February 1, 2000
Author(s)
I E. Grey, Robert S. Roth
… 1.89 Ta 1.86 Sm 0.16 Ti 0.10 O 7 , has a = 7.353(1), c = 36.264 (1) , Z = 12, space group P31, and the 5M phase, Ca … giving an octahedral framework of composition [Ta 2 O 7 ] 4- in which the 8-coordinated calcium atoms are distributed. …