N
Naoyuki Kitamura
Researcher at National Institute of Advanced Industrial Science and Technology
Publications - 123
Citations - 1600
Naoyuki Kitamura is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Magnetic field & Hydrogen. The author has an hindex of 20, co-authored 120 publications receiving 1489 citations. Previous affiliations of Naoyuki Kitamura include Stockholm University.
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A new ternary magnesium–titanium hydride Mg7TiHx with hydrogen desorption properties better than both binary magnesium and titanium hydrides
Daisuke Kyoi,Toyoto Sato,Ewa Rönnebro,Naoyuki Kitamura,Atsushi Ueda,Mikio Ito,Shigeru Katsuyama,Shigeta Hara,Dag Noréus,Tetsuo Sakai +9 more
TL;DR: A magnesium-titanium hydride, Mg7TiHx exhibits 5.5 mass% (x≈12.7) and decomposes into Mg and TiH1.9 upon releasing 4.7 mass% of hydrogen around 605 K.
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Optical transitions and frequency upconversion emission of Er3+ ions in Ga2S3–GeS2–La2S3 glasses
H. Higuchi,Masahide Takahashi,Yoji Kawamoto,K. Kadono,K. Kadono,T. Ohtsuki,N. Peyghambarian,Naoyuki Kitamura +7 more
TL;DR: In this paper, the spontaneous emission probabilities calculated by the use of the Judd-Ofelt theory and lifetime data were used to measure the upconversion spectra of Er3+ in Ga2S3-GeS2-La 2S3 glasses.
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Structure and stability of high pressure synthesized Mg–TM hydrides (TM = Ti, Zr, Hf, V, Nb and Ta) as possible new hydrogen rich hydrides for hydrogen storage
David Moser,D. J. Bull,Toyoto Sato,Dag Noréus,Daisuke Kyoi,Tetsuo Sakai,Naoyuki Kitamura,Hitoshi Yusa,Takashi Taniguchi,WP Willem Peter Kalisvaart,Peter H. L. Notten +10 more
TL;DR: A series of hydrogen-rich Mg6-7TMH14-16 (TM = Ti, Zr, Hf, V, Nb and Ta) hydrides have been synthesized at 600 °C in a high pressure anvil cell above 4 GPa.
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A novel magnesium-vanadium hydride synthesized by a gigapascal-high-pressure technique
Daisuke Kyoi,Toyoto Sato,Ewa Rönnebro,Yasufumi Tsuji,Naoyuki Kitamura,Atsushi Ueda,Mikio Ito,Shigeru Katsuyama,Shigeta Hara,Dag Noréus,Tetsuo Sakai +10 more
TL;DR: Vajeeston and Fjellvag as mentioned in this paper developed interstitial ternary alkaline-earth-transition metal hydrides formed by immiscible metals that are held together by the presence of hydrogen atoms.
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Ultraviolet-radiation-induced chemical reactions through one-and two-photon absorption processes in GeO 2 –SiO 2 glasses
TL;DR: It is concluded that these centers were formed by band-to-band excitation by two-photon absorption process, and that the lamp illumination caused the formation of Ge E' centers from preexisting oxygen-vacancy-type defects by the one-ph photon absorption process.