Magneto-plasmonic properties of hybrid nanostructures prepared by laser ablation in different solutions

Authors

• R. A. Ejbarah ¹
• Ahmed K. Kodeary * ²
• Talib Abbas ³

1. Department of Petroleum & Gas Engineering, College of Engineering, University of Thi-Qar, Iraq.
2. Department of Laser Physics, College of Science for Woman, University of Babylon, Babylon, Iraq
3. Physics Department, College of Education for Pure Sciences, University of Babylon, Babylon, Iraq.

Abstract

The present experimental study aims to synthesize and evaluate the magneto-plasmonic properties of metallic nanoparticles to introduce a hybrid of core-shell nanoparticle that can be used in biomedical and optical applications. For these core-shell nanoparticles, gold (Au) was used as the plasmonic material and iron (Fe) as the partner in the magnetic parts. The core-shell nanoparticles were prepared by pulsed laser ablation in liquid media using a Nd:YAG pulsed laser in deionized water, as well as an aqueous solution of PVP, and for comparison an aqueous solution of PVA. Furthermore, the plasmonic and magnetic properties of the experimentally prepared core-shell nanoparticles were studied by optical spectroscopy and the vibrating sample magnetometer method within a variable magnetic field of up to 1 T. The results revealed tunable and adjustable optical linear behavior and obvious plasmonic properties by tracking the refractive index under different physical media. The results also showed that Superparamagnetic properties of core/shell nanoparticles were achieved by changing the surrounding medium. Accordingly, the results could open up new insight into the magneto-plasmonic region for beneficial biomedical applications.

Keywords

• Magneto-plasmonic properties
• Core shell nanoparticles
• Laser ablation in Liquids