Single crystal growth and characterization of Ba$_2$ScNbO$_6$ -- a novel substrate for BaSnO$_3$ films

Large single crystals of the double-perovskite Ba $_{2}$ ScNbO $_{6}$ were grown from the melt for the first time. With a lattice parameter at room temperature of 4.11672(1) \r{A}, this cubic double-perovskite has an excellent lattice match to BaSnO $_{3}$ , PbZr $_{0.9}$ Ti $_{0.1}$ O $_{3}$ , LaInO $_{3}$ , BiScO $_{3}$ , and other perovskites of contemporary interest. Differential thermal analysis showed that Ba $_{2}$ ScNbO $_{6}$ melts at 2165 $\pm$ 30{\deg}C in an inert atmosphere. Competitive grain growth was visualized by energy dispersive Laue mapping. X-ray diffraction rocking curve measurements revealed full width at half maximum values between 21 and 33 arcsec for 002 and 004 reflections. The crystals were sufficiently large to yield (100)-oriented single-crystal substrates with surface areas as large as 10 x 10 mm $^{2}$ .

Single crystal growth and characterization of Ba $_{2}$ ScNbO $_{6}$ -- a novel substrate for BaSnO $_{3}$ films

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Single crystal growth and characterization of Ba $_{2}$ ScNbO $_{6}$ -- a novel substrate for BaSnO $_{3}$ films

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Single crystal growth and characterization of Ba22​ScNbO66​ -- a novel substrate for BaSnO33​ films

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Single crystal growth and characterization of Ba22​ScNbO66​ -- a novel substrate for BaSnO33​ films

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Single crystal growth and characterization of Ba $_{2}$ ScNbO $_{6}$ -- a novel substrate for BaSnO $_{3}$ films

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Single crystal growth and characterization of Ba $_{2}$ ScNbO $_{6}$ -- a novel substrate for BaSnO $_{3}$ films

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