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Journal Articles

Polarization dependence of soft X-ray absorption spectroscopy on the heavy fermion superconductor CeNi$$_{2}$$Ge$$_{2}$$

Fujiwara, Hidenori*; Nakatani, Yasuhiro*; Aratani, Hidekazu*; Kanai-Nakata, Yuina*; Yamagami, Kohei*; Hamamoto, Satoru*; Kiss, Takayuki*; Sekiyama, Akira*; Tanaka, Arata*; Ebihara, Takao*; et al.

New Physics; Sae Mulli, 73(12), p.1062 - 1066, 2023/12

Journal Articles

Local structure analysis of Bi$$_{0.5}$$Na$$_{0.5}$$TiO$$_3-$$BaTiO$$_3$$ solid solutions

Yoneda, Yasuhiro; Kobayashi, Toru; Tsuji, Takuya; Matsumura, Daiju; Saito, Yuji; Noguchi, Yuji*

Japanese Journal of Applied Physics, 62(SM), p.SM1006_1 - SM1006_8, 2023/11

 Times Cited Count:4 Percentile:50.15(Physics, Applied)

Bi$$_{0.5}$$Na$$_{0.5}$$TiO$$_3-$$BaTiO$$_3$$ (BNT$$-$$BT) solid solutions have been extensively studied because they exhibit good piezoelectric properties. In addition, a wide variety of phases are observed depending on the BT composition. Soft X-ray absorption spectroscopy and high-energy X-ray diffraction experiments of BNT$$-$$BT solid solutions were performed using synchrotron radiation. From the electronic structure and local structure of BNT$$-$$BT solid solution, the substitution effect of BT occurred mainly at the A site, which is the substitution site of Ba. The rhombohedral strain of the TiO$$_6$$ octahedron did not change with the change in BT composition, suggesting that the change in the electronic structure at the O-$$K$$ absorption edge is due to the change in the hybridization state.

Journal Articles

Impact of the ground-state 4${it f}$ symmetry for anisotropic ${it cf}$ hybridization in the heavy-fermion superconductor CeNi$$_{2}$$Ge$$_{2}$$

Fujiwara, Hidenori*; Nakatani, Yasuhiro*; Aratani, Hidekazu*; Kanai-Nakata, Yuina*; Yamagami, Kohei*; Hamamoto, Satoru*; Kiss, Takayuki*; Yamasaki, Atsushi*; Higashiya, Atsushi*; Imada, Shin*; et al.

Physical Review B, 108(16), p.165121_1 - 165121_10, 2023/10

 Times Cited Count:0 Percentile:0.00(Materials Science, Multidisciplinary)

Journal Articles

Revising the 4${it f}$ symmetry in CeCu$$_{2}$$Ge$$_{2}$$; Soft X-ray absorption and hard X-ray photoemission spectroscopy

Aratani, Hidekazu*; Nakatani, Yasuhiro*; Fujiwara, Hidenori*; Kawada, Moeki*; Kanai-Nakata, Yuina*; Yamagami, Kohei*; Fujioka, Shuhei*; Hamamoto, Satoru*; Kuga, Kentaro*; Kiss, Takayuki*; et al.

Physical Review B, 98(12), p.121113_1 - 121113_6, 2018/09

AA2018-0352.pdf:1.16MB

 Times Cited Count:5 Percentile:22.43(Materials Science, Multidisciplinary)

Journal Articles

Preferred site occupation of 3$$d$$ atoms in Ni$$_{x}$$Fe$$_{4-x}$$N (${it x}$ = 1 and 3) films revealed by X-ray absorption spectroscopy and magnetic circular dichroism

Takata, Fumiya*; Ito, Keita*; Takeda, Yukiharu; Saito, Yuji; Takanashi, Koki*; Kimura, Akio*; Suemasu, Takashi*

Physical Review Materials (Internet), 2(2), p.024407_1 - 024407_5, 2018/02

 Times Cited Count:15 Percentile:45.34(Materials Science, Multidisciplinary)

Journal Articles

X-ray absorption magnetic circular dichroism of (La,Ce)MnO$$_{3}$$ thin films

Yanagida, Tsuyoshi*; Saito, Yuji; Takeda, Yukiharu; Fujimori, Atsushi*; Tanaka, Hidekazu*; Kawai, Tomoji*

Physical Review B, 79(13), p.132405_1 - 132405_4, 2009/04

AA2017-0612.pdf:0.42MB

 Times Cited Count:11 Percentile:43.82(Materials Science, Multidisciplinary)

Creating a bipolarity of semiconductors has been a key technology to develop recent advanced semiconductor devices. Although theoretical calculation predicts the presence of ferromagnetic electron-doped manganites with doping tetravalent cations, the ferromagnetic origin in experiments has been controversial due to the lack of direct experimental evidence. Here, we investigate the ferromagnetism in (La,Ce)MnO$$_{3}$$ thin films by measuring the magnetic circular dichroism in soft X-ray absorption (XMCD). The XMCD measurements clarified that the ferromagnetism is not caused by the presence of Mn$$^{2+}$$ but by self-hole doping for manganese.

Journal Articles

Experimental technique for radiative-process-resolved X-ray absorption spectroscopy at the inner-shell excitation thresholds

Muramatsu, Yasuji; Ueno, Yuko*; Sasaki, Teikichi; Gullikson, E. M.*; Perera, R. C. C.*

Journal of Synchrotron Radiation, 8(2), p.369 - 371, 2002/03

 Times Cited Count:2 Percentile:20.05(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Soft X-ray emission and absorption spectra in the C K region of sputtered amorphous carbon films

Muramatsu, Yasuji; Hirono, Shigeru*; Umemura, Shigeru*; Ueno, Yuko*; Hayashi, Takayoshi*; Grush, M. M.*; Gullikson, E. M.*; Perera, R. C. C.*

Carbon, 39(9), p.1403 - 1407, 2001/06

 Times Cited Count:19 Percentile:59.04(Chemistry, Physical)

no abstracts in English

Journal Articles

Soft X-ray emission and absorption spectra in the O K region of oxygen incorporated in microporous carbon

Muramatsu, Yasuji; Ueno, Yuko*; Ishiwata, Yoichi*; Eguchi, Ritsuko*; Watanabe, Masamitsu*; Shin, S.*; Perera, R. C. C.*

Carbon, 39(9), p.1359 - 1402, 2001/06

no abstracts in English

Journal Articles

Chemical bonding state analysis of silicon carbide layers in Mo/SiC/Si multilayer mirrors by soft X-ray emission and absorption spectroscopy

Muramatsu, Yasuji; Takenaka, Hisataka*; Ueno, Yuko*; Gullikson, E. M.*; Perera, R. C. C.*

Applied Physics Letters, 77(17), p.2653 - 2655, 2000/10

 Times Cited Count:13 Percentile:50.94(Physics, Applied)

no abstracts in English

Oral presentation

Study on the aggregation structure of HONTA in the n-dodecane media by soft-X ray absorption spectroscopy

Miyazaki, Yasunori; Ishii, Katsunori; Sano, Yuichi; Toigawa, Tomohiro; Nagasaka, Masanari*; Igaki, Sho*; Gejo, Tatsuo*; Kumaki, Fumitoshi*; Adachi, Junichi*

no journal, , 

no abstracts in English

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