Metallic cobalt nanoparticles for heating applications |
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Authors: | Matthias Zeisberger Silvio Dutz Robert Müller Rudolf Hergt Nina Matoussevitch Helmut Bönnemann |
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Institution: | 1. Institut für Physikalische Hochtechnologie, A.-Einstein-Str. 9, D-07745 Jena, Germany;2. Forschungszentrum Karlsruhe, ITC-CPV, Post Box 3640, D-76021 Karlsruhe, Germany |
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Abstract: | We investigated the properties of metallic cobalt particles which were prepared by metal organic synthesis. By X-ray diffraction we identified the FCC Co phase and obtained a particle size of 6 nm. VSM measurements revealed a specific magnetization of 77.5 Am2/kg which is 46% of the bulk value. From the analysis of the magnetization curve the parameters of the particle size distribution were estimated. In order to assess the suitability of the material for heating applications AC susceptometry as well as calorimetrical measurements of the specific loss power at 400 kHz and 13–25 kA/m were performed. We obtained values from 500 to 1300 W/g. |
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Keywords: | Co-nanoparticle Specific heating power Particle size distribution AC susceptometry Hyperthermia |
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