2013/09/25 by Harishchandra Singh, Haranath Ghosh, Singh, Harishchandra +14 · 1 citation
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Ferroelectric and Piezoelectric Materials #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1309.6417
11 pages, 6 figures, 1 table
arxiv created 2013/09/25 · openalex publication_date 2013/09/25 · arxiv updated 2013/09/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report observation of magneto-electric and magneto-dielectric couplings in ceramic Co3TeO6. Temperature dependent DC magnetization and dielectric constant measurements together indicate coupling between magnetic order and electronic polarization. Strong anomaly in dielectric constant at ~ 18K in zero magnetic field indicates presence of spontaneous polarization. Observations like weak ferromagnetic order at lower temperature, field and temperature dependences of the ferroelectric transition provide experimental verification of the recent theoretical proposal by P. Toledano et al., Phys. Rev. B 85, 214439 (2012). We provide direct evidence of spin-phonon coupling as possible origin of magnetic order.