Abstract
Single phase, single crystals of YB 6, GdB 6 and ThB 6, several mm in size, have been prepared by use of an AlGa flux growth technique. Crystals were grown in an A atmosphere at 1550°C using Al 2O 3 crucibles that were heated either resistively or inductively. Use of the multi-elemental flux for crystal growth of these peritectically forming borides, has permitted good phase control not easily obtainable by other growth methods. Stoichiometry of these compounds can be varied by controlling the composition of the charge boride in the flux mixture. Measurement of superconducting transition temperatures, electrical resistance ratio and lattice parameters indicate that nonstoichiometric (B rich) crystals result.
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