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Dive into the research topics where Madoka Ono is active.

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Featured researches published by Madoka Ono.


Applied Physics Letters | 2012

Void structure in silica glass with different fictive temperatures observed with positron annihilation lifetime spectroscopy

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

Gamma radiation resistance of spin Seebeck devices

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

Spin hydrodynamic generation

Ryosuke Takahashi; Mamoru Matsuo; Madoka Ono; K. Harii; Hiroyuki Chudo; Satoru Okayasu; Jun'ichi Ieda; Saburo Takahashi; Sadamichi Maekawa; Eiji Saitoh


Archive | 2012

Glass plate for tempering

Madoka Ono; Akio Koike; Shin-ichi Amma; Setsuro Ito


Archive | 2012

Glass plate to be tempered

Madoka Ono; Akio Koike; Shin-ichi Amma; Setsuro Ito


Archive | 2016

REINFORCED GLASS AND GLASS-TO-BE-TREATED FOR REINFORCED GLASS

Shin-ichi Amma; Madoka Ono


Journal of Non-crystalline Solids | 2012

Network and void structures for glasses with a higher resistance to crack formation

Setsuro Ito; Taketoshi Taniguchi; Madoka Ono; Ken Uemura


Journal of The Ceramic Society of Japan | 2008

Improvement of transparency and durability to deep ultraviolet light in fluorine-doped silica glass fiber by optimizing the preform fabrication process

Madoka Ono; Akio Koike; Kaname Okada; Tomonori Ogawa; Sinya Kikugawa


Optics Express | 2018

Significant suppression of Rayleigh scattering loss in silica glass formed by the compression of its melted phase

Madoka Ono; Shuhei Aoyama; Masanori Fujinami; Setsuro Ito


Journal of the American Ceramic Society | 2018

Molecular dynamics study on nano‐particles reinforced oxide glass

Shingo Urata; Ryota Ando; Madoka Ono; Yasuo Hayashi

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Hiroyuki Chudo

Japan Atomic Energy Agency

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