Enhanced piezoelectric response of BaTiO 3 -KNbO 3 composites

The piezoelectric response of solvothermally synthesized BaTiO 3 (BT)-KNbO 3 (KN) composites (the nominal BT/KN ratio was 1) with distinct interfaces was investigated. The x-ray diffraction pattern showed two distinct peaks began to merge into a singular broad peak at a two-theta position between (2...

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Published in:Applied physics letters 2011-11, Vol.99 (20), p.202902-202902-3
Main Authors: Fujii, Ichiro, Shimizu, Shigehito, Yamashita, Kenta, Nakashima, Kouichi, Kumada, Nobuhiro, Moriyoshi, Chikako, Kuroiwa, Yoshihiro, Fujikawa, Yoshinori, Tanaka, Daisuke, Furukawa, Masahito, Wada, Satoshi
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container_end_page 202902-3
container_issue 20
container_start_page 202902
container_title Applied physics letters
container_volume 99
creator Fujii, Ichiro
Shimizu, Shigehito
Yamashita, Kenta
Nakashima, Kouichi
Kumada, Nobuhiro
Moriyoshi, Chikako
Kuroiwa, Yoshihiro
Fujikawa, Yoshinori
Tanaka, Daisuke
Furukawa, Masahito
Wada, Satoshi
description The piezoelectric response of solvothermally synthesized BaTiO 3 (BT)-KNbO 3 (KN) composites (the nominal BT/KN ratio was 1) with distinct interfaces was investigated. The x-ray diffraction pattern showed two distinct peaks began to merge into a singular broad peak at a two-theta position between (200) and (002) tetragonal-related peaks of BT. The transmission electron microscopy observation showed a heteroepitaxial interface region between BT single-crystal particles and deposited KN crystals. The large-field piezoelectric constant was 136pC/N, which was three times larger than that of a sintered 0.5BT-0.5KN composite. The enhanced piezoelectric response was attributed to the strained epitaxial interface region.
doi_str_mv 10.1063/1.3662397
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title Enhanced piezoelectric response of BaTiO 3 -KNbO 3 composites
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