Search Results - "TAMURA, Ryuji"

Metallic Honeycomb Catalysts for Methane Steam Reforming: Effect of the Bimetallic Surface Coating on Catalytic Properties by Nakasone, Tsukasa, Xu, Ya, Tamura, Ryuji

“…Metallic honeycomb catalysts are promising candidates for fuel cell and small-scale onsite hydrogen production applications. In this study, high-cell-density…”
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Magnetism of Tsai-Type Quasicrystal Approximants by Suzuki, Shintaro, Ishikawa, Asuka, Yamada, Tsunetomo, Sugimoto, Takanori, Sakurai, Akira, Tamura, Ryuji

“…Magnetism of Tsai-type 1/1 approximants has been extensively investigated for the last decade. The experimental results on Tsai-type approximants are reviewed…”
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Classical and Quantum Magnetic Ground States on an Icosahedral Cluster by Suzuki, Shintaro, Tamura, Ryuji, Sugimoto, Takanori

“…Recent discovery of various magnetism in Tsai-type quasicrystal approximants, in whose alloys rare-earth ions located on icosahedral vertices are coupled with…”
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Experimental Observation of Long-Range Magnetic Order in Icosahedral Quasicrystals by Tamura, Ryuji, Ishikawa, Asuka, Suzuki, Shintaro, Kotajima, Takahiro, Tanaka, Yujiro, Seki, Takehito, Shibata, Naoya, Yamada, Tsunetomo, Fujii, Takenori, Wang, Chin-Wei, Avdeev, Maxim, Nawa, Kazuhiro, Okuyama, Daisuke, Sato, Taku J

“…Quasicrystals (QCs), first discovered in 1984, generally do not exhibit long-range magnetic order. Here, we report on long-range magnetic order in the real…”
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Catalytic Properties and Their Relation with Adsorption Energies Calculated by Density Functional Theory in Pd-Containing 1/1 Approximant Crystals by Yoshikawa, Haruka, Labib, Farid, Xu, Ya, Tamura, Ryuji

“…Quasicrystals and approximant crystals (ACs) have a unique complex structure with many crystallographically non-equivalent sites. In order to apply this…”
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Machine Learning to Predict Quasicrystals from Chemical Compositions by Liu, Chang, Fujita, Erina, Katsura, Yukari, Inada, Yuki, Ishikawa, Asuka, Tamura, Ryuji, Kimura, Kaoru, Yoshida, Ryo

“…Quasicrystals have emerged as the third class of solid‐state materials, distinguished from periodic crystals and amorphous solids, which have long‐range order…”
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High Dimensional Approach to Antiferromagnetic Aperiodic Spin Systems by Coates, Sam, Tamura, Ryuji

“…Monte Carlo approaches to aperiodic spin systems have found a range of antiferromagnetic ground states for both classical and quantum spins. In each case, the…”
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Superconductivity in a van der Waals layered quasicrystal by Tokumoto, Yuki, Hamano, Kotaro, Nakagawa, Sunao, Kamimura, Yasushi, Suzuki, Shintaro, Tamura, Ryuji, Edagawa, Keiichi

“…Van der Waals layered transition-metal chalcogenides are drawing significant attention owing to their intriguing physical properties. This group of materials…”
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High Phase-Purity and Composition-Tunable Ferromagnetic Icosahedral Quasicrystal by Takeuchi, Ryo, Labib, Farid, Tsugawa, Takafumi, Akai, Yuto, Ishikawa, Asuka, Suzuki, Shintaro, Fujii, Takenori, Tamura, Ryuji

“…We discovered a ferromagnetic Au-Ga-Dy icosahedral quasicrystal (i QC), not only with high phase purity but also with tunable composition. The isothermal…”
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Magnetocaloric effect in ferromagnetic 1/1 quasicrystal approximants Au64Al22R14 (R = Gd, Tb, and Dy) by Kikugawa, Naoki, Hiroto, Takanobu, Ishikawa, Asuka, Suzuki, Shintaro, Sakurai, Hiroya, Tamura, Ryuji

“…•Magnetocaloric effects of ferromagnetic approximants Au64Al22R14 (R = Gd, Tb, and Dy) investigated.•Magnetic entropy change is from unique spin configuration…”
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Catalytic properties of Ni-Fe-Mg alloy nanoparticle catalysts for methanol decomposition by Mitani, Haruka, Xu, Ya, Hirano, Toshiyuki, Demura, Masahiko, Tamura, Ryuji

“…[Display omitted] •Ni-15Fe-13Mg nanoparticles showed much less carbon deposition in methanol decomposition than Ni-25Fe nanoparticles.•The sample including Mg…”
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Phenomenological Magnetic Model in Tsai-Type Approximants by Sugimoto, Takanori, Tohyama, Takami, Hiroto, Takanobu, Tamura, Ryuji

