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Keisuke Yazawa
Keisuke Yazawa
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Year
Reduced coercive field in epitaxial thin film of ferroelectric wurtzite Al0. 7Sc0. 3N
K Yazawa, D Drury, A Zakutayev, GL Brennecka
Applied Physics Letters 118 (16), 2021
462021
High-Temperature Ferroelectric Behavior of Al0.7Sc0.3N
D Drury, K Yazawa, A Zakutayev, B Hanrahan, G Brennecka
Micromachines 13 (6), 887, 2022
272022
Growth of epitaxial KNbO3 thick films by hydrothermal method and their characterization
M Ishikawa, K Yazawa, T Fujisawa, S Yasui, T Yamada, T Hasegawa, ...
Japanese Journal of Applied Physics 48 (9S1), 09KA14, 2009
272009
Understanding Reproducibility of Sputter‐Deposited Metastable Ferroelectric Wurtzite Al0.6Sc0.4N Films Using In Situ Optical Emission Spectrometry
D Drury, K Yazawa, A Mis, K Talley, A Zakutayev, GL Brennecka
physica status solidi (RRL)–Rapid Research Letters 15 (5), 2100043, 2021
222021
Piezoelectric Properties of {100}-Oriented Epitaxial BiCoO3–BiFeO3 Films Measured Using Synchrotron X-ray Diffraction
S Yasui, O Sakata, M Nakajima, S Utsugi, K Yazawa, T Yamada, ...
Japanese Journal of Applied Physics 48 (9S1), 09KD06, 2009
212009
An ultra-low noise photoconductive film image sensor with a high-speed column feedback amplifier noise canceller
M Ishii, S Kasuga, K Yazawa, Y Sakata, T Okino, Y Sato, J Hirase, ...
2013 Symposium on VLSI Circuits, C8-C9, 2013
192013
Effect of Film Thickness and Crystal Orientation on the Constituent Phase in Epitaxial BiFeO3–BiCoO3 Films Grown on SrTiO3 Substrates
S Yasui, K Yazawa, T Yamada, K Nishida, H Uchida, M Azuma, ...
Japanese Journal of Applied Physics 49 (9S), 09MB04, 2010
172010
Local chemical origin of ferroelectric behavior in wurtzite nitrides
K Yazawa, JS Mangum, P Gorai, GL Brennecka, A Zakutayev
Journal of Materials Chemistry C 10 (46), 17557-17566, 2022
162022
A Landau–Devonshire analysis of strain effects on ferroelectric Al1− xScxN
K Yazawa, A Zakutayev, GL Brennecka
Applied Physics Letters 121 (4), 2022
152022
Composition dependence of crystal structure and electrical properties for epitaxial films of Bi (Zn1/2Ti1/2) O3–BiFeO3 solid solution system
K Yazawa, S Yasui, H Morioka, T Yamada, H Uchida, A Gruverman, ...
Journal of the Ceramic Society of Japan 118 (1380), 659-663, 2010
142010
Anomalously abrupt switching of wurtzite-structured ferroelectrics: simultaneous non-linear nucleation and growth model
K Yazawa, J Hayden, JP Maria, W Zhu, S Trolier-McKinstry, A Zakutayev, ...
Materials Horizons 10 (8), 2936-2944, 2023
122023
Solid-state imaging apparatus
K Yazawa, M Ishii, Y Hirose, Y Kato, Y Matsunaga
US Patent 9,554,067, 2017
122017
Origin of grain size effects on voltage‐driven ferroelastic domain evolution in polycrystalline tetragonal lead zirconate titanate thin film
K Yazawa, H Uchida, JE Blendell
Advanced Functional Materials 30 (9), 1909100, 2020
92020
Piezoelectric material
M Kubota, T Ifuku, H Funakubo, K Yazawa, H Uchida, T Iijima, BY Lee
US Patent 8,980,117, 2015
92015
Unusual 90° domain structure in (2/3) Bi (Zn1/2Ti1/2) O3-(1/3) BiFeO3 epitaxial films with giant 22% tetragonal distortion
S Yasui, K Yazawa, M Matsushima, T Yamada, H Morioka, H Uchida, ...
Applied Physics Letters 103 (4), 2013
92013
Piezoelectric material and devices using the same
M Kubota, K Miura, H Yabuta, T Watanabe, J Hayashi, H Funakubo, ...
US Patent 9,082,975, 2015
82015
MOCVD growth and characterization of BiFeO3–Bi (Zn1/2Ti1/2) O3 ferroelectric films
K Yazawa, S Yasui, M Matsushima, H Uchida, H Funakubo
Materials Science and Engineering: B 173 (1-3), 14-17, 2010
82010
Barkhausen noise analysis of thin film ferroelectrics
K Yazawa, B Ducharne, H Uchida, H Funakubo, JE Blendell
Applied Physics Letters 117 (1), 2020
62020
High-speed and high-power ferroelectric switching current measurement instrument for materials with large coercive voltage and remanent polarization
K Yazawa, A Zakutayev, GL Brennecka
Sensors 22 (24), 9659, 2022
52022
Phys. status solidi–Rapid Res
D Drury, K Yazawa, A Mis, K Talley, A Zakutayev, GL Brennecka
Lett 15, 2100043, 2021
42021
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