The crystal structure of hexagonal barium titanate

Physical structure of P(VDF-TrFE)/barium titanate submicron composites

Strain-Induced Extrinsic High-Temperature Ferromagnetism in the Fe-Doped Hexagonal Barium Titanate

Diluted magnetic semiconductors possessing intrinsic static magnetism at high temperatures represent a promising class of multifunctional materials with high application potential in spintronics and magneto-optics. In the hexagonal Fe-doped diluted magnetic oxide, 6H-BaTiO3-δ, room-temperature ferromagnetism has been previously reported. Ferromagnetism is broadly accepted as an intrinsic proper...

Ferroelectric Lead Zirconate Titanate and Barium Titanate Nanotubes

Wetting of the pore walls of porous templates is a simple and convenient method to prepare nanotubes. Ferroelectric lead zirconate titanate and barium titanate nanotubes were fabricated by wetting of porous silicon templates of polymeric precursors. The ferroand piezoelectric properties of an individual ferroelectric either of a PZT or a BaTiO3 nanotube were electrically characterized by measur...

Silent soft mode in hexagonal barium titanate observed by hyper-Raman scattering.

In a recent paper' Inoue et al. discussed a soft optical phonon that drives the second-order phase transition from hexagonal BaTi03, space group P63/mme (D6t, ), to a lower-symmetry structure at T, =222 K. The new phase is not ferroelectric and its structure is not known. The soft mode is Raman and infrared inactive and therefore is a so-called "silent" mode. Using hyper-Raman scattering, Inoue...

Morphology-controlled synthesis of barium titanate nanostructures.

This study reports the synthesis of morphology-controlled BaTiO(3) nanostructures such as spherical, cube-shaped and rod-shaped BaTiO(3) using a molten-salt synthesis method. This method synthesized products from a reaction of BaO/BaCO(3) and TiO(2) with a eutectic mixture of NaCl-KCl flux at 700 degrees C for 1 h. The experiment used powder X-ray diffraction, field emission scanning electron m...