Kengo Oka

3.1k citations

88 papers · 2.5k indexed · h-index 29

Electronic, Optical and Magnetic Materials top 2%
- Magnetic and transport properties of perovskites and related materials 42
- Multiferroics and related materials 24
Condensed Matter Physics top 2%
- Advanced Condensed Matter Physics 19
- Physics of Superconductivity and Magnetism 8
Materials Chemistry top 2%
- Ferroelectric and Piezoelectric Materials 32
- Thermal Expansion and Ionic Conductivity 20
Renewable Energy, Sustainability and the Environment top 5%
- Advanced Photocatalysis Techniques 9
Catalysis top 10%
Electrical and Electronic Engineering
- Microwave Dielectric Ceramics Synthesis 9

Co-authors: Masaki Azuma Yuichi Shimakawa Masaichiro Mizumaki Wei‐Tin Chen J. Paul Attfield Naoki Ishimatsu Tetsu Watanuki Matthew G. Tucker
Cited by: Electronic, Optical and Magnetic Materials Condensed Matter Physics Materials Chemistry
Journals: Journal of the American Chemical Society (6 papers)Physical Review Letters (1 paper)Advanced Materials (1 paper)
Partner nations: Japan United States United Kingdom

In The Last Decade

Kengo Oka

84 papers receiving 2.5k citations

Peers

Countries citing papers authored by Kengo Oka

Since Specialization

Citations

This map shows the geographic impact of Kengo Oka's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Kengo Oka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kengo Oka more than expected).

Fields of papers citing papers by Kengo Oka

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kengo Oka. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Kengo Oka. The network helps show where Kengo Oka may publish in the future.

