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Journal Articles

Insight on the mechanical properties of hierarchical porous calcium-silicate-hydrate pastes according to the Ca/Si molar ratio using ${it in situ}$ synchrotron X-ray scattering and nanoindentation test

Im, S.*; Jee, H.*; Suh, H.*; Kanematsu, Manabu*; Morooka, Satoshi; Choe, H.*; Nishio, Yuhei*; Machida, Akihiko*; Kim, J.*; Lim, S.*; et al.

Construction and Building Materials, 365, p.130034_1 - 130034_18, 2023/02

https://doi.org/10.1016/j.conbuildmat.2022.130034
 Times Cited Count：13 Percentile：77.17(Construction & Building Technology)

Journal Articles

Extraction of the bridge function for simple liquids from a molecular dynamics simulation and its application for correcting the pair distribution function

; Chihara, Junzo

Physical Review E, 50(2), p.1317 - 1324, 1994/08

https://doi.org/10.1103/PhysRevE.50.1317
 Times Cited Count：28 Percentile：74.52(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Numerical calculation of the bridge function for soft-sphere supercooled fluids via molecular dynamics simulations

;

Molecular Simulation, 12(3-6), p.421 - 430, 1994/00

https://doi.org/10.1080/08927029408023049
 Times Cited Count：3 Percentile：14.72(Chemistry, Physical)

no abstracts in English

JAEA Reports

Structure, thermodynamics, and dynamical properties of supercooled liquids

JAERI-M 92-181, 126 Pages, 1992/12

JAERI-M-92-181.pdf:3.46MB

no abstracts in English

Oral presentation

X-ray beamline optics for atomic pair-distribution function experiments

Yoneda, Yasuhiro; Ohara, Koji*

no journal, , 

Atomic pair-distribution function (PDF) is one of the local structure analysis techniques. In SPring-8, one can be performed PDF measurements at bending magnet beamlines owing to its high critical energy. We performed a round robin test by using two bending magnet beamlines for PDF analysis. We concluded that the same data sets can be obtained from both beamlines for the conventional local structure analysis. On the other hand, the results of Rietveld analysis are different owing to the resolution of the incident X-ray beam.

Oral presentation

X-ray PDF analysis of BiFeO$$_3$$-Bi(Mg,Ti)O$$_3$$ mixture

Yoneda, Yasuhiro; Wada, Satoshi*

no journal, , 

BiFeO$$_3$$ is a useful ferroelectric material, but it is not easy to reverse the polarization because the rhombohedral structure of the ferroelectric phase is greatly distorted, and attempts have been made to improve the dielectric properties by various additives. BaTiO$$_3$$ and Bi(Mg$$_{0.5}$$Ti$$_{0.5}$$)O$$_3$$ were selected as additives, and structural analysis was performed using synchrotron radiation. BiFeO$$_3$$ has a rhombohedral structure and BaTiO$$_3$$ has a tetragonal structure. Bi(Mg$$_{0.5}$$Ti$$_{0.5}$$)O$$_3$$ has an antiferroelectric orthorhombic structure and is expected to behave as a buffer that binds BiFeO$$_3$$ and BaTiO$$_3$$. The process of averaging the structure from micro to macro was clarified, and various changes were observed depending on the temperature. The flexibility of such a structure reduces the large distortion of BiFeO$$_{3}$$ and enables polarization.

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