JOPSS - Search Results

Journal Articles

Synthesis of carbon nanowalls using plasma-irradiated solid carbon and absorption of Cs in water

Fukada, Yukimasa; Aoyagi, Yumito*; Yokoyama, Misaki*; Horibe, Yoichi*; Kano, Jun*; Kaneda, Miyu*; Fujii, Tatsuo*; Yoshigoe, Akitaka; Kobata, Masaaki; Fukuda, Tatsuo; et al.

Journal of Electronic Materials, 54, p.686 - 692, 2025/01

https://doi.org/10.1007/s11664-024-11586-9

Times Cited Count：0 Percentile：0.00(Engineering, Electrical & Electronic)

no abstracts in English

Journal Articles

Towards innovation to transform radioactive waste into resources; A Way of converting heat and radiation into electricity

Ieda, Junichi; Fukada, Yukimasa; Fukuda, Tatsuo

Nihon Genshiryoku Gakkai-Shi ATOMO, 66(10), p.521 - 524, 2024/10

https://doi.org/10.3327/jaesjb.66.10_521

no abstracts in English

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

https://doi.org/10.1016/j.jpcs.2021.110468

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

Analysis of glass behavior of Lu $_{2}$ Fe $_{3}$ O $_{7}$ with distributed equivalent circuit model

Fukada, Yukimasa*; Fukuyama, Ryota*; Fujiwara, Kosuke*; Yoshii, Kenji; Shigematsu, Kei*; Azuma, Masaki*; Ikeda, Naoshi*

Journal of the Physical Society of Japan, 90(2), p.024710_1 - 024710_6, 2021/02

https://doi.org/10.7566/JPSJ.90.024710

Times Cited Count：2 Percentile：21.70(Physics, Multidisciplinary)

We report an analysis of the dielectric glasslike state of the spin- and charge-ordered system Lu $_{2}$ Fe $_{3}$ O $_{7}$ , which has structural and physical properties analogous to those of the electronic ferroelectrics Fe $_{2}$ O $_{4}$ (: rare earth). Aging and memory effects of resistivity were found in the electric impedance response. We performed a numerical analysis with equivalent electric circuits that have a logarithmic Gaussian distribution of resistance and capacitance. The distribution parameters well explained the glassy nature of the electric and dielectric properties between 100 and 200 K and the distribution variations of charge- and magnetic-ordered domains underlying the glass nature.

Journal Articles

Observation of momentum-resolved charge fluctuations proximate to the charge-order phase using resonant inelastic X-ray scattering

Yoshida, Masahiro*; Ishii, Kenji; Naka, Makoto*; Ishihara, Sumio*; Jarrige, I.*; Ikeuchi, Kazuhiko*; Murakami, Yoichi*; Kudo, Kazutaka*; Koike, Yoji*; Nagata, Tomoko*; et al.

Scientific Reports (Internet), 6, p.23611_1 - 23611_8, 2016/03

https://doi.org/10.1038/srep23611

Times Cited Count：1 Percentile：10.54(Multidisciplinary Sciences)

Journal Articles

Magnetoelectric effect driven by magnetic domain modification in LuFe $_{2}$ O $_{4}$

Kambe, Takashi*; Fukada, Yukimasa*; Kano, Jun*; Nagata, Tomoko*; Okazaki, Hiroyuki*; Yokoya, Takayoshi*; Wakimoto, Shuichi; Kakurai, Kazuhisa; Ikeda, Naoshi*

Physical Review Letters, 110(11), p.117602_1 - 117602_5, 2013/03

https://doi.org/10.1103/PhysRevLett.110.117602

Times Cited Count：26 Percentile：75.31(Physics, Multidisciplinary)

Oral presentation

Direct energy conversion using Pt/Ga $_{2}$ O $_{3}$ Schottky junction from gamma ray region

Fukuda, Tatsuo; Fukada, Yukimasa; Kobata, Masaaki; Yoshii, Kenji; Shobu, Takahisa; Tominaga, Aki; Yamashita, Yoshiyuki*; Tanida, Hajime; Yaita, Tsuyoshi

no journal, ,

no abstracts in English

Oral presentation

None

Fukada, Yukimasa; Kawasaki, Ikuto; Fukuda, Tatsuo; Yu, H.*; Fujiwara, Kosuke*; Matsumura, Daiju; Yoshii, Kenji; Ikeda, Naoshi*

no journal, ,

no abstracts in English

Oral presentation

None

Fujiwara, Kosuke*; Yu, H.*; Kimura, Akito*; Fukada, Yukimasa; Ikeda, Naoshi*; Okimoto, Yoichi*; Frontzek, M. D.*; Kakurai, Kazuhisa*

no journal, ,

no abstracts in English

Oral presentation

Doping effect on CNW synthesized from high-density carbon plasma

Kaneda, Miyu*; Kayahara, Takaki*; Ikeda, Naoshi*; Fukada, Yukimasa; Yoshii, Kenji; Kano, Jun*; Fujii, Tatsuo*

no journal, ,

Oral presentation

Review on direct energy conversion using semiconductor junction from gamma ray region

