Eiji Nishibori

Domain Engineering and Anisotropic Domain‐Wall Photovoltaic Effects in Ferroelectric SnS

Ryo Nanae, Satsuki Kitamura, Tomonori Nishimura, Kaito Kanahashi et autres

ABSTRACT Ferroelectric domain walls (DWs) host unique functionalities, including a photovoltaic effect. However, the wide bandgaps of conventional oxide ferroelectrics limit their solar absorption. In contrast, 2D semiconductors, with inherently narrower band gaps, are promising alternatives, yet the photovoltaic behavior of their …

jp, tw (code pays fourni par la source)

Ti-Doping-Induced Interstitial Cu and the Origin of Rattling Vibrations in Cu7VSnS8-Based Thermoelectrics

Hokari Eri, Tanaka Kirin, Kozai Shuya, Suekuni Koichiro et autres

Elucidating the details of crystal structures, such as the occupancy of interstitial sites and atomic vibrations, is essential for understanding the electrical and thermal properties of solids. In this study, we investigated the detailed crystal structures and their temperature evolution for thermoelectric …

jp (code pays fourni par la source)

Ti-Doping-Induced Interstitial Cu and the Origin of Rattling Vibrations in Cu7VSnS8-Based Thermoelectrics

Eri Hokari, Kirin Tanaka, Shuya Kozai, Koichiro Suekuni et autres

Abstract Elucidating the details of crystal structures, such as the occupancy of interstitial sites and atomic vibrations, is essential for understanding the electrical and thermal properties of solids. In this study, we investigated the detailed crystal structures and their temperature evolution for …

jp (code pays fourni par la source)

Stress‐to‐Light Conversion in an Earth‐Abundant Oxide Semiconductor

Tomoki Uchiyama, Koki Otonari, Reona Omori, Guangfa Yang et autres

ABSTRACT Stress‐to‐light conversion in solids represents a unique photonic functionality, yet it has never been realized in a chemically simple and sustainable material. Zinc oxide (ZnO) is an earth‐abundant compound widely used in cosmetics, food supplements, paints, and medicinal products since prehistoric …

jp (code pays fourni par la source)

Humidity-Induced Tristate Magnetic Switching in a Self-Healing High-Spin Cluster Material

AKAGI SHINTARO, Junhao Wang, Ratanasak Manussada, Yasuteru Shigeta et autres

Externally stimulated magnetic materials are essential for next-generation memory and sensing technologies; however, tristate magnetic switching remains rare. This study presents a cyanide-bridged pentadecanuclear spin-cluster, Ni9[W(CN)8]6(pyrazole)18(H2O)6 & centerdot;zH2O (Ni 9 W 6 ), which exhibits reversible humidity-induced tristate magnetic switching. The material …

jp (code pays fourni par la source)

Humidity-Induced Tristate Magnetic Switching in a Self-Healing High-Spin Cluster Material

Shintaro Akagi, J. Wang, Manussada Ratanasak, Yasuteru Shigeta et autres

Externally stimulated magnetic materials are essential for next-generation memory and sensing technologies; however, tristate magnetic switching remains rare. This study presents a cyanide-bridged pentadecanuclear spin-cluster, Ni 9 [W(CN) 8 ] 6 (pyrazole) 18 (H 2 O) 6 · z H 2 O …

jp, pl (code pays fourni par la source)

Solvent-less mechanochemical asymmetric reactions in a ball mill utilizing a polymer-supported Hayashi–Jørgensen catalyst: effects of the polymer backbone and flexibility on its catalytic performance

Kento Hiroishi, Hikaru Matsumoto, Hidetaka Kasai, Masanori Nagao et autres

Fine chemical synthesis under solvent-free or solvent-less mechanochemical conditions is highly desirable from a green chemistry perspective.

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Na Intercalation in Bilayer Graphene: Formation of a Close-Packed Trilayer

Yung‐Chang Lin, Rika Matsumoto, Mahdi Ghorbani‐Asl, Pablo Solís‐Fernández et autres

Sodium (Na) intercalation into bulk graphite is predicted to be energetically unfavorable and has therefore long been considered difficult to achieve. Here, we report the successful intercalation of Na into bilayer graphene (BLG), confirmed by post-intercalation STEM characterization performed under inert conditions. …

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Excited state small unit cell structure from ultrafast X-ray diffraction

Lise Joost Støckler, Kazuki Ota, Eiji Nishibori, Lennard Krause et autres

Absorption of light in photoactive materials excites the electrons and this changes the atomic structures and properties. Ultrafast structural dynamics have been studied in biomolecular crystals using X-ray Free Electron Lasers, but direct experimental observation of short-lived atomic structures of small unit …

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Charge Density Study of Simple Inorganic Solids Using Synchrotron Single Crystal X-ray Diffraction

Eiji Nishibori

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Superlong‐Range Magnetic Coupling and Ferromagnetic Spin Freezing in Mechanoluminescent Semiconductor Eu:SrAl 2 O 4

旭光 鄭, Ichihiro Yamauchi, Tomasz Galica, Eiji Nishibori et autres

Abstract Magnetic transition in nonmetals requires the presence of a considerable proportion of magnetic spins. A new type of ferromagnet named dilute ferromagnetism that contradicts this well‐established concept is proposed for semiconductors of ZnO etc. but has remained experimentally unproven. In this …

jp (code pays fourni par la source)

Excited state small unit cell structure from ultrafast X-ray diffraction

Lise Joost Støckler, Kazuki Ota, Eiji Nishibori, Lennard Krause et autres

Absorption of light in photoactive materials excites the electrons and this changes the atomic structures and properties. Ultrafast structural dynamics have been studied in biomolecular crystals using X-ray Free Electron Lasers, but direct experimental observation of short-lived atomic structures of small unit …

gb, jp (code pays fourni par la source)