T. Ushiyama

University of Electro-Communications — Japan

Materials Science · Physical Sciences

5h-index154citations16works1.32yr avg
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Research Topics

Silicon Nanostructures and Photoluminescence(4), Physics of Superconductivity and Magnetism(3), Microwave Engineering and Waveguides(3), Semiconductor materials and devices(3), Multiferroics and related materials(3)

Publications16 total

Equivalent Circuit Modeling of Coupled Line Discontinuities for Multi-Section Stripline Coupler
IEICE Electronics Express·2026Open Access
Design and Fabrication of a Decade-Bandwidth 3-30 GHz Quadrature Hybrid Coupler with Discontinuity and Packaging Ingenuity
2025
Evaluation of Effective Permittivity of Multilayer Strip-Line Structure with Air Layers Under Substrate Deformation and Prototype of Deformation Suppression Structure
2025· 2 cited
Design and Optimization of Nine-Section Broadband Quadrature Hybrid Coupler Using Strip Line Structure Focused on Thru and Coupled Characteristics
Journal of The Japan Institute of Electronics Packaging·2024· 3 cited
Inelastic Neutron Scattering measurements on phonon-magnon coupling in BiFeO 3
Bulletin of the American Physical Society·2019
Spin-wave induced phonon resonance in multiferroic BiFeO$_3$
arXiv (Cornell University)·2018· 1 citedOpen Access
Two superconducting transitions in single-crystal<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>La</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Ba</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>CuO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>
Physical review. B./Physical review. B·2017· 5 citedOpen Access
Multiple broken symmetries in striped<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>La</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mi>Ba</mml:mi><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mi>CuO</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math>detected by the field-symmetric Nernst effect
Physical review. B./Physical review. B·2016· 3 citedOpen Access
Neutron inelastic scattering measurements of low-energy phonons in the multiferroic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>BiFeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Physical Review B·2015· 14 citedOpen Access
7aBJ-1 Detection of magnetic domains of BiFeO_3 single crystals by magnetization measurements
Meeting Abstracts of the Physical Society of Japan·2014
Magnetic Dispersion and Anisotropy in Multiferroic<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>BiFeO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Physical Review Letters·2012· 98 citedOpen Access
Phase separation growth of Er2SiO5 thin film in Si-rich ErSiO preform
Physica E Low-dimensional Systems and Nanostructures·2008· 4 cited
Crystalline structure and luminescence properties of Er silicates fabricated on Si and SiO&lt;inf&gt;2&lt;/inf&gt;/Si by the sol-gel method
2008
Demonstration of ErSiO superlattice crystal waveguide toward optical amplifiers and emitters
physica status solidi (a)·2008· 16 citedOpen Access
Upconversion emission from ersio superlattice crystal waveguide
2006· 2 cited
A high image-quality LCD addressed by lateral MIM
2002· 6 cited

Frequent Co-authors

Y. Tomioka(7), T. Ito(6), Masaaki Matsuda(4), Y. Yanagisawa(4), Hideo Isshiki(4), T. Kimura(4), Sayu Tomioka(4), John Schneeloch(3), Jinsheng Wen(3), P. M. Gehring(3), Barry Winn(3), R. J. Birgeneau(3), Guangyong Xu(3), Satoshi Ono(3), Mai Sasaki(3), Tsuyoshi Hazemoto(3), Zhijun Xu(2), Genda Gu(2), X. Y. Tee(2), C. Panagopoulos(2)