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.
|Number of pages
|Journal of Physics and Chemistry of Solids
|Published - 1999
|Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7) - Tokyo, Jpn
Duration: 1998 Nov 24 → 1998 Nov 27