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Journal Articles

Valence control of charge and orbital frustrated system YbFe$$_{2}$$O$$_{4}$$ with electrochemical Li$$^{+}$$ intercalation

Murase, Satoshi*; Yoshikawa, Yumi*; Fujiwara, Kosuke*; Fukada, Yukimasa*; Teranishi, Takashi*; Kano, Jun*; Fujii, Tatsuo*; Inada, Yasuhiro*; Katayama, Misaki*; Yoshii, Kenji; et al.

Journal of Physics and Chemistry of Solids, 162, p.110468_1 - 110468_6, 2022/03

 Times Cited Count:0 Percentile:0.00(Chemistry, Multidisciplinary)

We report a trial of the valence control for mixed valence iron triangular oxide YbFe$$_{2}$$O$$_{4}$$ in order to develop an effective technique to control the frustration of charges in strongly correlated electron systems. The electro-chemical doping of Li$$^{+}$$ into YbFe$$_{2}$$O$$_{4}$$ was examined on the cell type sample similar to the Li-ion secondary battery cell. Systematic change of the lattice constant, Fe-Fe and Fe-Yb distance were observed with Li doping. Maximum value of the doping was over 300 mAh/g. An EXAFS experiment indicated that Li positioned between Yb octahedron layer (U-layer) and Fe-bipyramidal layer (W-layer). However, detailed change of iron valence state of YbFe$$_{2}$$O$$_{4}$$ was not clearly observed because of the superimpose of the signal from iron metal nano particles in XANES observation. The results indicate that the electrochemical method might be one of the potential technique to control the frustration of charges in YbFe$$_{2}$$O$$_{4}$$.

Journal Articles

Fusion plasma performance and confinement studies on JT-60 and JT-60U

Kamada, Yutaka; Fujita, Takaaki; Ishida, Shinichi; Kikuchi, Mitsuru; Ide, Shunsuke; Takizuka, Tomonori; Shirai, Hiroshi; Koide, Yoshihiko; Fukuda, Takeshi; Hosogane, Nobuyuki; et al.

Fusion Science and Technology (JT-60 Special Issue), 42(2-3), p.185 - 254, 2002/09

 Times Cited Count:34 Percentile:48.48(Nuclear Science & Technology)

With the main aim of providing physics basis for ITER and the steady-state tokamak reactors, JT-60/JT-60U has been developing and optimizing the operational concepts, and extending the discharge regimes toward sustainment of high integrated performance in the reactor relevant parameter regime. In addition to achievement of the equivalent break-even condition (QDTeq up to 1.25) and a high fusion triple product = 1.5E21 m-3skeV, JT-60U has demonstrated the integrated performance of high confinement, high beta-N, full non-inductive current drive with a large fraction of bootstrap current in the reversed magnetic shear and in the high-beta-p ELMy H mode plasmas characterized by both internal and edge transport barriers. The key factors in optimizing these plasmas are profile and shape controls. As represented by discovery of various Internal Transport Barriers, JT-60/JT-60U has been emphasizing freedom and restriction of profiles in various confinement modes. JT-60U has demonstrated applicability of these high confinement modes to ITER and also clarified remaining issues.

Journal Articles

Effects of nonlinear wave absorption on the radiation loss fraction during second harmonic minority ion cyclotron resonance heating experiments in JT-60U

Saigusa, Mikio; Moriyama, Shinichi; Kimura, Haruyuki; Hamamatsu, Kiyotaka; Fujii, Tsuneyuki; Hosogane, Nobuyuki; Sugie, Tatsuo; Kubo, Hirotaka

Japanese Journal of Applied Physics, 36(1A), p.345 - 349, 1997/01

 Times Cited Count:1 Percentile:9.49(Physics, Applied)

no abstracts in English

Journal Articles

Performance of toroidally wide-separation loop antennae for JT-60U ICRF experiments

Fujii, Tsuneyuki; Saigusa, Mikio; Kimura, Haruyuki; Moriyama, Shinichi; Kubo, Hirotaka; Sugie, Tatsuo; Hosogane, Nobuyuki

Fusion Engineering and Design, 26, p.377 - 385, 1995/00

 Times Cited Count:7 Percentile:59.15(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Recent progress in ICRF heating experiments on JT-60U

Saigusa, Mikio; Kimura, Haruyuki; Fujii, Tsuneyuki; Moriyama, Shinichi; Nemoto, Masahiro*; Sato, Masayasu; Hamamatsu, Kiyotaka; Hosogane, Nobuyuki; Isei, Nobuaki; Kamada, Yutaka; et al.

