Magnetic Rare Earth Compounds
Final technical rept. 19 May 1970-19 Jun 1971
HEWLETT-PACKARD CO PALO ALTO CA
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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 YFeO3 and Eu2Er1Ga0.7Fe4.3O12. A very stable solvent, comprised of BaO-B2O3-BaF2 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 YFeO3 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 cms-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 Eu2Er1Ga0.7Fe4.3O12. 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.
- Electricity and Magnetism