Structural and optical characterization of crystals obtained via solid state reactions in the In2O3-TiO2-Al2O3 pseudoternary system

Medrano-Pesqueira CL, Brown F, Moncke D, de Ligny D, Tanori J, Del Castillo-Castro T (2019)

Publication Type: Journal article

Publication year: 2019

Journal

SN Applied Sciences Springer

Book Volume: 1

Journal Issue: 5

DOI: 10.1007/s42452-019-0504-6

Abstract

In this article, a synthesis of the compound In2O3-TiO2-Al2O3 (molar relation 3:4:1 and 5:8:1) at 1350 degrees C by solid-state reactions is described. The compounds were obtained after heat treatment at 1350 degrees C for two days. X-ray diffraction patterns indicate that the synthesized samples belong to the monoclinic crystal system with the space group C 2/m. An agglomeration of the crystals was observed by scanning electron microscopy for the heat-treated samples of either composition (S1HT and S2HT). Atomic quantitative analysis showed variations of the two compositions presented and TEM analyses confirmed that In3Ti2AlO10 crystals were formed. Partial nanocrystallization and irregularities can be observed in the micrographs. Both samples were polymorphic and presented chain discontinuities attributed to oxygen vacancies and/or distortions in the structure. UV-vis measurements were performed obtaining a band gap similar to 3.2 eV for all the samples analyzed. XPS analysis for S1HT and S2HT confirmed the expected oxidation of the compounds.

Authors with CRIS profile

Dominique de Ligny Professur für Werkstoffwissenschaften (Glas und Keramik)

Involved external institutions

Universidad de Sonora MX Mexico (MX) Alfred University US United States (USA) (US)

How to cite

APA:

Medrano-Pesqueira, C.L., Brown, F., Moncke, D., de Ligny, D., Tanori, J., & Del Castillo-Castro, T. (2019). Structural and optical characterization of crystals obtained via solid state reactions in the In2O3-TiO2-Al2O3 pseudoternary system. SN Applied Sciences, 1(5). https://dx.doi.org/10.1007/s42452-019-0504-6

MLA:

Medrano-Pesqueira, C. L., et al. "Structural and optical characterization of crystals obtained via solid state reactions in the In2O3-TiO2-Al2O3 pseudoternary system." SN Applied Sciences 1.5 (2019).

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