Proc. of the 20th EPS Conf. on Controlled Fusion and Plasma Physics,Vol. 17C,Part III, p.III_989 - III_992, 1993/00

no abstracts in English

Oral presentation

Analysis of discharge in $$SF_6$$ using percolation model

Sasaki, Akira; Torii, Tatsuo; Kato, Susumu*; Takahashi, Eiichi*; Kishimoto, Yasuaki*; Fujii, Takashi*; Kanazawa, Seiji*

no journal, , 

no abstracts in English

Oral presentation

Percolation simulation of lightning discharge and analysis of laser-guided discharges

Sasaki, Akira; Torii, Tatsuo; Kato, Susumu*; Takahashi, Eiichi*; Fujii, Takashi*; Kanazawa, Seiji*; Kishimoto, Yasuaki*

no journal, , 

no abstracts in English

Oral presentation

Discharge simulation using the percolation model

Sasaki, Akira; Torii, Tatsuo; Takahashi, Eiichi*; Kato, Susumu*; Kishimoto, Yasuaki*; Kanazawa, Seiji*; Fujii, Takashi*

no journal, , 

no abstracts in English

Oral presentation

Modeling of the temporal and spatial structure of discharge

Sasaki, Akira; Torii, Tatsuo; Takahashi, Eiichi*; Kato, Susumu*; Fujii, Takashi*; Kanazawa, Seiji*; Kishimoto, Yasuaki*

no journal, , 

no abstracts in English

Oral presentation

Percolation modeling of the dynamics of discharge in SF$$_6$$

Sasaki, Akira; Torii, Tatsuo; Kato, Susumu*; Takahashi, Eiichi*; Kanazawa, Seiji*; Fujii, Takashi*; Kishimoto, Yasuaki*

no journal, , 

no abstracts in English

Oral presentation

High-speed synthesis of carbon nano-wall by carbon plasma

Kaneda, Miyu*; Mori, Minami*; Takahashi, Masakuni*; Fukada, Yukimasa; Yoshii, Kenji; Ikeda, Naoshi*; Kano, Jun*; Fujii, Tatsuo*

no journal, , 

no abstracts in English

Oral presentation

High-speed synthesis of carbon nano-wall by carbon plasma

Kaneda, Miyu*; Mori, Minami*; Takahashi, Masakuni*; Fukada, Yukimasa; Yoshii, Kenji; Ikeda, Naoshi*; Kano, Jun*; Fujii, Tatsuo*

no journal, , 

no abstracts in English

Oral presentation

Percolation simulation of electrical discharges

Sasaki, Akira; Takahashi, Eiichi*; Kato, Susumu*; Kishimoto, Yasuaki*; Fujii, Takashi*; Kanazawa, Seiji*; Torii, Tatsuo

no journal, , 

no abstracts in English

Oral presentation

Analysis of discharge using a simulation based on time-dependent percolation model

Sasaki, Akira; Torii, Tatsuo; Kato, Susumu*; Takahashi, Eiichi*; Kishimoto, Yasuaki*; Fujii, Takashi*; Kanazawa, Seiji*; Odagaki, Takashi*

no journal, , 

no abstracts in English

Oral presentation

Parameter dependence of simulation of discharge in SF$$_6$$ based on percolation model

Sasaki, Akira; Torii, Tatsuo; Kato, Susumu*; Takahashi, Eiichi*; Fujii, Takashi*; Kanazawa, Seiji*

no journal, , 

no abstracts in English

Oral presentation

Modeling of the temporal and spatial structure of discharge

Sasaki, Akira; Torii, Tatsuo; Takahashi, Eiichi*; Kato, Susumu*; Fujii, Takashi*; Kanazawa, Seiji*

no journal, , 

no abstracts in English

Oral presentation

Valence control of charge and orbital frustrated system YbFe$$_{2}$$O$$_{4}$$ with electrochemical Li$$^{+}$$ intercalation

Murase, Satoshi*; Yoshikawa, Yumi*; Fukada, Yukimasa*; Ikeda, Naoshi*; Teranishi, Takashi*; Kano, Jun*; Fujii, Tatsuo*; Tsuji, Takuya; Yoshii, Kenji

no journal, , 

Oral presentation

The Effect of electric field on carbon nano-wall synthesis and applied research

Kaneda, Miyu*; Mori, Minami*; Takahashi, Masakuni*; Fukada, Yukimasa; Yoshii, Kenji; Fukuda, Tatsuo; Yoshigoe, Akitaka; Kobata, Masaaki; Ikeda, Naoshi*; Kano, Jun*; et al.

no journal, , 

no abstracts in English

18 (Records 1-18 displayed on this page)
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