Preparation and Properties of Rare-Earth Compounds
Semiannual technical rept. 4 Jun 1971-3 Jan 1972
BATTELLE MEMORIAL INST COLUMBUS OH COLUMBUS LABS
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Preparation, characterization, and physical properties of rare-earth compounds of technological potential are described. Work was in the areas of magneto ferroelectric materials and of narrow-band narrow-gap semiconductors. In the former area, the primary objective was to develop a simultaneously ferroelectric and ferromagnetic device element operating in a useful temperature range. Solid solutions of rare-earth manganites, chromites, and ferrites have been the main object of investigation. Narrow-band narrow-gap semiconductors undergoing purely electronic semiconductor-to-metal transitions are of considerable practical and fundamental interest. The transitions investigated were the pressure-induced ones in the Sm chalcogenides. Work is continuing on solid solutions of similar composition. Some of these materials display strong white cathodoluminescence.
- Inorganic Chemistry
- Solid State Physics