Madoka Ono
Asahi Glass Co.
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Publication
Featured researches published by Madoka Ono.
Applied Physics Letters | 2012
Madoka Ono; Kenta Hara; Masanori Fujinami; Setsuro Ito
We examine voids in silica glasses with different fictive temperatures using positron annihilation lifetime spectroscopy. The pick-off annihilation lifetime of ortho-positronium increases with the fictive temperature, Tf, indicating that the void size increases. High Tf leads to high density and low degree of network polymerization so that increasing void size means that the density fluctuation of the silica glass increases with high Tf. Assuming that such density fluctuation causes light scattering, the previously reported Tf dependence of the Rayleigh scattering coefficient can be well explained by the change in void size.
Applied Physics Letters | 2016
A. Yagmur; Ken-ichi Uchida; Kazuki Ihara; I. Ioka; Takashi Kikkawa; Madoka Ono; K. Kashiwagi; T. Nakashima; Akihiro Kirihara; Masahiko Ishida; Eiji Saitoh
Thermoelectric devices based on the spin Seebeck effect (SSE) were irradiated with gamma (γ) rays with the total dose of around 3 × 105 Gy in order to investigate the γ-radiation resistance of the devices. To demonstrate this, Pt/Ni0.2Zn0.3Fe2.5O4/Glass and Pt/Bi0.1Y2.9Fe5O12/Gd3Ga5O12 SSE devices were used. We confirmed that the thermoelectric, magnetic, and structural properties of the SSE devices are not affected by the γ-ray irradiation. This result demonstrates that SSE devices are applicable to thermoelectric generation even in high radiation environments.
Nature Physics | 2016
Ryosuke Takahashi; Mamoru Matsuo; Madoka Ono; K. Harii; Hiroyuki Chudo; Satoru Okayasu; Jun'ichi Ieda; Saburo Takahashi; Sadamichi Maekawa; Eiji Saitoh
Archive | 2012
Madoka Ono; Akio Koike; Shin-ichi Amma; Setsuro Ito
Archive | 2012
Madoka Ono; Akio Koike; Shin-ichi Amma; Setsuro Ito
Archive | 2016
Shin-ichi Amma; Madoka Ono
Journal of Non-crystalline Solids | 2012
Setsuro Ito; Taketoshi Taniguchi; Madoka Ono; Ken Uemura
Journal of The Ceramic Society of Japan | 2008
Madoka Ono; Akio Koike; Kaname Okada; Tomonori Ogawa; Sinya Kikugawa
Optics Express | 2018
Madoka Ono; Shuhei Aoyama; Masanori Fujinami; Setsuro Ito
Journal of the American Ceramic Society | 2018
Shingo Urata; Ryota Ando; Madoka Ono; Yasuo Hayashi