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Abstract:
GaN single crystals were grown in Na-Li-Ca flux system of which Li-Ca gradually replaces Na. X-ray powder diffraction analysis confirmed that the structure of GaN samples was wurtzite. As concentration of Li-Ca in flux increased, the shape of GaN crystals was changed from pyramidal, prism to platelets in sequence, and the color of them became transparent gradually. Among of them, the transparent prism crystals were grown first at 700 degrees C when the concentration of Li-Ca was 31.6 mol% and 48.9 mol% in flux solution, respectively. Raman spectra implied that these crystals were stress-free and the transparent crystal grown in the high concentration of Li-Ca solution had high structural quality or low impurity concentrations. (C) 2018 Author(s).
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AIP ADVANCES
ISSN: 2158-3226
Year: 2018
Issue: 5
Volume: 8
1 . 5 7 9
JCR@2018
1 . 5 4 8
JCR@2020
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:182
JCR Journal Grade:3
CAS Journal Grade:4
Cited Count:
WoS CC Cited Count: 4
SCOPUS Cited Count: 2
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0
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