A New Multiferroic Material: MnWO4
arXiv:cond-mat/0608498 · doi:10.1088/0953-8984/18/39/L01
Abstract
We report the multiferroic behaviour of MnWO$_4$, a magnetic oxide with monoclinic crystal structure and spiral long-range magnetic order. Based upon recent theoretical predictions MnWO$_4$ should exhibit ferroelectric polarization coexisting with the proper magnetic structure. We have confirmed the multiferroic state below 13 K by observing a finite electrical polarization in the magnetically ordered state via pyroelectric current measurements.
5 pages, 3 figures