Search Results - "Nagata, Hajime"

Current status and prospects of lead-free piezoelectric ceramics by Takenaka, Tadashi, Nagata, Hajime

“…Dielectric, ferroelectric and piezoelectric properties of perovskite ferroelectric and bismuth layer-structured ferroelectric (BLSF) ceramics are described as…”
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Quenching effects on electrical properties of Cu-doped (Bi1/2Na1/2)TiO3-based solid solution ceramics by Harada, Seiji, Takagi, Yuka, Nagata, Hajime, Takenaka, Tadashi

“…Quenching effects on electrical and piezoelectric properties were investigated for Cu-doped (Bi 1/2 Na 1/2 )TiO 3 (BNT)-based solid solution systems, 0.90(Bi…”
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Large electrostrain near the phase transition temperature of (Bi0.5Na0.5)TiO3–SrTiO3 ferroelectric ceramics by Hiruma, Yuji, Imai, Yoshitaka, Watanabe, Yoshinori, Nagata, Hajime, Takenaka, Tadashi

“…( 1 - x ) ( Bi 0.5 Na 0.5 ) Ti O 3 – x Sr Ti O 3 (abbreviated as BNST100x) was prepared by a conventional ceramic fabrication process. The depolarization…”
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Current Developments and Prospective of Lead-Free Piezoelectric Ceramics by Takenaka, Tadashi, Nagata, Hajime, Hiruma, Yuji

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Local structure and phase transitions of KNbO3 by Yoneda, Yasuhiro, Ohara, Koji, Nagata, Hajime

“…Bond length distributions of nearest- and higher-neighbor distances in KNbO3, which is the parent compound of lead-free piezoelectric materials, have been…”
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Effects of quenching on bending strength and piezoelectric properties of (Bi0.5Na0.5)TiO3 ceramics by Takagi, Yuka, Nagata, Hajime, Takenaka, Tadashi

“…Lead-free piezoelectric bismuth sodium titanate (Bi 0.5 Na 0.5 )TiO 3 (BNT) ceramics were prepared by quenching and the correlation among a depolarization…”
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Phase Transition Temperatures and Piezoelectric Properties of (Bi1/2Na1/2)TiO3-and (Bi1/2K1/2)TiO3-Based Bismuth Perovskite Lead-Free Ferroelectric Ceramics by Takenaka, T., Nagata, H., Hiruma, Y.

“…The phase transition temperatures and the dielectric, ferroelectric, and piezoelectric properties of bismuth perovskite lead-free ferroelectric ceramics such…”
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Mn-Doped CaBi4Ti4O15/Pb(Zr,Ti)O3 Ultrasonic Transducers for Continuous Monitoring at Elevated Temperatures by Kobayashi, Makiko, Kibe, Taiga, Nagata, Hajime

“…Continuous ultrasonic in-situ monitoring for industrial applications is difficult owing to the high operating temperatures in industrial fields. It is expected…”
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Large Piezoelectric Constant and High Curie Temperature of Lead-Free Piezoelectric Ceramic Ternary System Based on Bismuth Sodium Titanate-Bismuth Potassium Titanate-Barium Titanate near the Morphotropic Phase Boundary by Nagata, Hajime, Yoshida, Masaki, Makiuchi, Yoichi, Takenaka, Tadashi

“…A lead-free piezoelectric ceramic ternary system based on bismuth sodium titanate, (Bi1/2Na1/2)TiO3 (BNT) - bismuth potassium titanate (Bi1/2K1/2)TiO3…”
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Piezoelectric properties in (K0.5Bi0.5)TiO 3-(Na0.5Bi0.5)TiO3-BaTiO 3 lead-free ceramics by Zhang, Shujun, Shrout, Thomas R., Nagata, Hajime, Hiruma, Yuji, Takenaka, Tadashi

“…Lead-free piezoelectric ceramics with compositions around the morphotropic phase boundary (MPB) x(Na 0.5 Bi 0.5 )TiO 3-y (K 0.5 Bi 0.5 )TiO 3 -zBaTiO 3 [x + y…”
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Fabrication and Electrical Properties of Multilayer Ceramic Actuator Using Lead-Free (Bi1/2K1/2)TiO3 by Nagata, Hajime, Tabuchi, Kazuya, Takenaka, Tadashi

“…A prototype of a multilayer actuator (MLA) was fabricated using (Bi 1/2 K 1/2 )TiO 3 (BKT) ceramics as active layers and Ag--Pd ($7:3$) as inner electrodes…”
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Additive effects on electrical properties of (Bi1/2Na1/2)TiO3 ferroelectric ceramics by NAGATA, Hajime, TAKENAKA, Tadashi

“…The microstructure and dielectric, ferroelectric and piezoelectric properties of bismuth sodium titanate (Bi1/2Na1/2)TiO3 (BNT) were studied in order to…”
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Mechanical bending strength of (Bi0.5Na0.5) TiO3-based lead-Free piezoelectric ceramics by Takahashi, Hiroaki, Nagata, Hajime, Takenaka, Tadashi

“…(Bi0.5Na0.5)TiO3 [BNT] is expected as one of candidate lead-free materials because these ceramics show relatively good high-power piezoelectric properties. In…”
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Depolarization temperature and piezoelectric properties of (Bi1/2Na1/2)TiO3–(Bi1/2Li1/2)TiO3–(Bi1/2K1/2)TiO3 lead-free piezoelectric ceramics by Hiruma, Yuji, Nagata, Hajime, Takenaka, Tadashi

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Fabrication and Electrical Properties of Potassium Niobate Ferroelectric Ceramics by Nagata, Hajime, Matsumoto, Kenji, Hirosue, Tadayuki, Hiruma, Yuji, Takenaka, Tadashi

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Local structure analysis of Bi0.5Na0.5TiO3 by Yoneda, Yasuhiro, Nagata, Hajime, Takenaka, Tadashi

“…The potential lead-free piezoelectric material bismuth sodium titanate, Bi 0.5 Na 0.5 TiO 3 (BNT), was investigated by means of high-energy synchrotron X-ray…”
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Fabrication and Piezoelectric Properties of Textured (Bi1/2K1/2)TiO3 Ferroelectric Ceramics by Nagata, Hajime, Saitoh, Masahiro, Hiruma, Yuji, Takenaka, Tadashi

“…Textured (Bi 1/2 K 1/2 )TiO 3 (BKT) ceramics were prepared by a reactive templated grain growth (RTGG) method to improve their piezoelectric properties. Also,…”
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High-Power Piezoelectric Characteristics of Bi4Ti3O12--SrBi4Ti4O15-Based Ferroelectric Ceramics by Noumura, Yoji, Hiruma, Yuji, Nagata, Hajime, Takenaka, Tadashi

“…The high-power piezoelectric characteristics of lead-free piezoelectric ceramics based on a mixed bismuth layer-structured ferroelectric, Bi 4 Ti 3 O 12 --SrBi…”
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Piezoelectric Properties of Pure and Mn-doped Potassium Niobate Ferroelectric Ceramics by Matsumoto, Kenji, Hiruma, Yuji, Nagata, Hajime, Takenaka, Tadashi

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High-Power Piezoelectric Characteristics at Continuous Driving of Bi4Ti3O12--SrBi4Ti4O15-Based Ferroelectric Ceramics by Noumura, Yoji, Hiruma, Yuji, Nagata, Hajime, Takenaka, Tadashi

“…The high-power piezoelectric characteristics at continuous driving were studied on lead-free piezoelectric ceramics of a mixed bismuth layer-structured…”
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