Magnetodielectric CuCr0.5V0.5O2: an example of a magnetic and dielectric multiglass |
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Authors: | Singh Kiran Maignan Antoine Simon Charles Kumar Sanjay Martin Christine Lebedev Oleg Turner Stuart Van Tendeloo G |
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Institution: | Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, Caen, France. |
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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. |
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