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We report observation of magneto-electric and magneto-dielectric couplings inceramic Co3TeO6. Temperature dependent DC magnetization and dielectric constantmeasurements together indicate coupling between magnetic order and electronicpolarization. Strong anomaly in dielectric constant at ~ 18K in zero magneticfield indicates presence of spontaneous polarization. Observations like weakferromagnetic order at lower temperature, field and temperature dependences ofthe ferroelectric transition provide experimental verification of the recenttheoretical proposal by P. Toledano et al., Phys. Rev. B 85, 214439 (2012). Weprovide direct evidence of spin-phonon coupling as possible origin of magneticorder.

Spontaneous electric polarization and Magneto-dielectric coupling in ceramic multiferroic Co3TeO6