TY - JOUR
T1 - Local structure investigations of Sn and Mn doped in β-Ga2O3 by X-ray absorption spectroscopy
AU - Arima-Osonoi, H.
AU - Yamazaki, K.
AU - Simura, R.
AU - Sugawara, T.
AU - Yubuta, Kunio
AU - Sugiyama, K.
AU - Yoshiasa, A.
N1 - Funding Information:
The XAFS measurements were carried out with the approval of the Photon Factory Program Advisory Committee (Proposal Nos. 2014G535 and 2019G087). This research was partially supported by JSPS KAKENHI Grant Numbers JP18H05456 and JP20H00189.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/9/15
Y1 - 2021/9/15
N2 - Sn-doped and Mn-doped β-Ga2O3 single crystals were grown by the floating zone method using SnO and MnCO3·nH2O as the dopant sources, respectively. We have succeeded in investigating the local structural features of Sn and Mn doped in β-Ga2O3 by X–ray absorption fine structure (XAFS) analysis. The XAFS analyses indicated the preference of Sn4+ at the octahedral sites in the β-Ga2O3 structure. On the other hand, the site preference for Mn is more complex, with most of the Mn present as Mn2+ substituting for Ga at the tetrahedral site. Further investigations using other spectroscopic techniques will be useful to clarify the effect and environmental structure of Mn.
AB - Sn-doped and Mn-doped β-Ga2O3 single crystals were grown by the floating zone method using SnO and MnCO3·nH2O as the dopant sources, respectively. We have succeeded in investigating the local structural features of Sn and Mn doped in β-Ga2O3 by X–ray absorption fine structure (XAFS) analysis. The XAFS analyses indicated the preference of Sn4+ at the octahedral sites in the β-Ga2O3 structure. On the other hand, the site preference for Mn is more complex, with most of the Mn present as Mn2+ substituting for Ga at the tetrahedral site. Further investigations using other spectroscopic techniques will be useful to clarify the effect and environmental structure of Mn.
KW - A1. XAFS, A1. Dopant, A1. Crystal structure
KW - A2. Floating zone technique
KW - B1. Gallium oxides
KW - B2. Semiconducting materials
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U2 - 10.1016/j.jcrysgro.2021.126223
DO - 10.1016/j.jcrysgro.2021.126223
M3 - Article
AN - SCOPUS:85109391591
VL - 570
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
M1 - 126223
ER -