Takao Shimizu

发表

Local C–V mapping for ferroelectrics using scanning nonlinear dielectric microscopy

H. Funakubo, Yasuo Cho, Y. Hiranaga, 2020, Journal of Applied Physics.

Impact of Deposition Temperature on Crystal Structure and Ferroelectric Properties of (Al 1− x Sc x )N Films Prepared by Sputtering Method

H. Funakubo, Takao Shimizu, M. Akiyama, 2021, physica status solidi (a).

Lamellar-like nanostructure in a relaxor ferroelectrics Pb(Mg1/3Nb2/3)O3

H. Moriwake, Takao Shimizu, Yukio Sato, 2020, Journal of Materials Science.

Time response demonstration of in situ lattice deformation under an applied electric field by synchrotron-based time-resolved X-ray diffraction in polar-axis-oriented epitaxial Pb(Zr,Ti)O3 film

H. Funakubo, N. Oshima, O. Sakata, 2018, Japanese Journal of Applied Physics.

Crystal structure and magnetism in κ-Al2O3-type AlxFe2-xO3 films on SrTiO3(111)

S. Yasui, M. Itoh, T. Taniyama, 2017 .

Large thermal hysteresis of ferroelectric transition in HfO2-based ferroelectric films

H. Funakubo, O. Sakata, T. Mimura, 2021 .

Ferroelectricity in YO1.5-HfO2 films around 1 μm in thickness

H. Funakubo, T. Mimura, Takao Shimizu, 2019, Applied Physics Letters.

Effects of heat treatment and in situ high-temperature X-ray diffraction study on the formation of ferroelectric epitaxial Y-doped HfO2 film

H. Funakubo, O. Sakata, T. Mimura, 2019, Japanese Journal of Applied Physics.

Crystal structure and dielectric/ferroelectric properties of CSD-derived HfO2-ZrO2 solid solution films

H. Funakubo, Takao Shimizu, T. Shiraishi, 2017 .

Effect of the film thickness on the crystal structure and ferroelectric properties of (Hf0.5Zr0.5)O2 thin films deposited on various substrates

H. Funakubo, O. Sakata, Takao Shimizu, 2017 .

Impact of mechanical stress on ferroelectricity in (Hf0.5Zr0.5)O2 thin films

H. Funakubo, O. Sakata, Takao Shimizu, 2016 .

Growth of (111)-oriented epitaxial and textured ferroelectric Y-doped HfO2 films for downscaled devices

H. Funakubo, O. Sakata, Takao Shimizu, 2016 .

Comprehensive Study on the Kinetic Formation of the Orthorhombic Ferroelectric Phase in Epitaxial Y-Doped Ferroelectric HfO2 Thin Films

H. Funakubo, T. Mimura, Takao Shimizu, 2021 .

Thickness- and orientation- dependences of Curie temperature in ferroelectric epitaxial Y doped HfO2 films

H. Funakubo, O. Sakata, T. Mimura, 2020, Japanese Journal of Applied Physics.

Structural Origin of Temperature-Dependent Ferroelectricity

H. Funakubo, U. Schroeder, Takao Shimizu, 2019, Ferroelectricity in Doped Hafnium Oxide: Materials, Properties and Devices.

Fabrication of ferroelectric Fe doped HfO2 epitaxial thin films by ion-beam sputtering method and their characterization

H. Funakubo, Takao Shimizu, T. Shiraishi, 2018, Japanese Journal of Applied Physics.

Study on the effect of heat treatment conditions on metalorganic-chemical-vapor-deposited ferroelectric Hf0.5Zr0.5O2 thin film on Ir electrode

Takahiro Oikawa, Takao Shimizu, Takao Shimizu, 2014 .

