TY - JOUR
T1 - Flux growth of β-NaGaO2 single crystals
AU - Suzuki, Issei
AU - Kakinuma, Ayako
AU - Ueda, Masato
AU - Omata, Takahisa
N1 - Funding Information:
Funding: This work was supported in part by a Grant-in-Aid for Scientific Research (B) (Grant No. 26289239 ), Grant-in-Aid for Scientific Research (A) (Grant No. 17H01315 ) and Grant-in-Aid for JSPS Fellows (Grant No. 26763 ) from the Japan Society for the Promotion of Science . This work was partly performed under the Cooperative Research Program of the “Dynamic Alliance for Open Innovation Bridging Human, Environment, and Materials”. Appendix A
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/12/15
Y1 - 2018/12/15
N2 - The flux growth of ternary wurtzite β-NaGaO2 single crystals by slow cooling from 1300 °C using 20B2O3–80PbO as a flux was investigated. The β-NaGaO2 single crystals were successfully obtained from a starting solution of 0.075 mol of Na2CO3 and 0.0375 mol of Ga2O3 in 0.14 mol of 20B2O3–80PbO. Unlike the flux growth of β-LiGaO2 single crystals where the crystals exhibit preferential growth along the [0 0 1] direction, the obtained β-NaGaO2 crystals did not show preferential growth along any direction. The β-NaGaO2 single crystals were subjected to an ion exchange of the Na+ ions with Cu+ and Ag+ ions to respectively obtain β-CuGaO2 and β-AgGaO2, which have recently attracted attention as narrow-band-gap oxide semiconductors. However, the β-CuGaO2 was pulverized and the β-AgGaO2 exhibited many cracks caused by the large volume change created by the phase transformation induced during the ion exchange.
AB - The flux growth of ternary wurtzite β-NaGaO2 single crystals by slow cooling from 1300 °C using 20B2O3–80PbO as a flux was investigated. The β-NaGaO2 single crystals were successfully obtained from a starting solution of 0.075 mol of Na2CO3 and 0.0375 mol of Ga2O3 in 0.14 mol of 20B2O3–80PbO. Unlike the flux growth of β-LiGaO2 single crystals where the crystals exhibit preferential growth along the [0 0 1] direction, the obtained β-NaGaO2 crystals did not show preferential growth along any direction. The β-NaGaO2 single crystals were subjected to an ion exchange of the Na+ ions with Cu+ and Ag+ ions to respectively obtain β-CuGaO2 and β-AgGaO2, which have recently attracted attention as narrow-band-gap oxide semiconductors. However, the β-CuGaO2 was pulverized and the β-AgGaO2 exhibited many cracks caused by the large volume change created by the phase transformation induced during the ion exchange.
KW - A2. Growth from melt
KW - A2. Single crystal growth
KW - B1. Oxides
KW - B2. Semiconducting ternary compounds
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U2 - 10.1016/j.jcrysgro.2018.09.034
DO - 10.1016/j.jcrysgro.2018.09.034
M3 - Article
AN - SCOPUS:85054084462
SN - 0022-0248
VL - 504
SP - 26
EP - 30
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
ER -