Premium
Positive Temperature Coefficient of Resistance Effect in Heavily Niobium‐Doped Barium Titanate by the Growth of the Double‐Twinned Seeds
Author(s) -
Park BoKyung,
Lee JongHeun,
Kim DohYeon,
Hwang gMoon
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb01077.x
Subject(s) - niobium , materials science , barium titanate , microstructure , doping , electrical resistivity and conductivity , temperature coefficient , grain growth , strontium titanate , grain size , mineralogy , composite material , metallurgy , nanotechnology , ceramic , optoelectronics , chemistry , thin film , electrical engineering , engineering
Positive temperature coefficient of resistivity (PTCR) was attained in heavily niobium‐doped BaTiO 3 through the addition of BaTiO 3 seed particles. The seed particles containing a double twin grew during heat treatment, and a uniform microstructure composed of large, coarse grains was obtained. The incorporation of niobium into the grain via grain growth probably caused the semiconducting and PTCR character of the niobium‐doped BaTiO 3 .