  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.
