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Hisao Yamauchi

Researcher at Aalto University

Publications -  338
Citations -  6063

Hisao Yamauchi is an academic researcher from Aalto University. The author has contributed to research in topics: Superconductivity & Crystal structure. The author has an hindex of 38, co-authored 338 publications receiving 5818 citations. Previous affiliations of Hisao Yamauchi include Central Research Institute of Electric Power Industry & Panasonic.

Papers
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Journal ArticleDOI

Oxygen Nonstoichiometry in YBaCo4O7+δ: Large Low-Temperature Oxygen Absorption/Desorption Capability

Maarit Karppinen, +7 more
- 01 Jan 2006 - 
TL;DR: In this paper, an uncommon oxygen absorption/desorption behavior is reported for the cation-stoichiometric cobalt oxide, YBaCo4O7, structurally composed of two kinds of layers of corner-sharing CoO4 tetrahedra.
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Unconventional magnetic transition and transport behavior in Na 0.75 CoO 2

Teruki Motohashi, +7 more
- 06 Feb 2003 - 
TL;DR: In this paper, an unusual magnetic and transport phenomenon in a layered cobalt oxide was reported, where a magnetic transition of the second order was clearly detected at the point where an apparent specific heat jump, an onset of extremely small spontaneous magnetization, and a kink in resistivity came in.
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Spin glass behavior in RuSr 2 Gd 1.5 Ce 0.5 Cu 2 O 10 − δ

C. A. Cardoso, +6 more
- 29 Jan 2003 - 
TL;DR: In this article, a frequency-dependent cusp was observed in polycrystalline Ru-1222 vs T measurements, which was interpreted as a spin glass transition, which is commonly accepted to describe a spin-glass with magnetically interacting clusters.
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Superconductivity at 80 K in (Sr,Ca) 3 Cu 2 O 4 +δCl 2-y induced by apical oxygen doping

Caiwei Jin, +8 more
- 01 May 1995 - 
TL;DR: In this paper, holes are introduced by partially replacing the (monovalent) halogen that occupies the apical sites with (divalent) oxygen, and a double-layer compound (Sr,Ca)3Cu2O4+δCl2-y is obtained.
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Oxygen content analysis of functional perovskite-derived cobalt oxides

Maarit Karppinen, +6 more
- 22 May 2002 - 
TL;DR: In this article, the authors evaluated the possible redox chemical methods for precisely determining the oxygen content in complex cobalt oxides that are being studied increasingly for their interesting electric and magnetic properties.