Magnetic Rare Earth Compounds
Abstract
A steady-state crystal growth system suitable for the growth of magnetic rare earth compounds has been designed, constructed, and successfully operated. A very stable solvent, consisting of BaO-B2O3-BaF2, has been developed. This solvent is nonvolatile and nonreactive, and is well suited to the solution growth of magnetic materials. Its unique qualities make it particularly advantageous for controlled epitaxial growth of mixed orthoferrites or garnets. The experimental solubility curve for XFeO3 indicates that 30 molar percent will dissolve at a typical crystal growth temperature of 1300C. Arrays of bubbles have been generated in YFeO3 grown in the BaO-B2O3-BaF2 solvent, and the coercivity and mobility of crystals grown from this solvent have been measured and found comparable to the best values for crystals grown in the PbO- based solvents. Lang topographic studies have revealed defects in YfeO3 which cannot be seen optically, and this technique is proving to be a very useful characterization tool.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1970
- Accession Number
- AD0717311
Entities
People
- R. A. Burmeister
- R. Hiskes
- T. L. Felmlee