@article{zu214063,
          number = {8},
           title = {?????? ?? ???????i??? ????????? Sr6Nb4SnO18 ? Ba5KNb5O18},
          author = {?. ?. ????? and ?. ?. ???????? and ?. ?. ?????? and ?. ?. ?????????? and ?. ?. ???????????? and ?. ?. ?????},
       publisher = {??????????? ???????? ????},
            year = {2013},
           pages = {150--155},
         journal = {???????? ???????????? ???????? ???? ???????},
             url = {http://eprints.zu.edu.ua/14063/},
        abstract = {??????????? ??????? Sr6Nb4SnO18 ? Ba5KNb5O18, ??????? ???????i?????? ???????i? ?? ???????? ????????? ?? ???????i ????????i?????i??i ????????? (???). ??????????? ??????i??? ?? ??? ?? ???????????? ???? Ba6Nb4TiO18. ????????? ???????????? ???i???, ??: a = 0,5661(1), c = 4,186(1) (Sr6Nb4SnO18) ?? a = 0,57840(7), c = 4,2532(5)
(Ba5KNb5O18); ?????????? ????? R-3m. ???????? ??????i? ????????i?????i RB ???i?????? 0,073 (Sr6Nb4SnO18) i 0,079 (Ba5KNb5O18). ???????i?????? ??????????i ??? AII
6 Nb4BIVO18 (AII - Ba, Sr; BIV - Ti, Sn) ?? ??????????? ????????????? ????? - ?????? ???.}
}