Abstract
GaV4S8 is a Mott insulator having structural transition at ∼44 K and ferromagnetic ordering below ∼12 K. In this article, we present the results of the dc resistivity, ac conductivity, dielectric constant and the magneto-dielectric effect (MDE) measurements on this compound. We observed a crossover from Mott type to Effros-Sklovskii type variable range hopping in going from higher to lower temperature. Frequency dependence of conductivity suggests the hopping transport of the carriers between the pair centers only. The Magneto-dielectric coupling (maximum value of 20% near 22 K) is maximum in the intermediate region of structural and magnetic transitions where exchange splitting of the Fermi surface develops the energetically favorable state for ferromagnetic ordering.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
