TY - JOUR
T1 - Nuclear density distribution in KH2PO4 determined by the combined software system REMEDY
AU - Kumazawa, S.
AU - Yamamura, S.
AU - Nishibori, E.
AU - Takata, M.
AU - Sakata, M.
AU - Izumi, F.
AU - Ishii, Y.
N1 - Funding Information:
This work was supported by the Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan and also by JAERI for which the authors’ thanks are due.
PY - 1999
Y1 - 1999
N2 - The nuclear density distributions for both paraelectric and ferroelectric phases of KH2PO4 (KDP) were obtained by the software system named REMEDY, which is a combined program system of Rietveld refinement, RIETAN-98, and the maximum entropy method, MEND for neutron diffraction. The experimental data were collected by HRPD at JRR-3M. The specimen used was non-deuterated KDP, which caused no real problem in finding out the accurate proton distribution despite the higher background level. The results show high contrast as for proton distributions; symmetric double maxima between two oxygen atoms for a disordered paraelectric phase and a harmonic single maximum for an ordered ferroelectric phase.
AB - The nuclear density distributions for both paraelectric and ferroelectric phases of KH2PO4 (KDP) were obtained by the software system named REMEDY, which is a combined program system of Rietveld refinement, RIETAN-98, and the maximum entropy method, MEND for neutron diffraction. The experimental data were collected by HRPD at JRR-3M. The specimen used was non-deuterated KDP, which caused no real problem in finding out the accurate proton distribution despite the higher background level. The results show high contrast as for proton distributions; symmetric double maxima between two oxygen atoms for a disordered paraelectric phase and a harmonic single maximum for an ordered ferroelectric phase.
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U2 - 10.1016/S0022-3697(99)00128-6
DO - 10.1016/S0022-3697(99)00128-6
M3 - Conference article
AN - SCOPUS:0032590540
SN - 0022-3697
VL - 60
SP - 1407
EP - 1409
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 8
T2 - Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7)
Y2 - 24 November 1998 through 27 November 1998
ER -