Ion mobility in the fluorite solid solutions 50PbF2-30BiF3-20K(Na)F according to 19F, 23Na NMR data
Ion mobility in solid solutions of the fluorite structure 50PbF2-30BiF3-20KF (Ⅰ) and 50PbF2-30BiF3-20NaF (Ⅱ) was studied by NMR method.Analysis of 19F,23Na NMR spectra made it possible to reveal the character of ion motions in the fluoride and sodium sublattices with temperature variation,to determine the types and temperature ranges in which they took place.It was found that the dominant form of ionic mobility in the samples Ⅰ and Ⅱ above 380 K was the diffusion of fluoride and sodium ions.According to preliminary results of electro-physical studies,the conductivity reached values of~ 2×10-2-10-3 S/cm above 500 K.The solid solutions Ⅰ and Ⅱ can be recommended as a basis for use in the development of new functional materials.
solid solutions 50PbF2-30BiF3-20K(Na)F ion mobility ionic conductivity 19F, 23Na NMR spectra functional materials
V.Ya.Kavun A.B.Slobodyuk I.A.Telin R.M.Yaroshenko I.G.Maslennikova V.K.Goncharuk V.I.Kharchenko
Institute of Chemistry, Far Eastern Branch of RAS, Vladivostok, Russia Institute of Chemistry, Far Eastern Branch of RAS, Vladivostok, Russia ;Far-Eastern Federal Universi
国际会议
北京
英文
71-73
2012-10-26（万方平台首次上网日期，不代表论文的发表时间）