Bulk Amorphous Alumina: The Density-Driven Interplay of Pentahedral Pyramids and Octahedra for High Dielectric Permittivity

Hideki Hashimoto; Yohei Onodera; Rei Okuno; Masashi Miyakawa; Hitoshi Yusa; Takashi Taniguchi; Sho Kakizawa; Shuya Sato; Takao Shimizu; Taro Kuwano; Takato Abe; Naoki Takata; Dasom Kim; Koji Yazawa; Kenzo Deguchi; Shinobu Ohki; Koji Kimoto; Shunsuke Shimizu; Yuto Okawara; Yuta Nishina; Aiko Shimada; Ryuichi Maekawa; Koji Ohara; Yuta Shuseki; Hidetoshi Morita; Tomoko Sato; Hiroyo Segawa; Hiroki Taniguchi; Atsunobu Masuno; Takeharu Yoshii; Koji Kawada; Toshinori Okura; Shinji Kohara

doi:10.1021/jacs.5c22344

Journal of the American Chemical Society

Bulk Amorphous Alumina: The Density-Driven Interplay of Pentahedral Pyramids and Octahedra for High Dielectric Permittivity

H Hideki Hashimoto (Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan) Y Yohei Onodera (Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan) R Rei Okuno (Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan) M Masashi Miyakawa (Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan) H Hitoshi Yusa (Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan) T Takashi Taniguchi S Sho Kakizawa (Japan Synchrotron Radiation Research Institute,1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan) S Shuya Sato (Graduate School of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan) T Takao Shimizu (Research Center for Electronic and Optical Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan) T Taro Kuwano (Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan) T Takato Abe (Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan) N Naoki Takata (Department of Materials Design Innovation Engineering, Graduate School of Engineering) D Dasom Kim (Department of Materials Design Innovation Engineering, Graduate School of Engineering) K Koji Yazawa (JEOL, 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan) K Kenzo Deguchi (NMR Station, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan) S Shinobu Ohki (NMR Station, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan) K Koji Kimoto (Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan) S Shunsuke Shimizu (Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan) Y Yuto Okawara (Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan) Y Yuta Nishina (Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan) A Aiko Shimada (JEOL, 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan) R Ryuichi Maekawa (Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan) K Koji Ohara (Japan Synchrotron Radiation Research Institute,1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan) Y Yuta Shuseki (Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan) H Hidetoshi Morita (Unprecedented-scale Data Analytics Center, Tohoku University, 468-1 Aoba, Aramaki-Aza, Aoba-ku, Sendai, Miyagi 980-8578, Japan) T Tomoko Sato (Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan) H Hiroyo Segawa (Research Center for Electronic and Optical Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan) H Hiroki Taniguchi (Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan) A Atsunobu Masuno (Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan) T Takeharu Yoshii (Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan) K Koji Kawada (Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan) T Toshinori Okura (Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan) S Shinji Kohara (Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan)

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Article Details

Journal Journal of the American Chemical Society

Volume / Issue Vol. 148, Issue 15

Published April 22, 2026

Pages 15826-15837

DOI 10.1021/jacs.5c22344

ISSN 0002-7863

Publisher American Chemical Society

Journal Info

Journal of the American Chemical Society

American Chemical Society

ISSN: 0002-7863 Physical Sciences

Authors (33)

H

Hideki Hashimoto

Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

Y

Yohei Onodera

Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

R

Rei Okuno

Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

M

Masashi Miyakawa

Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

H

Hitoshi Yusa

Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

T

Takashi Taniguchi

S

Sho Kakizawa

Japan Synchrotron Radiation Research Institute,1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan

S

Shuya Sato

Graduate School of Science and Technology, Tokyo University of Science, 2641, Yamazaki, Noda, Chiba 278-8510, Japan

T

Takao Shimizu

Research Center for Electronic and Optical Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

T

Taro Kuwano

Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan

T

Takato Abe

Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

N

Naoki Takata

Department of Materials Design Innovation Engineering, Graduate School of Engineering

D

Dasom Kim

Department of Materials Design Innovation Engineering, Graduate School of Engineering

K

Koji Yazawa

JEOL, 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan

K

Kenzo Deguchi

NMR Station, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan

S

Shinobu Ohki

NMR Station, National Institute for Materials Science (NIMS), 3-13 Sakura, Tsukuba, Ibaraki 305-0003, Japan

K

Koji Kimoto

Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

S

Shunsuke Shimizu

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan

Y

Yuto Okawara

Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

Y

Yuta Nishina

Research Core for Interdisciplinary Sciences, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan

A

Aiko Shimada

JEOL, 3-1-2 Musashino, Akishima, Tokyo 196-8558, Japan

R

Ryuichi Maekawa

Applied Chemistry and Chemical Engineering, Graduate School of Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

K

Koji Ohara

Japan Synchrotron Radiation Research Institute,1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan

Y

Yuta Shuseki

Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

H

Hidetoshi Morita

Unprecedented-scale Data Analytics Center, Tohoku University, 468-1 Aoba, Aramaki-Aza, Aoba-ku, Sendai, Miyagi 980-8578, Japan

T

Tomoko Sato

Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

H

Hiroyo Segawa

Research Center for Electronic and Optical Materials, National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

H

Hiroki Taniguchi

Department of Physics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan

A

Atsunobu Masuno

Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

T

Takeharu Yoshii

Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan

K

Koji Kawada

Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

T

Toshinori Okura

Department of Applied Chemistry, School of Advanced Engineering, Kogakuin University, 2665-1 Nakano, Hachioji, Tokyo 192-0015, Japan

S

Shinji Kohara

Center for Basic Research on Materials, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

Bulk Amorphous Alumina: The Density-Driven Interplay of Pentahedral Pyramids and Octahedra for High Dielectric Permittivity

Article Details

Journal Info

Authors (33)

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