JOPSS - Search Results

Journal Articles

Existence of local polar domains in perovskite oxyfluoride, BaFeOF

Katsumata, Tetsuhiro*; Suzuki, Ryo*; Sato, Naoto*; Oda, Ryoya*; Motoyama, Shingo*; Suzuki, Shumpei*; Nakashima, Mamoru*; Inaguma, Yoshiyuki*; Mori, Daisuke*; Aimi, Akihisa*; et al.

Chemistry of Materials, 36(8), p.3697 - 3704, 2024/04

https://doi.org/10.1021/acs.chemmater.3c03275

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

A perovskite-type oxynitride BaFeOF was prepared by high-pressure synthesis. Since the SHG signal was observed in the obtained material, suggesting the existence of spontaneous polarization, the mechanism of polarization was investigated by synchrotron high-energy X-ray diffraction. The obtained pair distribution functions were fitted, and a local polarization mechanism with different orientations was found. Since BaFeOF is also a magnetic material, a magnetic domain and a ferroelectric domain are considered to coexist.

Journal Articles

Synthesis of new perovskite-type oxyfluorides, BaInO $_{2}$ F and comparison of the structure among perovskite-type oxyfluorides

Katsumata, Tetsuhiro*; Suzuki, Ryo*; Sato, Naoto*; Suzuki, Shumpei*; Nakashima, Mamoru*; Inaguma, Yoshiyuki*; Mori, Daisuke*; Aimi, Akihisa*; Yoneda, Yasuhiro

Journal of Solid State Chemistry, 279, p.120919_1 - 120919_8, 2019/11

https://doi.org/10.1016/j.jssc.2019.120919

Times Cited Count：11 Percentile：56.07(Chemistry, Inorganic & Nuclear)

Journal Articles

Relation between the structure and tolerance factor for perovskite-type oxyfluorides

Katsumata, Tetsuhiro*; Inaguma, Yoshiyuki*; Mori, Daisuke*; Aimi, Akihisa*; Yoneda, Yasuhiro

Seramikkusu, 54(9), p.629 - 632, 2019/09

Crystal structure analysis of ABO perovskite-type oxyfluoride were performed by using high-energy synchrotron X-ray measurement. The effect of tolerance factor appeared in the local structure. The average structure of perovskite-type oxyfluoride found to be a cubic structure in the traditional crystal structure analysis.

Journal Articles

Synthesis, direct formation under high pressure, structure, and electronic properties of LiNbO $_{3}$ -type oxide PbZnO $_{3}$

Mori, Daisuke*; Tanaka, Kie*; Saito, Hiroyuki; Kikegawa, Takumi*; Inaguma, Yoshiyuki*

Inorganic Chemistry, 54(23), p.11405 - 11410, 2015/12

https://doi.org/10.1021/acs.inorgchem.5b02049

Times Cited Count：30 Percentile：83.21(Chemistry, Inorganic & Nuclear)

Journal Articles

Melting of Pb charge glass and simultaneous Pb-Cr charge transfer in PbCrO $_{3}$ as the origin of volume collapse

Yu, R.*; Hojo, Hajime*; Watanuki, Tetsu; Mizumaki, Masaichiro*; Mizokawa, Takashi*; Oka, Kengo*; Kim, H.*; Machida, Akihiko; Sakaki, Koji*; Nakamura, Yumiko*; et al.

