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Title: Spin correlated dielectric memory and rejuvenation in multiferroic CuCrS{sub 2}

We report a rare consequence of memory effect in dielectric response (ϵ) and magnetic field induced rejuvenation in a relaxor-type multiferroic chalcogenide, CuCrS{sub 2}. Despite reasonably high conductivity, we are able to detect significant spontaneous polarization using an improvised technique verifying ferroelectric (FE) order. Concomitant appearance of both FE and antiferromagnetic orders authenticates multiferroicity. A smeared out FE transition and strong frequency dependence of the broadened peak in ϵ obeying Dynamical scaling law signify relaxor properties. We discuss the role of geometrical frustration in the antiferromagnetically coupled layered triangular lattice and metal ligand hybridization for these unusual properties.
Authors:
; ; ;  [1] ;  [2]
  1. Department of Solid State Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032 (India)
  2. UGC-DAE Consortium for Scientific Research, Kolkata Centre, Salt Lake, Kolkata 700 098 (India)
Publication Date:
OSTI Identifier:
22283257
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETISM; CHROMIUM SULFIDES; COPPER COMPOUNDS; ELECTRIC CONDUCTIVITY; FERROELECTRIC MATERIALS; FREQUENCY DEPENDENCE; LIGANDS; MAGNETIC FIELDS; POLARIZATION; SCALING LAWS; SPIN