Etching Figures in Neodymium Gallate and Yttrium Aluminate Crystals |
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Authors: | DI Savytskii AO Matkovskii IM Solskii F Wallrafen A Suchocki LO Vasylechko SB Ubizskii |
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Abstract: | The dislocations existing in single crystals of neodymium gallate and yttrium aluminate grown by the Czochralski technique have been studied by means of etch pits. The data concerning their solubility in cases of different directions of a face orientation, various treatment temperatures and several enchant types are reported. The investigation of etch pits in the twinned YAlO3 and NdGaO3 crystals showed that twins are formed during a growth process. In the 110]‐pulled NdGaO3 crystals the discrepancy between the twin and matrix parts of a crystal is accommodated by the dislocation congestion and the dislocation low‐angle boundaries whereas in 010]‐pulled YAlO3 crystals the microcracks perform this function. |
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Keywords: | twin dislocation YAlO3 NdGaO3 perovskite czochralski technique |
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