Gigantic magnetocapacitance and magnetostriction in ferroelectric antiferromagnet GdMnO/sub 3/

In this work, gigantic magnetocapacitance effect and magnetostriction in GdMnO/sub 3/ were reported to demonstrate the direct evidence for strong mutual coupling among spin, localized charge, and lattice degrees of freedom. The results clearly indicate a direct correlation between the magnetic and dielectric properties of the material. Also, it was concluded that magnetostriction is not a major origin of the observed gigantic magnetocapacitance. The observed coupling among magnetic, dielectric, and lattice structural properties may bring a possible multifunctional device in the future.