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Scopus Author ID: 57196320198

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Employment (3)

Tokyo University of Science: Chiba, JP

2023-09 to present | Assistant Professor
Employment
Source: Self-asserted source
Hyunwook Nam

University of Yamanashi: Kofu, JP

2023-04 to 2023-08 | Research assistant professor
Employment
Source: Self-asserted source
Hyunwook Nam

University of Yamanashi: Kofu, JP

2022-04 to 2023-03 | Postdoctoral researcher
Employment
Source: Self-asserted source
Hyunwook Nam

Education and qualifications (1)

University of Yamanashi: Kofu, JP

2017-04 to 2022-03 | M.S/Ph.D
Education
Source: Self-asserted source
Hyunwook Nam

Works (23)

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

Scripta Materialia
2025-06 | Journal article
DOI: 10.1016/j.scriptamat.2025.116637
Contributors: Hyunwook Nam; Sangwook Kim; Ichiro Fujii; Motoki Aruga; Shintaro Ueno; Yoshihiro Kuroiwa; Satoshi Wada
Source: check_circle
Crossref

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

Applied Physics Letters
2025-01-06 | Journal article
DOI: 10.1063/5.0239629
Contributors: Yuri Ohshima; Yuta Ochiai; Yuka Takagi; Hyunwook Nam; Hajime Nagata
Source: check_circle
Crossref

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

Japanese Journal of Applied Physics
2024-08-01 | Journal article
DOI: 10.35848/1347-4065/ad6670
Contributors: Adisu Tsige Shibiru; Ichiro Fujii; Piyush Sapkota; Hyunwook Nam; Gopal Prasad Khanal; Shintaro Ueno; Satoshi Wada
Source: check_circle
Crossref

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

Journal of the Ceramic Society of Japan
2024-07-01 | Journal article
DOI: 10.2109/jcersj2.23211
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Kaito Okada; Yuka Takagi; Hyunwook Nam; Hajime Nagata
Source: Self-asserted source
Hyunwook Nam

Enhanced piezoelectric properties of 〈110〉 grain-oriented 0.50(Bi0.5Na0.5)TiO3-0.5BaTiO3 ceramics by domain engineering above Curie temperature

Journal of the Ceramic Society of Japan
2024-07-01 | Journal article
DOI: 10.2109/jcersj2.23217
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Zhuangkai Wang; Ichiro Fujii; Sota Saito; Hyunwook Nam; Adisu Tsige Shibiru; Shintaro Ueno; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

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

Journal of the Ceramic Society of Japan
2024-07-01 | Journal article
DOI: 10.2109/jcersj2.23215
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Shota Nakagawa; Ichiro Fujii; Hyunwook Nam; Shintaro Ueno; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

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

Journal of the Ceramic Society of Japan
2024-07-01 | Journal article
DOI: 10.2109/jcersj2.23218
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Adisu Tsige Shibiru; Ichiro Fujii; Hyunwook Nam; Piyush Sapkota; Gopal Prasad Khanal; Zhuangkai Wang; Shintaro Ueno; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

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

Journal of the Ceramic Society of Japan
2024-07-01 | Journal article
DOI: 10.2109/jcersj2.23209
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Keisuke Nozoe; Tomoki Oana; Hyunwook Nam; Yuka Takagi; Hajime Nagata
Source: Self-asserted source
Hyunwook Nam

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

Scripta Materialia
2024-04 | Journal article
DOI: 10.1016/j.scriptamat.2024.116021
Contributors: Sangwook Kim; Hyunwook Nam; Jamil Ur Rahman; Piyush Sapkota
Source: check_circle
Crossref

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

Japanese Journal of Applied Physics
2023-07-17 | Journal article | Author
DOI: 10.35848/1347-4065/ace1dc
Part of ISSN: 0021-4922
Part of ISSN: 1347-4065
Contributors: Hyunwook Nam; Ichiro Fujii; Shota Nakagawa; Shintaro Ueno; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam
grade
Preferred source (of 2)‎

Solvothermal synthesis of dispersible homogeneous KNbO3 nanocubes from K4Nb6O17 microsheets

Journal of the Ceramic Society of Japan
2023-07-01 | Journal article
DOI: 10.2109/jcersj2.23007
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Yuma Yamada; Piyush Sapkota; Hyunwook Nam; Erika Yamaga; Ryoichi Kunisada; Takahiro Takei; Nobuhiro Kumada; Ichiro Fujii; Satoshi Wada; Shintaro Ueno
Source: Self-asserted source
Hyunwook Nam

Piezoelectric Actuation Mechanism Involving Extrinsic Nano‐domain Dynamics in Lead‐free Piezoelectrics

Advanced Materials
2023-01-07 | Journal article
DOI: 10.1002/adma.202208717
Part of ISSN: 0935-9648
Part of ISSN: 1521-4095
Contributors: Sangwook Kim; Ryuki Miyauchi; Yukio Sato; Hyunwook Nam; Ichiro Fujii; Shintaro Ueno; Yoshihiro Kuroiwa; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

