Erscheinungsdatum: 21.12.2016, Medium: Buch, Einband: Gebunden, Titel: Applications of Laser Ablation, Titelzusatz: Thin Film Deposition, Nanomaterial Synthesis and Surface Modification, Redaktion: Yang, Dongfang, Verlag: IntechOpen, Sprache: Englisch, Rubrik: Elektronik // Elektrotechnik, Nachrichtentechnik, Seiten: 428, Informationen: HC gerader Rücken kaschiert, Gewicht: 1128 gr, Verkäufer: averdo
Erscheinungsdatum: 04.07.2014, Medium: Taschenbuch, Einband: Kartoniert / Broschiert, Titel: Synthesis of monodisperse FePt nanoparticles by pulsed laser ablation, Autor: Rouenhoff, Marcel, Verlag: Südwestdeutscher Verlag für Hochschulschriften AG Co. KG, Sprache: Englisch, Rubrik: Naturwissenschaften // Technik allg., Seiten: 116, Informationen: Paperback, Gewicht: 189 gr, Verkäufer: averdo
Synthesis of monodisperse FePt nanoparticles by pulsed laser ablation ab 38.9 € als Taschenbuch: . Aus dem Bereich: Bücher, English, International, Gebundene Ausgaben,
Pulsed Laser Ablation in liquid based synthesis of Nanoparticles ab 78.99 € als Taschenbuch: Synthesis and Optical properties of metal oxide nanoparticles and gold-metal oxide nanocomposites. Aus dem Bereich: Bücher, Wissenschaft, Physik,
Synthesis of monodisperse FePt nanoparticles by pulsed laser ablation ab 38.9 EURO
After decades of development, laser ablation has become an important technique for a large number of applications such as thin film deposition, nanoparticle synthesis, micromachining, chemical analysis, etc. Experimental and theoretical studies have been conducted to understand the physical mechanisms of the laser ablation processes and their dependence on the laser wavelength, pulse duration, ambient gas and target material. The present work describes and investigates the relative importance of the physical mechanisms influencing the characteristics of aluminum laser-induced plasmas. The general scope of this research encompasses a thorough study of the interplay between the plasma plume dynamics and the ambient gas in which they expand. This is achieved by imaging and analyzing the temporal and spatial evolution the plume in terms of spectral intensity, electron density and excitation temperature within various environments, extending from vacuum to atmospheric pressure (760 Torr), in an inert gas like argon and heluim, as well as in a chemically active gas like nitrogen.
The continuous drive to further miniaturization is one of the basic research and development goals in industry producing data processing and storage devices, for reasons of economy, performance and energy minimisation. Modern magnetic hard drives have storage densities of hundreds of GBits / in² , but future storage devices are required to reach values of over 1 TBits/ in². Ideally, a single domain magnetic nanoparticle could represent a single data bit. A main issue for reaching this is the thermal stability of magnetisation if the superparamagnetic limit is reached. The most promising material is the bimetallic alloy FePt which offers large magnetic anisotropy due the presence of the ordered face centered tetragonal phase. In the frame of this objective a synthesis process by means of the physical approach of evaporation and recondensation in the gas phase was developed and optimized. Thereby ns-Pulsed Laser Ablation was applied on a FePt rod inside a vacuum-tight facility. The FePt nanoparticles were size selected by means of a Differential Mobility Analyzer and annealed in order to obtain desired spherical shape and magnetic properties.