JOPSS - Search Results

Journal Articles

Electronic structure of BaFeO $_{3}$ studied by X-ray spectroscopy

Mizumaki, Masaichiro*; Fujii, Hitoshi*; Yoshii, Kenji; Hayashi, Naoaki*; Saito, Takashi*; Shimakawa, Yuichi*; Uozumi, Takayuki*; Takano, Mikio*

Physica Status Solidi (C), 12(6), p.818 - 821, 2015/06

https://doi.org/10.1002/pssc.201400252

Times Cited Count：10 Percentile：94.45(Physics, Condensed Matter)

We investigated the electronic structure of BaFeO $_{3}$ by using HAXPES and XAS measurements and first principle studies. The experimental and theoretical results indicated that BaFeO $_{3}$ is a negative charge transfer compound. We concluded that the on-site Coulomb energy and the strong hybridization between Fe-3d and O-2p orbitals play a very important role of emergence of negative charge transfer. And we found the new structure in the Fe-2p XPS spectrum and concluded this structure is originated from non-local screening.

Journal Articles

Antiferromagnetic interaction between A'-site Mn spins in A-site-ordered perovskite YMnAlO $_{12}$

Toyama, Takenori*; Saito, Takashi*; Mizumaki, Masaichiro*; Agui, Akane; Shimakawa, Yuichi*

Inorganic Chemistry, 49(5), p.2492 - 2495, 2010/01

https://doi.org/10.1021/ic9024876

Times Cited Count：28 Percentile：74.69(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

Various valence states of square-coordinated Mn in A-site-ordered perovskites

Long, Y.*; Saito, Takashi*; Mizumaki, Masaichiro*; Agui, Akane; Shimakawa, Yuichi*

Journal of the American Chemical Society, 131(44), p.16244 - 16247, 2009/10

https://doi.org/10.1021/ja906668c

Times Cited Count：58 Percentile：79.35(Chemistry, Multidisciplinary)

A-site-ordered perovskites LaMn $_{3}$ Cr $_{4}$ O $_{12}$ and LaMn $_{3}$ Ti $_{4}$ O $_{12}$ were synthesized under high-pressure and high-temperature conditions. The charge formula of LaMn $_{3}$ Cr $_{4}$ O $_{12}$ was found to be LaMn $_{3}$ Cr $_{4}$ O $_{12}$ with Mn $^{3+}$ at the square-coordinated A site. The valence of the A-site Mn ions in LaMnTi $_{4}$ O $_{12}$ appeared to be less than +2, and the charge combination in this compound seemed to be LaMnTi $_{4}$ O $_{12}$ . Although the square-coordinated A site in A-site-ordered perovskites has been widely known to be occupied by Jahn-Teller active Mn $^{3+}$ , the present results show that the valence of Mn at the A site can vary from +3 to possible +1.67.

Journal Articles

Report on the expert committee on development and utilization of phantoms, 2

Saito, Kimiaki; Kinase, Sakae; Suzuki, Toshikazu*; Nakano, Takashi*; Sato, Yuichi*; Ishigure, Nobuhito*; Iwai, Satoshi*

Hoken Butsuri, 42(1), p.38 - 52, 2007/03

https://doi.org/10.5453/jhps.42.38

The expert committee on development and utilization of phantoms had activities from April, 2004 to March, 2006 sponsored by the Japan Health Physics Society. The purpose of the committee was to accumulate and share the latest information concerning phantoms and related technical issues, and to discuss how and for what phantoms should be utilized in future. The committee had twelve meetings and one symposium. Many people took part in the activity including the committee members, observers and other participants; we had a certain number of lectures covering versatile topics and chances to discuss essential problems including sophistication and standardization of phantoms. Some parts of the information we obtained in this activity have been presented in the articles in series.

Journal Articles

Synthesis of materials under high pressure by means of synchrotron X-ray diffraction

Azuma, Masaki*; Saito, Takashi*; Niitaka, Seiji*; Ishiwata, Shintaro*; Kanda, Hiroaki*; Yamada, Ikuya*; Takano, Mikio*; Utsumi, Wataru

Kotai Butsuri, 38(2), p.141 - 150, 2003/02

http://ci.nii.ac.jp/naid/40005669899

no abstracts in English

Journal Articles

Single-crystal growth of transition metal oxides at high pressures of several GPa

Azuma, Masaki*; Saito, Takashi*; Ishiwata, Shintaro*; Yoshida, Hirofumi*; Takano, Mikio*; Kosaka, Yuki*; Takagi, Hidenori*; Utsumi, Wataru

Journal of Physics; Condensed Matter, 14(44), p.11321 - 11324, 2002/11

https://doi.org/10.1088/0953-8984/14/44/475

Times Cited Count：11 Percentile：50.72(Physics, Condensed Matter)

no abstracts in English

Journal Articles

Single crystal growth of the high pressure phase of (VO) $_{2}$ P $_{2}$ O $_{7}$ at 3GPa

Saito, Takashi*; Terashima, Takashi*; Azuma, Masaki*; Takano, Mikio*; Goto, Tadashi*; Ota, Hiroshi*; Utsumi, Wataru; Bordet, P.*; Johnston, D. C.*

Journal of Solid State Chemistry, 153(1), p.124 - 131, 2000/08

https://doi.org/10.1006/jssc.2000.8761

Times Cited Count：37 Percentile：79.52(Chemistry, Inorganic & Nuclear)

no abstracts in English

Journal Articles

In situ X-ray diffraction experiments under high pressures and high temperatures at BL14B1 beamline

Utsumi, Wataru; Katayama, Yoshinori; Mizutani, Takeshi; Shimomura, Osamu; Yamakata, Masaaki*; Azuma, Masaki*; Saito, Takashi*

Nihon Kessho Gakkai-Shi, 42(1), p.59 - 67, 2000/02

https://doi.org/10.5940/jcrsj.42.59

no abstracts in English

Journal Articles

Magnetic properties and single crystal growth of a spin gapped compound, high pressure phase of (VO) $_{2}$ P $_{2}$ O $_{7}$

Saito, Takashi*; Azuma, Masaki*; Takano, Mikio*; Hiroi, Zenji*; Narumi, Yasuo*; Kindo, Koichi*; Utsumi, Wataru

Funtai Oyobi Fummatsu Yakin, 46(9), p.1014 - 1019, 1999/09

https://doi.org/10.2497/jjspm.46.1014

no abstracts in English

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Electronic structure of BaFeO $_{3}$ studied by X-ray spectroscopy

Antiferromagnetic interaction between A'-site Mn spins in A-site-ordered perovskite YMnAlO $_{12}$

Various valence states of square-coordinated Mn in A-site-ordered perovskites

Report on the expert committee on development and utilization of phantoms, 2

Synthesis of materials under high pressure by means of synchrotron X-ray diffraction

Single-crystal growth of transition metal oxides at high pressures of several GPa

Single crystal growth of the high pressure phase of (VO) $_{2}$ P $_{2}$ O $_{7}$ at 3GPa

In situ X-ray diffraction experiments under high pressures and high temperatures at BL14B1 beamline

Magnetic properties and single crystal growth of a spin gapped compound, high pressure phase of (VO) $_{2}$ P $_{2}$ O $_{7}$