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Growth of Bi–Sb Gradient Crystals for X‐ray Monochromators by means of the Gradient Projection Method
Author(s) -
Penzel St.,
Kleessen H.,
Neumann W.
Publication year - 1997
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170320816
Subject(s) - dissolution , x ray , projection (relational algebra) , temperature gradient , lattice (music) , crystallography , materials science , chemistry , optics , mineralogy , analytical chemistry (journal) , physics , mathematics , chromatography , algorithm , quantum mechanics , acoustics
Crystals with a well defined slope of composition have been grown by the Gradient Projection Method (GPM). In the system Bi–Sb gradient crystals with a lattice parameter gradient of Δ a /Δa/dz = 0.835%/cm and Δc/ c /dz = 0.79%/cm have been obtained. The concentration profiles of the grown crystals with large single crystalline parts exhibit a linear distribution. The adjustment of the dissolving rate allows to control the growth velocity and thus the quality of the grown crystals is increased.