In:
Acta Physica Sinica, Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences, Vol. 39, No. 2 ( 1990), p. 231-
Abstract:
The one-dimensional incommensurate modulated structure of ankangite (Ba0.827(Ti5.827V2.294Cr0.053)O16), a mineral recently discovered in China, has been studied by electron diffraction. Its average structure belongs to tetragonal system and unit cell parameters of the average structure are a= 10.2?, c=2.96?. The modulated wave spreading along direction c has the wave length of λ = 2.30c. The features of electron diffraction patterns are analysed in detail. The possible mechanism of the incommensurate modulated structure in ankangite is discussed and a modulated structure model of vacancy-displacive type is proposed. The disorder structure caused by the difference among initial phases for displacement functions from place to place is discussed.
Type of Medium:
Online Resource
ISSN:
1000-3290
,
1000-3290
Language:
Unknown
Publisher:
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Publication Date:
1990
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