Diffuse Scattering Due to Out-of-Step Configurations of Oxygen Atoms in a TiO0.42 Crystal

Autor:	Makoto Hirabayashi, Tetsuji Arai
Rok vydání:	1977
Předmět:	Materials science Condensed matter physics Transition temperature General Physics and Astronomy chemistry.chemical_element Molecular physics Reciprocal lattice Oxygen atom Diffuse scattering chemistry Lattice (order) Hexagonal lattice Neutron Titanium
Zdroj:	Journal of the Physical Society of Japan. 42:1965-1972
ISSN:	1347-4073 0031-9015
DOI:	10.1143/jpsj.42.1965
Popis:	The short range configuration of oxygen atoms in a TiO 0.42 crystal has been studied by analyses of X-ray and neutron diffuse scattering. The diffuse scattering is distributed on the planes normal to the c * axis around most of the reciprocal lattice points of H – K =3 n , L =odd and H – K =3 n ±1, L ≠0. The diffuse scattering around each point has a hexagonal symmetry in the L =odd planes just above the interstitial order-disorder transition temperature 575°C. The intensity maximum becomes circular and shifts gradually apart from the reciprocal lattice point with increasing temperature. The intensity distributions are interpreted in terms of the correlative configuration of out-of-steps of the oxygen distribution accompanying the static distortion of titanium lattice.
Databáze:	OpenAIRE
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