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Undoped and MgO-doped near-stoichiometric lithium tantalate (SLT) crystals were grown by the zone-leveling Czochralski (ZLCz) technique for the first time from Li-rich solutions (mixed with 1.2mol% MgO for MgO-doped SLT crystal) having Li-excess feed supplied from below in an iridium crucible. Inclusion-free crystals were obtained. The transmittance along the growth axis was found to be satisfactory...
ZnO-doped near-stoichiometric lithium niobate (SLN) crystals were grown by the zone-leveling Czochralski (ZLCz) technique. The crystal was pulled from a Li-rich (60mol% of Li 2 O) solution having an SLN solid supplied from below in a slender platinum crucible. The segregation coefficient of ZnO was found being about 0.58, and this could cause dopant segregation along the grown crystal. However,...
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