S
Shigenori Ueda
Researcher at National Institute for Materials Science
Publications - 309
Citations - 7945
Shigenori Ueda is an academic researcher from National Institute for Materials Science. The author has contributed to research in topics: X-ray photoelectron spectroscopy & Photoemission spectroscopy. The author has an hindex of 40, co-authored 297 publications receiving 6698 citations. Previous affiliations of Shigenori Ueda include KAIST & Osaka University.
Papers
More filters
Journal ArticleDOI
Properties of the quaternary half-metal-type Heusler alloy Co2Mn1-xFexSi
Benjamin Balke,Gerhard H. Fecher,Hem C. Kandpal,Claudia Felser,Keisuke Kobayashi,Eiji Ikenaga,Jung Jin Kim,Shigenori Ueda +7 more
TL;DR: In this article, the bulk properties of the quaternary Heusler alloy Co2Mn1�xFexSi with the Fe concentration x = 0,1/2,1 were investigated by means of x-ray diffraction, high-temperature magnetometry, Mossbauer spectroscopy, and differential scanning calorimetry.
Journal ArticleDOI
Reduction and Sintering of a Nickel–Dispersed‐Alumina Composite and Its Properties
TL;DR: In this article, high-density nickel-dispersed-alumina composites with superior mechanical properties were obtained by the hydrogen reduction and the hot pressing of alumina-nickel oxide (Al2O3/NiO) mixed powders by using NiO or nickel nitrate (Ni(NO3)2·nH2O) as a dispersion source of nickel metal.
Journal ArticleDOI
Electronic, structural, and magnetic properties of the half-metallic ferromagnetic quaternary Heusler compounds CoFeMnZ (Z = Al, Ga, Si, Ge)
Vajiheh Alijani,Siham Ouardi,Gerhard H. Fecher,Jürgen Winterlik,S. Shahab Naghavi,Xeniya Kozina,Gregory Stryganyuk,Claudia Felser,Eiji Ikenaga,Yoshiyuki Yamashita,Shigenori Ueda,Keisuke Kobayashi +11 more
TL;DR: The quaternary intermetallic Heusler compounds CoFeMn$Z$ ($Z=\text{Al}$, Ga, Si, or Ge) with $1:1: 1:1$ stoichiometry were predicted to exhibit half-metallic ferromagnetism by ab initio electronic structure calculations as discussed by the authors.
Journal ArticleDOI
Water Durable Electride Y5Si3: Electronic Structure and Catalytic Activity for Ammonia Synthesis
Yangfan Lu,Jiang Li,Tomofumi Tada,Yoshitake Toda,Shigenori Ueda,Toshiharu Yokoyama,Masaaki Kitano,Hideo Hosono +7 more
TL;DR: An air and water stable electride Y5Si3 and its catalytic activity for direct ammonia synthesis and its strong electron-donating ability to Ru metal is considered to enhance nitrogen dissociation and reduce the activation energy of ammonia synthesis reaction.
Journal ArticleDOI
Role of Electronic Structure in the Martensitic Phase Transition of Ni_2Mn_ Sn_ Studied by Hard-X-Ray Photoelectron Spectroscopy and Ab Initio Calculation
Mao Ye,Akio Kimura,Yoshio Miura,Masafumi Shirai,Yi-Tao Cui,Kenya Shimada,Hirofumi Namatame,Masaki Taniguchi,Masaki Taniguchi,Shigenori Ueda,Keisuke Kobayashi,Ryosuke Kainuma,Toetsu Shishido,K. Fukushima,Takeshi Kanomata +14 more
TL;DR: The underlying mechanism of the martensitic phase transition (MPT) in a new class of ferromagnetic shape memory alloys, Ni2Mn1+xSn1-x, is revealed by the combination of bulk-sensitive hard-x-ray photoelectron spectroscopy and a first-principles density-functional calculation.