Thermal oxidation of indium thin films on magnesium oxide (MgO)(001) substrates

Authors

FCB Awitan ⋅ PH National Institute of Physics, University of the Philippines Diliman
FIN de Vera ⋅ PH National Institute of Physics, University of the Philippines Diliman
MAC Tumanguil ⋅ PH National Institute of Physics, University of the Philippines Diliman
RA Lopez ⋅ PH National Institute of Physics, University of the Philippines Diliman
JIL Bugante ⋅ PH National Institute of Physics, University of the Philippines Diliman
Jeffrey C. de Vero ⋅ PH National Institute of Physics, University of the Philippines Diliman
JD Azares ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando S. Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel A. Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Roland V. Sarmago ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

Thermal oxidations of indium thin films on MgO (001) substrates were done at different temperatures and oxidation environments. XRD pattern obtained from the samples showed the presence of two crystalline forms of In₂O₃, a cubic-In₂O₃ (c-In₂O₃) and a corundumtype In₂O₃ (rh-In₂O₃). This is attributed to incomplete oxidation of indium films together with the strain caused by the large lattice mismatch calculated to be 58.36% between the cubic single crystal MgO substrate and the oxidized indium thin films. The relative intensity of the peaks decreases with increasing oxidation temperature suggesting the depletion of the films have taken place during the process via evaporation. The formation of indium oxide films is favored at 450°C in an oxygen ambient environment as shown by the XRD pattern.

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Issue

2010: Proceedings of the 28th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2010-PA-25

Section

Poster Session PA

Published

2010-10-25

How to Cite

[1]

F Awitan, F de Vera, M Tumanguil, R Lopez, J Bugante, JC de Vero, J Azares, AS Somintac, AA Salvador, and RV Sarmago, Thermal oxidation of indium thin films on magnesium oxide (MgO)(001) substrates, Proceedings of the Samahang Pisika ng Pilipinas 28, SPP-2010-PA-25 (2010). URL: https://proceedings.spp-online.org/article/view/SPP-2010-PA-25.