Title :
Gigantic magnetocapacitance and magnetostriction in ferroelectric antiferromagnet GdMnO3
Author :
Noda, K. ; Nakamura, Shigenari ; Nagayama, J. ; Kuwahara, H.
Author_Institution :
Sophia Univ., Tokyo, Japan
Abstract :
In this work, gigantic magnetocapacitance effect and magnetostriction in GdMnO3 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.
Keywords :
antiferromagnetic materials; capacitance; crystal structure; ferroelectric materials; gadolinium compounds; magnetoelectric effects; magnetostriction; permittivity; GdMnO3; dielectric properties; ferroelectric antiferromagnet; gigantic magnetocapacitance; lattice degrees of freedom; lattice structural properties; localized charge; magnetic properties; magnetostriction; mutual coupling; Antiferromagnetic materials; Dielectric materials; Ferroelectric materials; Lattices; Magnetic devices; Magnetic materials; Magnetic properties; Magnetostriction; Magnetostrictive devices; Mutual coupling;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464374