Co-authorship network

The 25 scholars most cited alongside Kengo Oka, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Kengo Oka Line = papers co-authored together Kengo Oka links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Pressure-Induced YbFe2O4-Type to Spinel Structural Change of InGaMgO4 SHILAP Revista de lepidopterología ·Takehiro Koike,Hena Das,Kengo Oka,Yoshihiro Kusano,Fernando Cubillas,Francisco Brown,Victor Emmanuel Alvarez‐Montaño,Shigekazu Ito,Kei Shigematsu,Hayato Togano,Ikuya Yamada,Hiroki Ishibashi,Yoshiki Kubota,Shigeo Mori,Noboru Kimizuka,Masaki Azuma	2024	0
2	Compaction of α”-Fe16N2 particles by high-pressure treatment at several gigapascals Scripta Materialia ·Kengo Oka,Tomoyuki Ogawa,Hajime Yamamoto,C. Sakaguchi,Ruwan Gallage,Naoya Kobayashi,Masaki Azuma	2023	2
3	UV ozone treatment for oxidization of spiro-OMeTAD hole transport layer RSC Advances ·Ryotaro Hayashi,Ayane Murota,Kengo Oka,Yuhi Inada,K. Yamashita	2023	3
4	Anionic ordering in Pb₂Ti₄O₉F₂ revisited by nuclear magnetic resonance and density functional theory Dalton Transactions ·Kengo Oka,Tom Ichibha,Daichi Kato,Yasuto Noda,Yusuke Tominaga,Kosei Yamada,Mitsunobu Iwasaki,Naoki Noma,Kenta Hongo,Ryo Maezono,Fernando A. Reboredo	2022	2
5	Negative Thermal Expansion in Fluoroapatite Pb₅(VO₄)₃F Enhanced by the Steric Effect of Pb²⁺ Inorganic Chemistry ·Kengo Oka,Miho Takasu,Wataru Nishiki,Takumi Nishikubo,Masaki Azuma,Naoki Noma,Mitsunobu Iwasaki	2022	2
6	Negative Thermal Expansion in Lead-Free La-Substituted Bi_0.5Na_0.5VO₃ Chemistry of Materials ·Hayato Ishizaki,Yuki Sakai,Takumi Nishikubo,Zhao Pan,Kengo Oka,Hajime Yamamoto,Masaki Azuma	2020	13
7	Enhanced Catalytic Activity and Stability of the Oxygen Evolution Reaction on Tetravalent Mixed Metal Oxide Chemistry of Materials ·Ikuya Yamada,Masaya Kinoshita,Seiji Oda,Hirofumi Tsukasaki,Shogo Kawaguchi,Kengo Oka,Shigeo Mori,Hidekazu Ikeno,Shunsuke Yagi	2020	44
8	Highly active hydrogen evolution catalysis on oxygen-deficient double-perovskite oxide PrBaCo₂O_6−δ Materials Chemistry Frontiers ·Hayato Togano,Kaisei Asai,Seiji Oda,Hidekazu Ikeno,Shogo Kawaguchi,Kengo Oka,Kouhei Wada,Shunsuke Yagi,Ikuya Yamada	2020	25
9	Pronounced Negative Thermal Expansion in Lead-Free BiCoO₃-Based Ferroelectrics Triggered by the Stabilized Perovskite Structure Chemistry of Materials ·Zhao Pan,Xingxing Jiang,Takumi Nishikubo,Yuki Sakai,Hayato Ishizaki,Kengo Oka,Zheshuai Lin,Masaki Azuma	2019	16
10	Negative thermal expansion in electron doped PbVO_3−xF_x Applied Physics Express ·Takahiro Ogata,Kengo Oka,Masaki Azuma	2019	16
11	Enhanced Negative Thermal Expansion Induced by Simultaneous Charge Transfer and Polar–Nonpolar Transitions Journal of the American Chemical Society ·Takumi Nishikubo,Yuki Sakai,Kengo Oka,Tetsu Watanuki,Akihiko Machida,Masaichiro Mizumaki,Koki Maebayashi,Takashi Imai,Takahiro Ogata,Keisuke Yokoyama,Y. Okimoto,Shin‐ya Koshihara,Hajime Hojo,T. Mizokawa,Masaki Azuma	2019	37
12	High-pressure synthesis of highly oxidized Ba_0.5Sr_0.5Co_0.8Fe_0.2O_3−δcubic perovskite Materials Chemistry Frontiers ·Ikuya Yamada,Takao Odake,Kaisei Asai,Kengo Oka,Shogo Kawaguchi,Kouhei Wada,Shunsuke Yagi	2019	22
13	Optimized negative thermal expansion induced by gradual intermetallic charge transfer in Bi₁₋ _x Sb _x NiO₃ Applied Physics Express ·Takumi Nishikubo,Yuki Sakai,Kengo Oka,Masaichiro Mizumaki,Tetsu Watanuki,Akihiko Machida,Naoyuki Maejima,Shigenori Ueda,T. Mizokawa,Masaki Azuma	2018	19
14	Systematic charge distribution changes in Bi- and Pb-3d transition metal perovskites Dalton Transactions ·Masaki Azuma,Yuki Sakai,Takumi Nishikubo,Masaichiro Mizumaki,Tetsu Watanuki,T. Mizokawa,Kengo Oka,Hajime Hojo,M. Naka	2018	10
15	High-Pressure Polymorph of NaBiO₃ Inorganic Chemistry ·Octavianti Naa,Nobuhiro Kumada,Akira Miura,Takahiro Takei,Masaki Azuma,Yoshihiro Kusano,Kengo Oka	2016	8
16	Negative thermal expansion induced by intermetallic charge transfer Science and Technology of Advanced Materials ·Masaki Azuma,Kengo Oka,Koichiro Nabetani	2015	45
17	Superconducting Double Perovskite Bismuth Oxide Prepared by a Low‐Temperature Hydrothermal Reaction Angewandte Chemie International Edition ·Mirza H. K. Rubel,Akira Miura,Takahiro Takei,Nobuhiro Kumada,M. Ali,Masanori Nagao,Satoshi Watauchi,Isao Tanaka,Kengo Oka,Masaki Azuma,Eisuke Magome,Chikako Moriyoshi,Yoshihiro Kuroiwa,A.K.M.A. Islam	2014	66
18	Polarization Rotation in the Monoclinic Perovskite BiCo_1−xFe_xO₃ Angewandte Chemie International Edition ·Kengo Oka,Tsukasa Koyama,Tomoatsu Ozaaki,Shigeo Mori,Yuichi Shimakawa,Masaki Azuma	2012	36
19	Structural Transformation of Hexagonal (0001)BaTiO Japanese Journal of Applied Physics ·Takayuki Watanabe,Mikio Shimada,Toshiaki Aiba,Hisato Yabuta,Kaoru Miura,Kengo Oka,Masaki Azuma,Satoshi Wada,Nobuhiro Kumada	2011	8
20	Synthesis and Physical Property of Triangular Lattice Antiferromagnet InFe2O4 Journal of the Japan Society of Powder and Powder Metallurgy ·Kengo Oka,Masaki Azuma,Yasuo Narumi,Koichi Kindo,Naoaki Hayashi,Yuichi Shimakawa,Mikio Takano	2007	3

About Kengo Oka

Kengo Oka is a scholar working on Electronic, Optical and Magnetic Materials, Condensed Matter Physics and Materials Chemistry, having authored 88 papers that have together received 2.5k indexed citations. Recurring topics across this work include Magnetic and transport properties of perovskites and related materials (42 papers), Ferroelectric and Piezoelectric Materials (32 papers), Multiferroics and related materials (24 papers), Thermal Expansion and Ionic Conductivity (20 papers), Advanced Condensed Matter Physics (19 papers), Microwave Dielectric Ceramics Synthesis (9 papers), Advanced Photocatalysis Techniques (9 papers) and Physics of Superconductivity and Magnetism (8 papers). The work is most often cited by research in Electronic, Optical and Magnetic Materials (1.4k citations), Condensed Matter Physics (529 citations) and Materials Chemistry (1.9k citations). Kengo Oka has collaborated with scholars based in Japan, United States and United Kingdom. Frequent co-authors include Masaki Azuma, Yuichi Shimakawa, Masaichiro Mizumaki, Wei‐Tin Chen, J. Paul Attfield, Naoki Ishimatsu, Tetsu Watanuki, Matthew G. Tucker, Hajime Hojo and Hayato Seki. Their work appears in journals such as Journal of the American Chemical Society, Physical Review Letters and Advanced Materials.

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