Journal of the American Chemical Society, 137(39), p.12719 - 12728, 2015/10

https://doi.org/10.1021/jacs.5b08216

Times Cited Count：35 Percentile：69.64(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

Synthesis, structural transformation, thermal stability, valence state, and magnetic and electronic properties of PbNiO $_{3}$ with perovskite- and LiNbO $_{3}$ -type structures

Inaguma, Yoshiyuki*; Tanaka, Kie*; Tsuchiya, Takeshi*; Mori, Daisuke*; Katsumata, Tetsuhiro*; Oba, Tomonori*; Hiraki, Koichi*; Takahashi, Toshihiro*; Saito, Hiroyuki

Journal of the American Chemical Society, 133(42), p.16920 - 16929, 2011/09

https://doi.org/10.1021/ja206247j

Times Cited Count：92 Percentile：86.75(Chemistry, Multidisciplinary)

Oral presentation

Polarity and phase transition in a perovskite-type oxyfluoride AgTiOF

Inaguma, Yoshiyuki*; Katsumata, Tetsuhiro*; Takami, Takuya*; Mimura, Kazunori*; Kobayashi, Shintaro*; Kawaguchi, Shogo*; Yoneda, Yasuhiro

no journal, ,

While most of the reported Perovskite-type complex anionic acid fluorides have a cubic crystal structure, AgTiOF has a tetragonal structure and the anion octahedron is tilted in anti-phase. In order to clarify why these differences arise, we investigated the average structure, local structure, polarity, and their interrelationships, and clarified the origin of the polarity. Optical second harmonic (SHG) measurements were performed, and the SHG signal was observed at room temperature, suggesting the possibility of polarity. In addition, the corresponding phase transition was observed by high-temperature X-ray diffraction measurements. From these results, it is necessary to analyze the local structure using a structural model with microscopic polarization.

Oral presentation

Unusual volume change in Pb $_{1-x}$ SrCrO

Yu, R.*; Oka, Kengo*; Hojo, Hajime*; Azuma, Masaki*; Mizumaki, Masaichiro*; Agui, Akane; Inaguma, Yoshiyuki*; Mori, Daisuke*

no journal, ,

no abstracts in English

Oral presentation

Local structure of perovskite-type oxyfluorides, BaFeOF and BaInOF

Katsumata, Tetsuhiro*; Inaguma, Yoshiyuki*; Aimi, Akihisa*; Yoneda, Yasuhiro

no journal, ,

The search for novel materials requires the search for compounds with compositional flexibility. Mixed anion compounds such as perovskite oxyfluorides are promising materials. In these compounds, the relationship between structure and tolerance factor t is interesting. In this study, perovskite oxyfluorides with various t, BaInOF (t=0.97), BaScOF (t=0.99) and BaFeOF, were synthesized and their local and average structures were investigated by X-ray diffraction and pair distribution (PDF) methods, respectively. Furthermore, the relationship between the structure and the tolerance factor t was discussed.

Oral presentation

Pb-Cr charge transfer in Pb $_{1-x}$ SrCrO

Yu, R.*; Oka, Kengo*; Hojo, Hajime*; Mizumaki, Masaichiro*; Agui, Akane; Mori, Daisuke*; Inaguma, Yoshiyuki*; Azuma, Masaki*

no journal, ,

no abstracts in English

Presentation/Publication Type

Journal/Book Title

Meeting title

First Author

Keyword

Language

Publication Year

Held year of conference

Existence of local polar domains in perovskite oxyfluoride, BaFeOF

Synthesis of new perovskite-type oxyfluorides, BaInO $_{2}$ F and comparison of the structure among perovskite-type oxyfluorides

Relation between the structure and tolerance factor for perovskite-type oxyfluorides

Synthesis, direct formation under high pressure, structure, and electronic properties of LiNbO $_{3}$ -type oxide PbZnO $_{3}$

Melting of Pb charge glass and simultaneous Pb-Cr charge transfer in PbCrO $_{3}$ as the origin of volume collapse

Synthesis, structural transformation, thermal stability, valence state, and magnetic and electronic properties of PbNiO $_{3}$ with perovskite- and LiNbO $_{3}$ -type structures

Polarity and phase transition in a perovskite-type oxyfluoride AgTiOF

Unusual volume change in Pb $_{1-x}$ SrCrO

Local structure of perovskite-type oxyfluorides, BaFeOF and BaInOF

Pb-Cr charge transfer in Pb $_{1-x}$ SrCrO