Abstract
Single crystals of PrBa 2Cu 3O 7-δ containing small amounts of Mg were successfully fabricated by the improved crystal pulling method (SRL-CP method) using MgO crucibles. The melt temperature was between 965°C and 970°C. No MgO inclusion was observed by electron probe micro analysis (EPMA). The lattice constants of the grown crystal are a=3.907(1) A ̊ , b=11.768(1) A ̊ , V=176.6(1) A ̊ 3 . The Mg contamination from MgO crucible was relatively small with a composition of Pr 1.00Ba 2.00Cu 2.94O 6.72Mg 0.06. analyzed by 4-circle single crystal diffractometer.
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