PerspectiveMultiferroics

Room-temperature magnetoelastic coupling

See allHide authors and affiliations

Science  07 Feb 2020:
Vol. 367, Issue 6478, pp. 627-628
DOI: 10.1126/science.aba6642

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Summary

Ferromagnetism, records of which date back to the 6th century BCE, is regarded as an ancient twin of ferroelectricity, which was not discovered until 1920. Ferromagnets, which have permanent magnetic moments, and ferroelectrics, which have a spontaneous electric polarization, both have domain structures and a Curie temperature, TC, above which materials lose their ferroic orders. Magnetoelectric coupling describes the multiferroic response of the magnetization to the electric field and the polarization to the magnetic field in the same material (see the figure). On page 671 of this issue, Long et al. (1) report magnetoelectric coupling in paramagnetic molecular ferroelectrics at room temperature, in which the responses to the magnetic field and the modifications of the ferroelectricity have the same chemical origin in a chemical complex.

View Full Text

Stay Connected to Science