.lastname: Martin
authors.forename: Oleg
authors.initials: O
authors.lastname: Lebedev
authors.forename: Stuart
authors.initials: S
authors.lastname: Turner
authors.forename: G
authors.initials: G
authors.lastname: Van Tendeloo