Effect of Er3+ on structural and optical properties of microwave synthesized α-Fe2O3 nanoparticles

被引：7

作者：

Mathevula, L. E. ^{[1
]}

Mothudi, B. M. ^{[1
]}

Dhlamini, M. S. ^{[1
]}

机构：

[1] Univ South Africa, Dept Phys, POB 392, ZA-0003 Pretoria, South Africa

来源：

PHYSICA B-CONDENSED MATTER | 2020年 / 578卷

基金：

新加坡国家研究基金会;

关键词：

alpha-Fe2O3; Erbium; Nanoparticles; Band gap; MAGNETIC-PROPERTIES; PRECIPITATION; ROUTE; SIZE;

D O I：

10.1016/j.physb.2019.411698

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

alpha-Fe2O3 and alpha-Fe2O3:Er3+ nanoparticles at different concentrations have been successfully synthesized by microwave synthwave method. The XRD confirmed the hexagonal structure of alpha-Fe2O3 pure phase and no impurities were present confirming the substitution of Fe3+ with Er3+. The UV-Vis show the absorption band from the Er3+ assigned to I-4(11/2) and the band gap increases with increasing doping concentration. The Raman spectroscopy was used to further confirm the substitution of Fe3+ with Er3+ from the disappearing phonon band at 124 cm(-1). The photoluminescence show an increase in emission intensity from un-doped to 0.2 mol% doped Er3+ and a quenching phenomenon as the doping concentration is increased from 0.4 mol% to 0.6 mol%.

引用

页数：5

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