Synchrotron X-ray and ab initio studies of beta-Si3N4.
Almost absorption- and extinction-free single-crystal synchrotron X-ray diffraction data were measured at 150, 200 and 295 K for beta-Si3N4, silicon nitride, at a wavelength of 0.7 A. The true symmetry of this material has been the subject of minor controversy for several decades. No compelling evidence favouring the low-symmetry P6(3) model was identified in this study.
du Boulay
D
D
Ceramics Research Laboratory, Nagoya Institute of Technology, Asahigaoka, Tajimi 507-0071, Japan.
Ishizawa
N
N
Atake
T
T
Streltsov
V
V
Furuya
K
K
Munakata
F
F