Fukuda, Tatsuo; Fukada, Yukimasa; Kobata, Masaaki; Yoshii, Kenji; Shobu, Takahisa; Tominaga, Aki; Ieda, Junichi; Matsumura, Daiju; Yaita, Tsuyoshi

no journal, ,

no abstracts in English

Oral presentation

Direct energy conversion using Perovskite solar cell in synchrotron X-ray region

Fukuda, Tatsuo; Fukada, Yukimasa; Yoshii, Kenji; Shobu, Takahisa; Tominaga, Aki; Kobata, Masaaki; Ieda, Junichi; Shirai, Yasuhiro*; Yanagida, Masatoshi*; Miyano, Kenjiro*; et al.

no journal, ,

Direct energy conversion has been investigated so far using Ni/SiC or Pt/ GaO Schottky junctions with the irradiation of monochromatized synchrotron X-rays. From current-voltage measurements, the energy conversion efficiencies reached up to ~1.6%. Recently we have started measurements using Perovskite solar cell, which contains relatively heavy lead atom to absorb X-rays and is easier to cover wide area. In this talk we would like to discuss the results comparing with the Ni/SiC or Pt/GaO case.

Oral presentation

None

Fukada, Yukimasa; Aoyagi, Yumito*; Yokoyama, Misaki*; Horibe, Yoichi*; Kano, Jun*; Kaneda, Miyu*; Fujii, Tatsuo*; Yoshigoe, Akitaka; Kobata, Masaaki; Fukuda, Tatsuo; et al.

no journal, ,

no abstracts in English

Oral presentation

Analysis of electromagnetic correlation phenomena of Fe $_{2}$ O $_{4}$ system using impedance spectroscopy

Fukada, Yukimasa*; Yoshii, Kenji; Fujiwara, Kosuke*; Fukuyama, Ryota*; Ikeda, Naoshi*

no journal, ,

no abstracts in English

Oral presentation

The Analysis of physical property of Lu ${_2}$ Fe ${_3}$ O ${_7}$ using impedance spectroscopy

Fukada, Yukimasa*; Fukuyama, Ryota*; Fujiwara, Kosuke*; Yoshii, Kenji; Ikeda, Naoshi*

no journal, ,

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

Effect of the bias electric field on the electrical properties of LuFe $_{2}$ O $_{4}$

Fukada, Yukimasa; Fukuda, Tatsuo; Yoshii, Kenji; Kimura, Akito*; Park, G.*; Ikeda, Naoshi*

no journal, ,

no abstracts in English

Oral presentation

Negative magnetization in some perovskite and spinel oxides

Yoshii, Kenji; Fukada, Yukimasa; Fukuda, Tatsuo; Tsuji, Takuya; Matsumura, Daiju; Yaita, Tsuyoshi; Ikeda, Naoshi*

no journal, ,

no abstracts in English

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

Oral presentation

None

Yu, H.*; Yano, Yuta*; Park, G.*; Okimoto, Yoichi*; Shimanuki, Shuhei*; Fukada, Yukimasa; Fujiwara, Kosuke*; Ikeda, Naoshi*

no journal, ,

no abstracts in English

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Synthesis of carbon nanowalls using plasma-irradiated solid carbon and absorption of Cs in water

Towards innovation to transform radioactive waste into resources; A Way of converting heat and radiation into electricity

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

Analysis of glass behavior of Lu $_{2}$ Fe $_{3}$ O $_{7}$ with distributed equivalent circuit model

Observation of momentum-resolved charge fluctuations proximate to the charge-order phase using resonant inelastic X-ray scattering

Magnetoelectric effect driven by magnetic domain modification in LuFe $_{2}$ O $_{4}$

Direct energy conversion using Pt/Ga $_{2}$ O $_{3}$ Schottky junction from gamma ray region

None

None

Doping effect on CNW synthesized from high-density carbon plasma

Review on direct energy conversion using semiconductor junction from gamma ray region

Direct energy conversion using Perovskite solar cell in synchrotron X-ray region

None

Analysis of electromagnetic correlation phenomena of Fe $_{2}$ O $_{4}$ system using impedance spectroscopy

The Analysis of physical property of Lu ${_2}$ Fe ${_3}$ O ${_7}$ using impedance spectroscopy

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

Effect of the bias electric field on the electrical properties of LuFe $_{2}$ O $_{4}$

Negative magnetization in some perovskite and spinel oxides

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

None