Sample
Name
Fayalite crystal, surface perpendicular to the a-axis
Date
1997-01-01
Provider
Astrophysical Institute and University Observatory Jena
Surface roughness
polished
Substrate material
epoxy resin (epofix)
Substrate comments
sample rear side embedded in resin (25mm diam.) for handling during polishing and measurement
Comments
Crystallographic orientation was realized by the Laue diffraction method
Temperature
300.0 $\pm$ 5.0 $K$
Temperature max
300.0 $K$
Type
ambient air
Fluid temperature
300.0 $K$
Fluid pressure
1000.0 $mbar$
Title
Synthesis and sample preparation of fayalite crystal

Produced sample

Sample
Fayalite crystal, surface perpendicular to the a-axis (this sample)
Processing steps
Step Chronology Date Type Process Changes
#1 before layer formation thermal crystal growth by the scull method (Physical Institute of the University of Frankfurt/Main, W. Assmus), inductive melting of polycrystalline fayalite with subsequent slow cooling in a sinter crust crucible under defined oxygen partial pressure transformation from polycrystalline to monocrystalline fayalite
#2 during layer formation layer formation selection of large crystals and crystallographic orientation by Laue method, surface perpendicular to a-axis
#3 after layer formation mechanical embedding the oriented fayalite crystal in epoxide resin and polishing