Composition dependence of structural and piezoelectric properties in Bi(Mg0.5Ti0.5)O3-modified BaTiO3-BiFeO3 ceramics

Japanese Journal of Applied Physics
2022-11-01 | Journal article
DOI: 10.35848/1347-4065/ac85c7
Part of ISSN: 0021-4922
Part of ISSN: 1347-4065
Contributors: Hyunwook Nam; Ichiro Fujii; Sangwook Kim; Takaaki Ishii; Shintaro Ueno; Gopal Prasad Khanal; Yoshihiro Kuroiwa; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

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

Materials
2022-06-21 | Journal article
DOI: 10.3390/ma15134388
Part of ISSN: 1996-1944
Contributors: Sangwook Kim; Hyunwook Nam; Ilkan Calisir
Source: Self-asserted source
Hyunwook Nam

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

Scripta Materialia
2021-12 | Journal article
DOI: 10.1016/j.scriptamat.2021.114176
Part of ISSN: 1359-6462
Contributors: Sangwook Kim; Hyunwook Nam; Ichiro Fujii; Shintaro Ueno; Chikako Moriyoshi; Yoshihiro Kuroiwa; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

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

Japanese Journal of Applied Physics
2021-11-01 | Journal article
DOI: 10.35848/1347-4065/ac0fb5
Part of ISSN: 0021-4922
Part of ISSN: 1347-4065
Contributors: Sangwook Kim; Hyunwook Nam; Ichiro Fujii; Shintaro Ueno; Chikako Moriyoshi; Yoshihiro Kuroiwa; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

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

Journal of Applied Physics
2021-03-07 | Journal article
DOI: 10.1063/5.0041217
Part of ISSN: 0021-8979
Part of ISSN: 1089-7550
Contributors: Sangwook Kim; Hyunwook Nam; Piyush Sapkota; Gopal Prasad Khanal; Ichiro Fujii; Shintaro Ueno; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

Thermal annealing induced recovery of damaged surface layer for enhanced ferroelectricity in Bi-based ceramics

Japanese Journal of Applied Physics
2019-11-01 | Journal article
DOI: 10.7567/1347-4065/ab37b5
Part of ISSN: 0021-4922
Part of ISSN: 1347-4065
Contributors: Hyunwook Nam; Sangwook Kim; Gopal Prasad Khanal; Ichiro Fujii; Shintaro Ueno; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

Effect of A-site off-stoichiometry on ferroelectric and piezoelectric properties of BaTiO3–Bi(Mg1/2Ti1/2)O3–BiFeO3 ceramics

Journal of the Ceramic Society of Japan
2019-06-01 | Journal article
DOI: 10.2109/jcersj2.19010
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Hyunwook NAM; Ichiro FUJII; Sangwook KIM; Tomoya AIZAWA; Shintaro UENO; Satoshi WADA
Source: Self-asserted source
Hyunwook Nam

Effects of AC- and DC-bias field poling on piezoelectric properties of Bi-based ceramics

Journal of the Ceramic Society of Japan
2019-06-01 | Journal article
DOI: 10.2109/jcersj2.19002
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Sangwook KIM; Gopal Prasad KHANAL; Hyunwook NAM; Ichiro FUJII; Shintaro UENO; Satoshi WADA
Source: Self-asserted source
Hyunwook Nam

Influence of quenching temperature on piezoelectric and ferroelectrics properties in BaTiO3-Bi(Mg1/2Ti1/2)O3-BiFeO3 ceramics

Ceramics International
2018-11 | Journal article
DOI: 10.1016/j.ceramint.2018.08.115
Part of ISSN: 0272-8842
Contributors: Hyunwook Nam; Sangwook Kim; Tomoya Aizawa; Ichiro Fujii; Shintaro Ueno; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam

In-situ electric field induced lattice strain response observation in BiFeO3–BaTiO3 lead-free piezoelectric ceramics

Journal of the Ceramic Society of Japan
2018-05-01 | Journal article
DOI: 10.2109/jcersj2.17259
Part of ISSN: 1348-6535
Part of ISSN: 1882-0743
Contributors: Sangwook KIM; Gopal Prasad KHANAL; Hyun-Wook NAM; Minsu KIM; Ichiro FUJII; Shintaro UENO; Chikako MORIYOSHI; Yoshihiro KUROIWA; Satoshi WADA
Source: Self-asserted source
Hyunwook Nam

Structural and electrical characteristics of potential candidate lead-free BiFeO3-BaTiO3 piezoelectric ceramics

Journal of Applied Physics
2017-10-28 | Journal article
DOI: 10.1063/1.4999375
Part of ISSN: 0021-8979
Part of ISSN: 1089-7550
Contributors: Sangwook Kim; Gopal Prasad Khanal; Hyun-Wook Nam; Ichiro Fujii; Shintaro Ueno; Chikako Moriyoshi; Yoshihiro Kuroiwa; Satoshi Wada
Source: Self-asserted source
Hyunwook Nam
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