Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Enhancing the Magnetic–Luminescent Properties of Fe3O4@Y2O3:Eu3+ Core–Shell Bifunctional Particles Using Li+ Doping

Hong Zhang A , Le Wang A C , Tuo Wu A , Rubiao Chen A , Dong Luo A and Yanghui Li A B
+ Author Affiliations
- Author Affiliations

A College of Optics and Electronic Technology, China Jiliang University, Hangzhou 310018, China.

B State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China.

C Corresponding author. Email: calla@cjlu.edu.cn

Australian Journal of Chemistry 70(8) 896-901 https://doi.org/10.1071/CH17038
Submitted: 17 January 2017  Accepted: 13 March 2017   Published: 13 April 2017

Abstract

Magnetic–luminescent nanoparticles are now attracting great attention in biochemistry and biomedicine for their promising bifunctional characteristics. In this work, we propose a strategy of Li+ doping to enhance both the luminescent and magnetic properties of Fe3O4@Y2O3:Eu3+ core–shell particles. A comprehensive investigation of phase assembly, microscopic morphology, luminescence, and magnetic characteristics of the bifunctional particles was carried out. The core–shell structured particles have a spherical morphology and the agglomerated particle size is ~1 μm in diameter. Under 254 nm excitation, the co-doped sample (5 mol-% Li+) with a dominant emission peak at 612 nm, exhibits luminescence 2.35 times more intense than the undoped sample (0 mol-% Li+). Li+ doping also leads to an improved saturation magnetisation, which was 2.41 times greater than the undoped sample.


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