Hyunwook Nam

Assistant Professor

University of Tokyo

Japan

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About

Hyunwook Nam is an Assistant Professor at Tokyo University of Science, Japan. His research focuses on the electrical properties and structural behavior of piezoelectric ceramics, particularly in relation to materials such as (Bi0.5Na0.5)TiO3 and BaTiO3. Recent publications include studies on dipole dynamics, phase transitions, and the optimization of poling conditions to enhance piezoelectric properties.

Articles (18)

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2025

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2022

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2021

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2021

Collaborators (3)

Yoshihiro Kuroiwa

Professor

Hiroshima University

JAPAN

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Ichiro Fujii

Associate Professor

University of Yamanashi

JAPAN

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Yukio Sato

Professor

Kumamoto University

JAPAN

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Hyunwook Nam

Research Interests

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About

Articles (18)

Electrical properties and 18O tracer diffusion in (Bi0.5Na0.5)TiO3 ceramics doped with CuO and Nb2O5

Role of the third composition and its A-site cation off-centering mechanism in ternary BiFeO3‒BaTiO3-based piezoelectric ceramics

Control of structural phase transition and energy storage behavior through cooling rate in (Bi0.5Na0.5)TiO3–BaTiO3 ceramics

Advancing piezoelectric properties of barium titanate ceramic through AC + DC field poling over Curie temperature

Enhanced piezoelectric properties of 〈110〉 grain-oriented 0.50(Bi0.5Na0.5)TiO3–0.50BaTiO3 ceramics by domain engineering above Curie temperature

Fabrication of BaTiO3–Bi(Mg0.5Ti0.5)O3–BiFeO3 ceramics at lower temperature by using citrate method

Optimization of conditions for AC plus DC poling above Curie temperature of barium titanate ceramic for piezoelectric property enhancement

Dipole pinning and quenching effects on depolarization temperature of ZnO and (Bi0.5Na0.5)TiO3 ceramics composites

Small-signal piezoelectric properties on Mn-doped BiFeO3-BaTiO3 lead-free piezoelectric ceramics

Gravity-induced structural deformation for enhanced ferroelectric performance in lead-free piezoelectric ceramics

Piezoelectric Actuation Mechanism Involving Extrinsic Nanodomain Dynamics in Lead‐Free Piezoelectrics

Fabrication of 〈100〉-oriented Bi(Mg0.5Ti0.5)O3-modified BiFeO3-BaTiO3 ceramics and their piezoelectric properties

Solvothermal synthesis of dispersible homogeneous KNbO3 nanocubes from K4Nb6O17 microsheets

Composition dependence of structural and piezoelectric properties in Bi(Mg<sub>0.5</sub>Ti<sub>0.5</sub>)O<sub>3</sub>-modified BaTiO<sub>3</sub>-BiFeO<sub>3</sub> ceramics

Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State

Material softening by cation off-centering in Bi-based lead-free piezoelectric ceramics

A-site cation off-centering contribution on ferroelectricity and piezoelectricity in pseudo-cubic perovskite structure of Bi-based lead-free piezoelectrics

Variation of leakage current conduction mechanism by heat treatment in Bi-based lead-free piezoelectric ceramics

Collaborators (3)

Yoshihiro Kuroiwa

Ichiro Fujii

Yukio Sato

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