Low temperature synthesis and characterization of lanthanide-doped BaTiO3 nanocrystals

Chem Commun (Camb). 2014 Apr 4;50(26):3480-3. doi: 10.1039/c3cc49575b. Epub 2014 Feb 19.

Abstract

The vapor diffusion sol-gel (VDSG) method was employed for the room-temperature synthesis of ~10 nm, aliovalently doped 0.4, 0.8, and 1.6 mol% La:BaTiO3 and 0.4, 0.6, and 1.2 mol% Dy:BaTiO3 nanocrystals. Maximum ensemble relative permittivities of 176 and 208 were observed in the 0.8 mol% La:BaTiO3 and the 1.2 mol% Dy:BaTiO3 nanocrystals, respectively, relative to 89 for undoped BaTiO3 (at 1 MHz, 25 °C) due to local disorder induced by aliovalent substitution.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Barium Compounds / chemistry*
  • Cold Temperature*
  • Lanthanoid Series Elements / chemistry*
  • Microscopy, Electron, Transmission
  • Nanoparticles*
  • Titanium / chemistry*

Substances

  • Barium Compounds
  • Lanthanoid Series Elements
  • barium titanate(IV)
  • Titanium