TY - JOUR
T1 - Direct observation of the double Schottky barrier in niobium-doped barium titanate by the charge-collection current method
AU - Kataoka, Noriyasu
AU - Hayashi, Katsuro
AU - Yamamoto, Takahisa
AU - Sugawara, Yoshihiro
AU - Ikuhara, Yuichi
AU - Sakuma, Taketo
PY - 1998/7
Y1 - 1998/7
N2 - Charge-collection (CC) current was measured at a single grain boundary, which exhibited positive temperature coefficient of resistivity (PTCR) effects, in 0.1-mol%-Nb-doped BaTiO3. The CC current systematically reversed across the grain boundary above the Curie point, which indicated the presence of a double Schottky barrier (DSB) at the grain boundary. In contrast, the CC current was constant across the grain boundary below the Curie temperature. The result obtained from the CC current measurement agrees with the classical DSB model in donordoped BaTiO3, indicating the PTCR effects.
AB - Charge-collection (CC) current was measured at a single grain boundary, which exhibited positive temperature coefficient of resistivity (PTCR) effects, in 0.1-mol%-Nb-doped BaTiO3. The CC current systematically reversed across the grain boundary above the Curie point, which indicated the presence of a double Schottky barrier (DSB) at the grain boundary. In contrast, the CC current was constant across the grain boundary below the Curie temperature. The result obtained from the CC current measurement agrees with the classical DSB model in donordoped BaTiO3, indicating the PTCR effects.
UR - http://www.scopus.com/inward/record.url?scp=0032118604&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032118604&partnerID=8YFLogxK
U2 - 10.1111/j.1151-2916.1998.tb02576.x
DO - 10.1111/j.1151-2916.1998.tb02576.x
M3 - Article
AN - SCOPUS:0032118604
SN - 0002-7820
VL - 81
SP - 1961
EP - 1963
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 7
ER -