Caracterización morfológica de YTaO4 y YNbO4 dopadas con Eu3+ y Tb3+/Morphological characterization of YTaO4 and YNbO4 doped with Eu3+ and Tb3+

Authors

DOI:

https://doi.org/10.15665/rp.v14i2.748

Keywords:

Difracción de rayos X, Estructura Cristalina, Método de Rietveld, YTaO4 y YNbO4

Abstract

En este artículo se describe y se aplica el método de Rietveld para el refinamiento de dos estructuras cristalinas, tantalato de itrio (YTaO4) y tantalato de niobio (YNbO4). Estas estructuras se doparon con iones Eu3+ (Europio) y Tb3+ (Terbio) usando el método de reacción de estado sólido. Posteriormente fueron refinadas y comparadas con las estructuras sin dopaje. La morfología de los granos del YTaO4 y YNbO4 se estudiaron mediante microscopía electrónica de barrido y las estructuras fueron caracterizadas por difracción de rayos X (DRX). Se demuestra que la incorporación de los iones (Eu3+ y Tb3+) no cambia el tipo de estructura de estos fósforos, sino que aumenta el volumen de la celda unitaria de acuerdo a la ley de Vegard. Además, se simula la estructura cristalina de ambos fósforos mediante el software libre Balls & Sticks.

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Published

2016-06-16

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Vol. 14 No. 2 (2016): Julio - Diciembre

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Articles

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