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Synthesis of Magnetic Nanoparticles by Ultrashort Pulsed Laser Ablation of Iron in Different Liquids
Author(s) -
Kanitz Alexander,
Hoppius Jan S.,
del Mar Sanz María,
Maicas Marco,
Ostendorf Andreas,
Gurevich Evgeny L.
Publication year - 2017
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201601252
Subject(s) - nanoparticle , laser ablation , laser ablation synthesis in solution , materials science , analytical chemistry (journal) , magnetometer , pulsed laser deposition , laser , chemical engineering , nanotechnology , chemistry , laser power scaling , optics , organic chemistry , thin film , magnetic field , x ray laser , physics , engineering , quantum mechanics
Abstract Magnetic nanoparticles were generated by ultrashort pulsed laser ablation of an iron target in water, methanol, ethanol, acetone and toluene. The relationship between ablation rate, liquid properties and the physical and chemical properties of the nanoparticles was studied. Composition, morphology and magnetic properties were investigated by TEM, XPS and vibrating‐sample (VSM) and SQUID magnetometry. The properties of the generated nanoparticle ensembles reflected the influence of the liquid environment on the particle formation process. For example, the composition was strongly dependent on the carbon to oxygen ratio within the molecules of the liquid. In contrast to short pulsed laser ablation in liquids, the nanoparticles generated by ultrashort pulses had a higher level of polycrystallinity.