Creation of shuttle-shaped nanoparticles using the method of magnetic polarization pulse laser ablation

摘要： The GaxCo0.6-xZnS0.4 (x = 0.1, 0.3, 0.5) nanoparticles with shuttle-shaped are fabricated via a Magnetic Polarization Pulse Laser Ablation (MPPLA) method. Meanwhile, the circular-shaped nanoparticles also are prepared for comparative analysis. The particle size, structure, and valence state are systematically investigated by X-ray di?raction (XRD), Raman spectra and X-ray photoelectron spectroscopy (XPS). The morphology of the nanoparticles characterized by TEM indicating the high e?cient of shuttle-shaped particles in preparation. A physical model of the e?ect of magnetic ?eld on the plasma plume is established to explain the formation of shuttle-shaped nanoparticles. Then, we present an explosion-absorption model to demonstrate the growth mechanism of nanoparticles. We further discuss the cluster phenomena and summarized three types of clusters in our nanoparticle suspensions. Fluorescence properties are re?ected by PL spectra, which demonstrates the best performance in concentration of GaxCo0.6-xZnS0.4 with shuttle-shaped. Therefore, all the results suggest that MPPLA is promising to prepare nanoparticles since it can adjust the shape, solve the cluster and modulate performance of NPs.