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Coexistence of superconductivity and charge-density wave in the quasi-one-dimensional material HfTe3 by Denholme, Saleem J., Yukawa, Akinori, Tsumura, Kohei, Nagao, Masanori, Tamura, Ryuji, Watauchi, Satoshi, Tanaka, Isao, Takayanagi, Hideaki, Miyakawa, Nobuaki

“…We present the first experimental evidence for metallicity, superconductivity (SC) and the co-existence of charge density waves (CDW) in the…”
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Magnetization reversal of (Sm, Ce)2(Co, Fe, Cu, Zr)17 magnets as per soft x-ray magnetic circular dichroism microscopy by Matsuura, Yutaka, Maruyama, Ryo, Kato, Ryo, Tamura, Ryuji, Ishigami, Keisuke, Sumitani, Kazushi, Kajiwara, Kentaro, Nakamura, Tetsuya

“…We investigated magnetization reversal of (Sm, Ce)2(Co, Fe, Cu, Zr)17 magnets as per x-ray magnetic circular dichroism microscopy. Magnetization reversal…”
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Composition Effect of Kondo Behavior in Au–Al–Ce Quasicrystalline Approximants by Muro, Yuji, Fukuhara, Tadashi, Namiki, Takahiro, Kuwai, Tomohiko, Sakurai, Akira, Ishikawa, Asuka, Suzuki, Shintaro, Tamura, Ryuji

“…We have studied the magnetic and transport properties of Tsai-type quasicrystalline approximants, AuxAl84−xCe16 and AuyAl86−yCe14 by the measurements of…”
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Phase stability of Yb-Gd-Si ternary alloys at elevated temperature by Morigayama, Hiroki, Miyazaki, Toshihisa, Usami, Syo, Arai, Yutaro, Tsunoura, Toru, Inoue, Ryo, Aoki, Takuya, Tamura, Ryuji, Kogo, Yasuo

“…A ternary alloy with an Yb-Gd-Si composition was designed using thermodynamic calculation software. The ternary alloy with two different steady-state phases…”
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High- and Low-Energy Photoemission Study of Strongly Correlated Au–Ga–Ce Quasicrystal Approximants: Localized 4f Nature and Disorder Effects by Nozue, Goro, Fujiwara, Hidenori, Hamamoto, Satoru, Ose, Akane, Tsutsumi, Miwa, Kiss, Takayuki, Higashiya, Atsushi, Yamasaki, Atsushi, Kanai-Nakata, Yuina, Imada, Shin, Oura, Masaki, Tamasaku, Kenji, Yabashi, Makina, Ishikawa, Tetsuya, Motouri, Azusa, Labib, Farid, Suzuki, Shintaro, Tamura, Ryuji, Sekiyama, Akira

“…We have investigated the electronic structures of Ce-based 1/1 quasicrystal approximants Au59.2Ga25.7Ce15.1 and Au60.3Ga26.1Ce13.6 by hard X-ray photoemission…”
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Comprehensive experimental datasets of quasicrystals and their approximants by Fujita, Erina, Liu, Chang, Ishikawa, Asuka, Mato, Tomoya, Kitahara, Koichi, Tamura, Ryuji, Kimura, Kaoru, Yoshida, Ryo, Katsura, Yukari

“…Quasicrystals are solid-state materials that typically exhibit unique symmetries, such as icosahedral or decagonal diffraction symmetry. They were first…”
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Coercivity Mechanism of Ga-Doped Nd-Fe-B Sintered Magnets by Matsuura, Yutaka, Nakamura, Tetsuya, Ishigami, Keisuke, Kajiwara, Kentaro, Sumitani, Kazushi, Tamura, Ryuji, Nagae, Masahiro, Osamura, Kozo

“…The alignment dependence and angular dependence of coercivity (ALDC and ANDC, respectively) of aligned and isotropically aligned Ga-doped…”
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Superconductivity and Structural Phase Transitions in Caged Compounds RT2Zn20 ($\text{R}= \text{La}$, Pr, $\text{T}= \text{Ru}$, Ir) by Onimaru, Takahiro, Matsumoto, Keisuke T, Inoue, Yukihiro F, Umeo, Kazunori, Saiga, Yuta, Matsushita, Yoshitaka, Tamura, Ryuji, Nishimoto, Kazue, Ishii, Isao, Suzuki, Takashi, Takabatake, Toshiro

“…Electrical resistivity $\rho$, specific heat $C$, magnetization $M$ measurements are reported on four compounds, LaRu 2 Zn 20 , PrRu 2 Zn 20 , LaIr 2 Zn 20 ,…”
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