TY - JOUR
T1 - Conductor-insulator transition-like phenomenon in thin BaTiO3 film heterostructures
AU - Kaku, Shigeru
AU - Miyauchi, Satoshi
AU - Arai, Take
AU - Watanabe, Yukio
N1 - Funding Information:
Y. Watanabe is supported partly by Toyota research Institute and S. Kaku is supported by JSPS Research Fellowships for Young Scientists.
PY - 2008
Y1 - 2008
N2 - The thin films are generally under stress from the substrate. Therefore, we relaxed the stress from a substrate and created almost stress free state. We have investigated the conduction characteristic of such BaTiO3 thin films. We have found the phenomenon in which the conductivity changes rapidly when temperature was changed, and the PTCR like effect that the conductivity decreased near curie temperature. As ferroelectrics are a class of insulators that possesses spontaneous polarization, we regard these phenomena as a new conductor-insulator transition.
AB - The thin films are generally under stress from the substrate. Therefore, we relaxed the stress from a substrate and created almost stress free state. We have investigated the conduction characteristic of such BaTiO3 thin films. We have found the phenomenon in which the conductivity changes rapidly when temperature was changed, and the PTCR like effect that the conductivity decreased near curie temperature. As ferroelectrics are a class of insulators that possesses spontaneous polarization, we regard these phenomena as a new conductor-insulator transition.
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U2 - 10.1080/00150190802384294
DO - 10.1080/00150190802384294
M3 - Conference article
AN - SCOPUS:75449100527
SN - 0015-0193
VL - 370
SP - 39
EP - 45
JO - Ferroelectrics
JF - Ferroelectrics
IS - 1 PART 4
T2 - 11th European Meeting on Ferroelectricity, EMF-2007
Y2 - 3 September 2007 through 7 September 2007
ER -