M. Parras et al., MICROSTRUCTURAL CHARACTERIZATION OF BAMNO3-Y ESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-0.12) - EVIDENCE FOR A NEW POLYTYPE (21R), Journal of solid state chemistry, 113(1), 1994, pp. 78-87
Compositional variations in BaMnO3-y perovskite-related materials in t
he 0.08 less-than-or-equal-to y less-than-or-equal-to 0.12 range are a
ccommodated either by means of the formation of an ordered rhombohedra
l phase for y = 0.10 (15R type) or by means of disordered intergrowths
of both 15R and a new polytype of nominal composition BaMnO2.928. Thi
s phase can be described as formed by 21 layers per unit cell, followi
ng the stacking sequence . . . (chhhhhh)3 . . . . (C) 1994 Academic Pr
ess, Inc.