Contribution of oxygen vacancies to the ferroelectric behavior of Hf0.5Zr0.5O2 thin films

H. Funakubo, A. Gruverman, Takao Shimizu, 2015 .

Room-temperature deposition of ferroelectric HfO2-based films by the sputtering method

H. Funakubo, T. Mimura, Takao Shimizu, 2020 .

Growth of epitaxial orthorhombic YO1.5-substituted HfO2 thin film

H. Funakubo, Takao Shimizu, T. Kiguchi, 2015 .

Thickness dependence of phase stability in epitaxial (HfxZr1−x)O2 films

H. Funakubo, O. Sakata, T. Mimura, 2021, Physical Review Materials.

Epitaxial ferroelectric Y-doped HfO2 film grown by the RF magnetron sputtering

H. Funakubo, T. Mimura, Takao Shimizu, 2018, Japanese Journal of Applied Physics.

Thickness-dependent crystal structure and electric properties of epitaxial ferroelectric Y2O3-HfO2 films

H. Funakubo, O. Sakata, T. Mimura, 2018, Applied Physics Letters.

Epitaxial growth of YO1.5 doped HfO2 films on (100) YSZ substrates with various concentrations

H. Funakubo, Takao Shimizu, Kiliha Katayama, 2017 .

The demonstration of significant ferroelectricity in epitaxial Y-doped HfO2 film

Osami Sakata, Takao Shimizu, Hiroshi Funakubo, 2016, Scientific Reports.

Stabilizing the ferroelectric phase in doped hafnium oxide

Christoph Adelmann, Thomas Mikolajick, Michael J. Hoffmann, 2015 .

Ferroelectricity in HfO2 and related ferroelectrics

Takao Shimizu, Takao Shimizu, 2018, Journal of the Ceramic Society of Japan.

Observation of size-dependent features in the photoluminescence of zinc oxide nanocrystallites by near-field ultraviolet spectroscopy

M. Ueda, Takao Shimizu, M. Ohtsu, 2002 .

Mechanism of polarization switching in wurtzite-structured zinc oxide thin films

A. Kuwabara, C. Fisher, H. Moriwake, 2016 .

Low Temperature Preparation of KNbO 3 Films by Hydrothermal Method and Their Characterization

M. Kurosawa, H. Funakubo, Takao Shimizu, 2014 .

Growth of epitaxial (K, Na)NbO3 films with various orientations by hydrothermal method and their properties

M. Kurosawa, H. Funakubo, Takao Shimizu, 2019, Japanese Journal of Applied Physics.

Crystal structure and compositional analysis of epitaxial (K 0.56 Na 0.44 )NbO 3 films prepared by hydrothermal method

M. Kurosawa, H. Funakubo, N. Kumada, 2016 .

Crystal Structure Analysis of Hydrothermally Synthesized Epitaxial (KxNa1-x)NbO3 Films

M. Kurosawa, H. Funakubo, Takeshi Kobayashi, 2013 .

Dynamic observation of ferroelectric domain switching using scanning nonlinear dielectric microscopy

H. Funakubo, Yasuo Cho, Y. Hiranaga, 2017 .

Lead- and alkali-metal-free BaTiO3–Bi(Mg0.5Ti0.5)O3–BiFeO3 solid-solution thin films with high dielectric constant prepared on Si substrates by solution-based method

H. Funakubo, Takao Shimizu, H. Uchida, 2014 .

Composition dependencies of crystal structure and electrical properties of epitaxial tetragonal (Bi, Na)TiO3–BaTiO3 films grown on (100)cSrRuO3//(100)SrTiO3 substrates by pulsed laser depositions

H. Funakubo, Takao Shimizu, S. Yoshimura, 2021, Journal of Applied Physics.

Temperature dependence on the domain structure of epitaxial PbTiO3 films grown on single crystal substrates with different lattice parameters

H. Funakubo, Yoshitaka Ehara, Takao Shimizu, 2020, Japanese Journal of Applied Physics.

Ferroelastic domain motion by pulsed electric field in (111)/(111¯) rhombohedral epitaxial Pb(Zr0.65Ti0.35)O3 thin films: Fast switching and relaxation

H. Funakubo, Yoshitaka Ehara, S. Yasui, 2019, Physical Review B.

In-situ observation of ultrafast 90° domain switching under application of an electric field in (100)/(001)-oriented tetragonal epitaxial Pb(Zr0.4Ti0.6)O3 thin films

