High-Pressure Laser Floating Zone Furnace

Abstract

The floating zone technique is a well-established single crystal growth method in materials research, able to produce volumetrically large specimens with extremely high purities. However, traditional furnace designs have relied on heating from high-powered bulb sources in combination with parabolic mirrors, and hence are constrained to transparent growth chambers with large solid angles of optical access. This results in a stark limitation on achievable processing gas pressures, and in turn renders a range of compounds unsuitable for crystal growth by the floating zone technique, either due to excessive volatility or due to metastability. Here, we demonstrate a novel high-pressure laser-based floating zone system (HP-LFZ). The use of lasers for heating allows implementation of a high-strength metal growth chamber, permitting greatly enhanced processing pressures over conventional mirror-based designs, with the current design allowing for pressures up to 1000 bar. We demonstrate a series of example single crystal growths using this design in pressures up to 675 bar, a significant increase over processing pressures attainable in commercially available floating zone systems. The general utility of the HP-LFZ is also illustrated via growths of a range of complex oxides.

arXiv comment17 pages, 11 figures

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Cited by in corpus (10)

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• Magneto-Elastic Coupling to Coherent Acoustic Phonon Modes in Ferrimagnetic Insulator GdTiO${}_3$
• Advances in high-pressure laser floating zone growth: the Laser Optical Kristallmacher II
• Refined Spin Wave Model and Multi-magnon Bound States in $L{i}_{2}Cu{O}_2$
• The Future of the Correlated Electron Problem
• Anisotropic magnetic phase diagrams, tricriticality, and spin-reorientation in high-pressure grown SmCrO${}_3$ single crystals
• High-pressure floating zone crystal growth of Sr${}_2$IrO${}_4$
• Growth of hexagonal BN crystals by traveling-solvent floating zone