Patrick,
Please look up the following references:
J. Appl. Phys. 56(2), 15 july 1984, pp 314-320.
Do note the differences that occur between cell parameters
determined form single crystal and powder diffraction data.
Or does anyone know of a more recent paper?
regards
Jaap Vente
Cinvestav-IPN Unidad Merida
Departamento de Fisica Aplicada
Carretera Ant. a Progreso km 6
Apartado Postal #73 Cordemex
Merida, Yucatan, 97310
Mexico
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