H. Funakubo, Yoshitaka Ehara, S. Yasui, 2017, Scientific Reports.

Electric‐Field‐Induced Ferroelectricity in 5%Y‐doped Hf0.5Zr0.5O2: Transformation from the Paraelectric Tetragonal Phase to the Ferroelectric Orthorhombic Phase

H. Funakubo, O. Sakata, T. Mimura, 2021, physica status solidi (RRL) – Rapid Research Letters.

Composition Dependence of Crystal Structures and Electrical Properties of Ca-Mg-Si Films Prepared by Sputtering

H. Funakubo, Takao Shimizu, H. Uchida, 2020, Journal of Electronic Materials.

Semitransparent properties of an intrinsic silicon wafer and its application to an optical fiber temperature sensor

T. Iuchi, Takao Shimizu, D. Terada, 2016, 2016 55th Annual Conference of the Society of Instrument and Control Engineers of Japan (SICE).

Domain structure transition from two to three dimensions in tensile strained (100)/(001)-oriented epitaxial tetragonal PZT film

H. Funakubo, O. Sakata, Takao Shimizu, 2018, Applied Physics Letters.

Epitaxial Crystal Growth of Bismuth Silicate Driven by Fluorite-like Layers

H. Funakubo, Takao Shimizu, M. Kodera, 2020 .

Dependency of direct and inverse transverse piezoelectric properties on composition in self-polarized epitaxial (KxNa1−x)NbO3 films grown via a hydrothermal method

M. Kurosawa, H. Funakubo, T. Yoshimura, 2020, Japanese Journal of Applied Physics.

Effects of starting materials on the deposition behavior of hydrothermally synthesized {1 0 0} -oriented epitaxial (K,Na)NbO3 thick films and their ferroelectric and piezoelectric properties

M. Kurosawa, H. Funakubo, N. Kumada, 2019, Journal of Crystal Growth.

Ferroelectricity in wurtzite structure simple chalcogenide

K. Fujimura, A. Kuwabara, C. Fisher, 2014 .

Enhancement of crystal anisotropy and ferroelectricity by decreasing thickness in (Al,Sc)N films

H. Funakubo, Yoshitaka Ehara, S. Yasui, 2022, Journal of the Ceramic Society of Japan.

Mechanism for suppression of ferroelectricity in Cd1−xCaxTiO3

H. Moriwake, M. Itoh, Takao Shimizu, 2011 .

Ferroelectric phase transition of Cd 2 Nb 2 O 7 studied by Raman scattering

M. Itoh, M. Tachibana, H. Kawaji, 2008 .

Domain structure transition in compressively strained (100)/(001) epitaxial tetragonal PZT film

H. Funakubo, Yoshitaka Ehara, O. Sakata, 2021 .

Electric-field-induced lattice distortion in epitaxial BiFeO3 thin films as determined by in situ time-resolved x-ray diffraction

H. Funakubo, O. Sakata, Takao Shimizu, 2017 .

Formation of (111) orientation-controlled ferroelectric orthorhombic HfO2 thin films from solid phase via annealing

H. Funakubo, O. Sakata, T. Mimura, 2016 .

Preparation of 1 μm thick Y-doped HfO2 ferroelectric films on (111)Pt/TiO x /SiO2/(001)Si substrates by a sputtering method and their ferroelectric and piezoelectric properties

H. Funakubo, T. Mimura, Takao Shimizu, 2021 .

Lattice deformation and phase transition of aluminum nitride studied by density functional theory calculations

Takao Shimizu, N. Ohashi, Kota Hasegawa, 2022, Journal of the Ceramic Society of Japan.

Preparation of preferentially (111)-oriented Mg2Si thin films on (001)Al2O3 and (100)CaF2 substrates and their thermoelectric properties

H. Funakubo, Takao Shimizu, H. Uchida, 2017 .

High temperature stability of the dielectric and insulating properties of Ca(Ti, Zr)SiO5 ceramics

H. Funakubo, T. Iijima, S. Yasui, 2016 .

Simultaneous achievement of high dielectric constant and low temperature dependence of capacitance in (111)-oriented BaTiO3-Bi(Mg0.5Ti0.5)O3-BiFeO3 solid solution thin films

