Environmental sensitivity of structural metals: liquid metal embrittlement. Annual technical progress report No. 2, 25 Jun 1970--31 May 1971. [YFeO/sub 2/ and Eu/sub 2/ErGa/sub 0/ /sub 7/Fe/sub 4/ /sub 9/O/sub 12/, BaO--B/sub 2/O/sub 3/--BaF/sub 2/ solvent]
A steady-state crystal growth system suitable for both homoepitaxial and heteroepitaxial growth of unixial magnetic rare earth compounds has been constructed and used for the growth of both YFeO/sub 3/ and Eu/sub 2/Er/sub 1/Ga/sub 0/ /sub 7/Fe/sub 4/ /sub 3/O/sub 12/. A very stable solvent, comprised of BaO--B/sub 2/O/sub 3/--BaF/sub 2/ has been developed. This solvent is nonvolatile and nonreactive, and is well suited to the solution growth of magnetic oxides. Arrays of bubbles have been generated in YFeO/sub 3/ and the coercivity and mobility of crystals grown from this solvent have been measured and found to be about 0.05 Oe and about 3500 cm/s-Oe, comparable to the values for crystals grown in the PbO-based solvents. Stable arrays of mobile bubbles have also been generated in heteroepitaxially grown Eu/sub 2/Er/sub 1/Ga/sub 0/ /sub 7/Fe/sub 4/ /sub 3/O/sub 12/. Emission spectrographic analysis indicates that barium incorporation in the crystals grown from the BaO-based solvent is less than lead incorporated in those grown from the PbO-based solvent. (auth)
- Research Organization:
- Hewlett-Packard Co., Palo Alto, CA (USA)
- DOE Contract Number:
- DAAH01-70-C-1106
- OSTI ID:
- 7216886
- Report Number(s):
- AD-885334
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
YTTRIUM OXIDES
CRYSTAL GROWTH
ERBIUM COMPOUNDS
EUROPIUM COMPOUNDS
FERRITE GARNETS
GALLIUM OXIDES
IRON OXIDES
BARIUM FLUORIDES
BARIUM OXIDES
BORON OXIDES
EPITAXY
MAGNETIC MATERIALS
SOLVENTS
COERCIVE FORCE
MOBILITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BORON COMPOUNDS
CHALCOGENIDES
FLUORIDES
FLUORINE COMPOUNDS
GALLIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IRON COMPOUNDS
MINERALS
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication