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The application of the Rietveld method to a highly strained material with microtwins: TiFeD 1.9
Author(s) -
Thompson P.,
Reilly J. J.,
Hastings J. M.
Publication year - 1989
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s002188988801430x
Subject(s) - orthorhombic crystal system , rietveld refinement , crystallography , crystal twinning , materials science , line (geometry) , chemistry , crystal structure , microstructure , geometry , mathematics
The Rietveld method has been modified to incorporate line broadening from strains, particle size and microtwins. It has been applied to TiFeD 1.9 . The structure was determined to be orthorhombic [ a 0 = 7.0426 (2), b 0 = 6.2371 (2), c 0 = 2.8315 (1) Å] in space group Cmmm , in agreement with recent studies. The material is heavily twinned on the (110) planes with an average distance between twin planes of 24 Å.