H. Funakubo, Takao Shimizu, H. Uchida, 2016 .

Comparative study of phase transitions in BaTiO3 thin films grown on (001)- and (110)-oriented SrTiO3 substrate

M. Itoh, T. Taniyama, Takao Shimizu, 2013, Journal of physics. Condensed matter : an Institute of Physics journal.

Structural Modification and Domain Structure in a BaTiO3 Film on (110) SrTiO3

M. Itoh, T. Taniyama, Takao Shimizu, 2013 .

Demonstration of ferroelectricity in ScGaN thin film using sputtering method

H. Funakubo, Takao Shimizu, T. Shiraishi, 2021, Applied Physics Letters.

Thermally stable dielectric responses in uniaxially (001)-oriented CaBi4Ti4O15 nanofilms grown on a Ca2Nb3O10− nanosheet seed layer

M. Osada, H. Funakubo, T. Sasaki, 2016, Scientific reports.

Large Electromechanical Responses Driven by Electrically Induced Dense Ferroelastic Domains: Beyond Morphotropic Phase Boundaries

H. Funakubo, Yoshitaka Ehara, Takao Shimizu, 2020 .

Fabrication and characterization of ReO3-type dielectric films

H. Moriwake, H. Funakubo, Takao Shimizu, 2020 .

Ferroelectric properties of epitaxial Bi2SiO5 thin films grown on SrTiO3 substrates with various orientations

H. Funakubo, Takao Shimizu, M. Kodera, 2019, Japanese Journal of Applied Physics.

Formation of polar phase in Fe-doped ZrO2 epitaxial thin films

H. Funakubo, Takao Shimizu, T. Shiraishi, 2018 .

Orientation control and domain structure analysis of {100}-oriented epitaxial ferroelectric orthorhombic HfO2-based thin films

H. Funakubo, Shogo Nakamura, O. Sakata, 2016 .

Domain structure of tetragonal Pb(Zr,Ti)O3 nanorods and its size dependence

H. Funakubo, O. Sakata, Takao Shimizu, 2015 .

Effect of in-plane tensile strain in (100)/(001)-oriented epitaxial PbTiO3 films on their phase transition temperature and tetragonal distortion

H. Funakubo, Yoshitaka Ehara, Takeshi Kobayashi, 2017 .

Orientation control of epitaxial tetragonal Pb(ZrxTi1−x)O3 thin films grown on (100)KTaO3 substrates by tuning the Zr/(Zr + Ti) ratio

H. Funakubo, Yoshitaka Ehara, O. Sakata, 2015 .

Effects of deposition conditions on the ferroelectric properties of (Al1−xScx)N thin films

H. Funakubo, Yasuo Cho, Y. Hiranaga, 2020 .

Growth of (111)-oriented epitaxial magnesium silicide (Mg2Si) films on (001) Al2O3 substrates by RF magnetron sputtering and their properties

H. Funakubo, Takao Shimizu, K. Akiyama, 2018, Journal of Materials Science.

Electrical Properties of (110)-Oriented Nondoped Mg2Si Films with p-Type Conduction Prepared by RF Magnetron Sputtering Method

H. Funakubo, Takao Shimizu, H. Uchida, 2014, Journal of Electronic Materials.

High Temperature Reproducible Preparation of Mg 2 Si Films on (001)Al 2 O 3 substrates Using RF Magnetron Sputtering Method

H. Funakubo, Takao Shimizu, K. Akiyama, 2014 .

Control of p- and n-type Conduction in Thermoelectric Non-doped Mg_2Si Thin Films Prepared by Sputtering Method

H. Funakubo, Takao Shimizu, H. Uchida, 2018 .

Crystal Isomers of ScFeO3

S. Yasui, M. Itoh, T. Taniyama, 2016 .

Origin of the dielectric response in Ba0.767Ca0.233TiO3

M. Itoh, T. Taniyama, Takao Shimizu, 2012 .

Preparation of Ca-Si Films on (001) Al2O3 Substrates by an RF Magnetron Sputtering Method and Their Electrical Properties

H. Funakubo, Takao Shimizu, H. Uchida, 2016, Journal of Electronic Materials.

Influence of cooling rate on ferroelastic domain structure for epitaxial (100)/(001)-oriented Pb(Zr, Ti)O3 thin films under tensile strain

H. Funakubo, Yoshitaka Ehara, Takao Shimizu, 2021, Japanese Journal of Applied Physics.

Electric-Field-Driven Nanosecond Ferroelastic-Domain Switching Dynamics in Epitaxial Pb(Zr,Ti)O_{3} Film.

