Cubic domains in tetragonal ZnGeP2 single crystals

Yehoshua Shimony; O. Raz; M. P. Dariel; Giora Kimmel

doi:10.1117/12.281382

22 September 1997 Cubic domains in tetragonal ZnGeP₂ single crystals

Yehoshua Shimony, O. Raz, M. P. Dariel, Giora Kimmel

Proceedings Volume 3110, 10th Meeting on Optical Engineering in Israel; (1997) https://doi.org/10.1117/12.281382
Event: 10th Meeting on Optical Engineering in Israel, 1997, Jerusalem, Israel

Abstract

ZnGeP₂ crystallizes congruently through an (beta) _{> (alpha} phase transition. The high temperature (beta) -phase has a diamond-like cubic structure, with Zn and Ge ions randomly distributed on the metal sublattice. The (alpha) - ZnGeP₂ crystal has an ordered tetragonal structure, in which the Zn and Ge ions occupy different crystallographic sites. In the present study, good quality ZnGeP₂ crystals have been grown by means of the Horizontal Gradient Freezing technique. A small amount of coherently oriented domains of the cubic (beta) -ZnGeP₂ structure was identified, however, within the tetragonal ZnGeP₂ crystals, indicating an incomplete transition. The (beta) - ZnGeP₂ phase was partially retained by rapid quenching from the melt.

Citation Download Citation

Yehoshua Shimony, O. Raz, M. P. Dariel, and Giora Kimmel "Cubic domains in tetragonal ZnGeP₂ single crystals", Proc. SPIE 3110, 10th Meeting on Optical Engineering in Israel, (22 September 1997); https://doi.org/10.1117/12.281382

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