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Fe
O
Kajiwara, Yosuke*; Uchida, Kenichi*; Kikuchi, Daisuke*; An, Toshu*; Fujikawa, Yasunori*; Saito, Eiji
Applied Physics Letters, 103(5), p.052404_1 - 052404_4, 2013/07
Times Cited Count：7 Percentile：29.57(Physics, Applied)Heat-current-induced manipulation of spin relaxation in YFeO under an in-plane temperature gradient is investigated. We show that the linewidth of the ferromagnetic resonance spectrum, i.e., the spin relaxation, in an YFeO film increases or decreases depending on the temperature-gradient direction and that this modulation is attributed to the spin-transfer torque caused by a thermally induced transverse spin-wave spin current in the YFeO film. The experimental results also show that the spin-current magnitude generated by spin pumping in an attached Pt film is inversely proportional to the square of the modulated Gilbert damping constant, consistent with a phenomenological spin-pumping model.
Sano, Michiaki; Ishii, Eiichi; Niinuma, Hiroaki; Fujikawa, Daisuke; Sanada, Hiroyuki; Hiraga, Naoto; Tsusaka, Kimikazu; Yamasaki, Masanao*
JAEA-Data/Code 2009-015, 142 Pages, 2009/11
JAEA-Data-Code-2009-015.pdf:41.84MB
In the Horonobe Underground Laboratory (URL) Project, Construction of the Ventilation Shaft, the East Shaft and the drifts has been conducted as a Phase 2 research. In the research, observation of the lithofacies and fracture, and in-situ tests, simple elastic wave exploration, Schmidt hammer test, Equotip test, point load test are conducted in each face, and measuring instruments such as extensometer, rock-bolt axial force meter, shotcrete stress meter and tunnel lining concrete stress meter are installed in particular face. In addition, for the purpose of the validation of the results of predictive analysis, conducted in Phase 1, about the amount of spring water during construction of Underground facilities, data on the changes of amount of spring water and water quality is obtained. This report summarizes the measurements data acquired at the Ventilation Shaft (GL -161m 
-250m), the East Shaft (GL -110m -140m) and the 140m drift.
Yamazaki, Masanao; Sekiya, Yoshitomo; Fujikawa, Daisuke; Kitagawa, Yoshito*
Chika Kukan Shimpojiumu, Rombunshu, 14, p.191 - 196, 2009/01
The shafts and drifts of the Horonobe Underground Research Laboratory Project have been constructed by JAEA. The construction method of shaft is a short step method. The East Shaft of excavation system is the blasting excavation, and the Ventilation Shaft is the machine excavation. At the present, The East Shaft has ended to G.L.-140.5 m and Ventilation Shaft has ended to G.L.-210.5 m at the end of July, 2008. The difference in depth change or a excavation system was analyzed about the excavation time which occupies about 40% of the cycle time of each shaft. This paper reports the outline of the construction track record of the shafts and the result of having analyzed cycle time paying attention to excavation time.
Yamazaki, Masanao; Funaki, Hironori; Yamaguchi, Takehiro*; Niinuma, Hiroaki; Fujikawa, Daisuke; Sanada, Hiroyuki; Hiraga, Naoto; Tsusaka, Kimikazu
JAEA-Data/Code 2008-023, 136 Pages, 2008/11
JAEA-Data-Code-2008-023.pdf:17.08MB
This report summarizes the measurements data acquired at the Ventilation Shaft, the East Shaft and the drifts in 2007 based on the Observational Construction Program. The report summarizes for the purpose of the followings: sharing the investigation and measurements data, preventing the loss of them and acquisition the basic data for carrying out the Observational Construction Program.
Yamazaki, Masanao; Yamaguchi, Takehiro; Funaki, Hironori; Fujikawa, Daisuke; Tsusaka, Kimikazu
JAEA-Research 2008-068, 45 Pages, 2008/09
JAEA-Research-2008-068.pdf:3.76MB
This report summarizes the measurement plan during construction of the underground facility based on the design in advance and the observational construction program for feedback measurements data into design and construction on subsequent steps. This report also describes about design and construction management program for contractor of underground facilities.
Kojima, Wataru; Yamakami, Mitsunori; Fujikawa, Daisuke; Orukawa, Go*; Kitagawa, Yoshito*; Doi, Takashi*; Saito, Ryosuke*
Doboku Gakkai Heisei-20-Nendo Zenkoku Taikai Dai-63-Kai Nenji Gakujutsu Koenkai Koen Rombunshu, p.453 - 454, 2008/09
no abstracts in English
Kojima, Wataru; Yamakami, Mitsunori; Fujikawa, Daisuke; Kitagawa, Yoshito*; Hagihara, Takeshi*; Saito, Ryosuke*
Doboku Gakkai Heisei-20-Nendo Zenkoku Taikai Dai-63-Kai Nenji Gakujutsu Koenkai Koen Rombunshu, p.455 - 456, 2008/09
no abstracts in English
Kitagawa, Yoshito*; Fujikawa, Daisuke
no journal, ,
no abstracts in English