H. Funakubo, Long-qing Chen, J. Jo, 2019, Physical review letters.

Electric field-induced change in the crystal structure of MOCVD-Pb(Zr,Ti)O3 films near the phase boundary

H. Funakubo, Takao Shimizu, Hidehisa Inoue, 2019, Japanese Journal of Applied Physics.

Epitaxial growth of perovskite-type oxide thin film on (111)SrTiO3 substrate using (101)PdO as a buffer layer

H. Funakubo, Takao Shimizu, T. Oikawa, 2018, Japanese Journal of Applied Physics.

Growth of {110}-one-axis-oriented perovskite-type oxide films using self-aligned epitaxial (101)PdO//(111) Pd double layers

H. Funakubo, Takao Shimizu, Tetsuro Kariya, 2016 .

Development of the Ferritic Stainless Steel Welding Wire Providing Fine Grain Microstructure Weld Metal for the Components of Automotive Exhaust System

Takao Shimizu, Keigo Inui, Tosiharu Noda, 2003 .

Epitaxial growth of metastable multiferroic AlFeO3 film on SrTiO3 (111) substrate

S. Yasui, M. Itoh, T. Taniyama, 2014 .

Tunable Ferroelectric Properties in Wurtzite (Al0.8Sc0.2)N via Crystal Anisotropy

H. Funakubo, Takao Shimizu, T. Shiraishi, 2022, ACS Applied Electronic Materials.

Thickness scaling of (Al0.8Sc0.2)N films with remanent polarization beyond 100 μC cm−2 around 10 nm in thickness

H. Funakubo, O. Sakata, Takao Shimizu, 2021, Applied Physics Express.

Lower ferroelectric coercive field of ScGaN with equivalent remanent polarization as ScAlN

H. Funakubo, H. Yamada, Takao Shimizu, 2022, Applied Physics Express.

Effect of Film Microstructure on Domain Nucleation and Intrinsic Switching in Ferroelectric Y:HfO2 Thin Film Capacitors

H. Funakubo, A. Gruverman, T. Mimura, 2021, Advanced Functional Materials.

Growth of epitaxial tetragonal (Bi,K)TiO3 films and their ferroelectric and piezoelectric properties

H. Funakubo, Takao Shimizu, H. Uchida, 2016 .

Polar-axis-oriented epitaxial tetragonal (Bi,K)TiO3 films with large remanent polarization deposited below Curie temperature by a hydrothermal method

M. Kurosawa, H. Funakubo, O. Sakata, 2022, Applied Physics Letters.

Good piezoelectricity of self-polarized thick epitaxial (K,Na)NbO3 films grown below the Curie temperature (240 °C) using a hydrothermal method

M. Kurosawa, H. Funakubo, T. Yoshimura, 2020 .

Large Piezoelectric Response in Lead-Free (Bi0.5Na0.5)TiO3-Based Perovskite Thin Films by Ferroelastic Domain Switching: Beyond the Morphotropic Phase Boundary Paradigm.

H. Funakubo, Takao Shimizu, Akinori Tateyama, 2021, ACS applied materials & interfaces.

Simultaneous high-frequency measurement of direct and inverse transverse piezoelectric coefficients of thin films using longitudinal vibration

M. Kurosawa, H. Funakubo, Takao Shimizu, 2023, Sensors and Actuators A: Physical.

Negligible substrate clamping effect on piezoelectric response in (111)-epitaxial tetragonal Pb(Zr, Ti)O3 films

H. Funakubo, O. Sakata, Takao Shimizu, 2015 .

In-situ observation of ultrafast 90° domain switching under application of an electric field in (100)/(001)-oriented tetragonal epitaxial Pb(Zr0.4Ti0.6)O3 thin films

H. Funakubo, Yoshitaka Ehara, S. Yasui, 2017, Scientific Reports.

Epitaxial Growth of Doped HfO2 Ferroelectric Materials

H. Funakubo, Takao Shimizu, 2019, Ferroelectricity in Doped Hafnium Oxide: Materials, Properties and Devices.

Near-field ultraviolet photoluminescence spectroscopy for evaluating the crystallinity of polycrystalline zinc oxide

Motoichi Ohtsu, Takashi Yatsui, Yukio Yamamoto, 2001 .

