title: Coexistence of weak ferromagnetism and ferroelectricity in the high pressure LiNbO3-type phase of FeTiO3.
abstract: We report the magnetic and electrical characteristics of polycrystalline FeTiO_{3} synthesized at high pressure that is isostructural with acentric LiNbO_{3} (LBO). Piezoresponse force microscopy, optical second harmonic generation, and magnetometry demonstrate ferroelectricity at and below room temperature and weak ferromagnetism below approximately 120 K. These results validate symmetry-based criteria and first-principles calculations of the coexistence of ferroelectricity and weak ferromagnetism in a series of transition metal titanates crystallizing in the LBO structure.
authors: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors: T
authors: T
authors: Varga
authors: A
authors: A
authors: Kumar
authors: E
authors: E
authors: Vlahos
authors: S
authors: S
authors: Denev
authors: M
authors: M
authors: Park
authors: S
authors: S
authors: Hong
authors: T
authors: T
authors: Sanehira
authors: Y
authors: Y
authors: Wang
authors: C J
authors: CJ
authors: Fennie
authors: S K
authors: SK
authors: Streiffer
authors: X
authors: X
authors: Ke
authors: P
authors: P
authors: Schiffer
authors: V
authors: V
authors: Gopalan
authors: J F
authors: JF
authors: Mitchell