February 1, 2000
Author(s)
I E. Grey, Robert S. Roth
… structures have been prepared by doping Ca 2 Ta 2 O 7 with Sm 2 Ti 2 O 7 . Trigonal 6-layer (6T) and monoclinic 5-layer (5M) … O 7 , has a = 12.763(1), b = 7.310(1), c = 30.190(1) , b = 94.09 (1), Z=20, space group C2. The 6T structure is related … Ca 2 Ta 2 O 7 , crystal structure, weberite polytypes …