Habit of Fe203 Grown from Na2B407,

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Abstract:

Single crystals of hematite Fe2O3 grown from Na2B4O7 occur as plates, rods, hoppers, and equidimensional solid crystals. The habit was found to correlate with the growth rate and crystal defects. Plates and rods occurred for the highest growth rates used with the plate size controlled by rapid growth perpendicular to the 0001. The rods are the result of twinning on the 0,1,01,2. The hoppers and solid crystals grow in slow-cooled melts and are typical of crystals grown from high-viscosity melts. Author

Author(s):
Chase, Armand B. ; Morse, Frank L., Jr
Author Organization(s):
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
Pagination:
0019

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-0073(9230-10)-4, SAMSO-TR-72-308
Contract/Grant Number(s):
F04701-72-C-0073
Monitor Series:
TR-72-308
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*CRYSTAL GROWTH, IRON COMPOUNDS, OXIDES, SINGLE CRYSTALS, SODIUM COMPOUNDS, BORATES
Field(s)/Group(s):
Crystallography
Keyword(s):
*HEMATITE
Report Date:
1973 Jan 30