Impact of Deposition Temperature on Crystal Structure and Ferroelectric Properties of (Al1−x Sc x )N Films Prepared by Sputtering Method

H. Funakubo, Takao Shimizu, M. Akiyama, 2021, physica status solidi (a).

Ferroelectricity mediated by ferroelastic domain switching in HfO2-based epitaxial thin films

H. Funakubo, O. Sakata, T. Mimura, 2018, Applied Physics Letters.

Stability of the orthorhombic phase in (111)-oriented YO 1.5 -substituted HfO 2 films

H. Funakubo, Takao Shimizu, Kiliha Katayama, 2018 .

Domain orientation relationship of orthorhombic and coexisting monoclinic phases of YO1.5-doped HfO2 epitaxial thin films

H. Funakubo, Takao Shimizu, T. Shiraishi, 2018, Japanese Journal of Applied Physics.

Preferential growth of (001)-oriented Bi2SiO5 thin films deposited on (101)-oriented rutile substrates and their ferroelectric and dielectric properties

H. Funakubo, Takao Shimizu, Keisuke Ishihama, 2022, Scientific Reports.

Evidence of ferroelectricity in ferrimagnetic κ-Al2O3-type In0.25Fe1.75O3 films

S. Yasui, M. Itoh, T. Taniyama, 2016 .

Roadmap on ferroelectric hafnia- and zirconia-based materials and devices

Jacob L. Jones, Kun Hee Ye, S. Cheong, 2023, APL Materials.

Fabrication of tetragonal Pb(Zr,Ti)O 3 nanorods by focused ion beam and characterization of the domain structure

O. Sakata, Takao Shimizu, T. Shiraishi, 2015 .

Systematic Investigation of Ferroelectric Properties in x%YO1.5–(100–x%)Hf1–yZryO2 Films

H. Funakubo, T. Mimura, Takao Shimizu, 2023, ACS Applied Electronic Materials.

Electric‐Field‐Induced Ferroelectricity in 5%Y‐doped Hf 0.5 Zr 0.5 O 2 : Transformation from the Paraelectric Tetragonal Phase to the Ferroelectric Orthorhombic Phase

H. Funakubo, O. Sakata, T. Mimura, 2021, physica status solidi (RRL) – Rapid Research Letters.

No‐Heating Deposition of 1‐μm‐Thick Y‐Doped HfO2 Ferroelectric Films with Good Ferroelectric and Piezoelectric Properties by Radio Frequency Magnetron Sputtering Method

H. Funakubo, T. Mimura, Takao Shimizu, 2022, physica status solidi (RRL) – Rapid Research Letters.

Data-Driven Analysis of High-Resolution Hyperspectral Image Data Sets through Nanoscale Capacitance–Voltage Measurements to Visualize Ferroelectric Domain Dynamics

H. Funakubo, Y. Hiranaga, T. Mimura, 2024, ACS Applied Nano Materials.

Invariant polarization switching kinetics in an (Al0.8Sc0.2)N film with frequency and temperature

H. Funakubo, Takao Shimizu, T. Shiraishi, 2023, Applied Physics Letters.

Full polarization reversal at room temperature in unsubstituted AlN

Takao Shimizu, Kota Hasegawa, Naoki Ohashi, 2023, Applied Physics Letters.

In-plane lattice orientation in aluminum scandium nitride epitaxial films deposited on Nb-doped SrTiO3(111) substrates via reactive magnetron sputtering

Takao Shimizu, N. Ohashi, Kota Hasegawa, 2023, Journal of the Ceramic Society of Japan.