Influence of ablation time on the formation of manganese oxides synthesized by laser ablation of solids in liquids

Abstract Manganese oxide nanoparticles were synthesized, particularly the Mn 3 O 4 phase, using the laser ablation of solids in liquids technique (LASL). The experiments were carried out by ablating a manganese (Mn) target immersed in deionized water as the liquid medium, with a pulsed Nd:YAG laser with a wavelength of 1064 nm. The effect of ablation time on the formation of these oxides was studied as an important parameter, which determines the final composition of the obtained products. The formed nanoparticles were optically characterized by UV-Vis spectroscopy, while Raman spectroscopy and X-Ray diffraction helped the purpose of characterizing the crystalline oxide phases. TEM results showed that the nanoparticles are well crystalized and have an approximate diameter between 7 and 11 nm.