Regensburg 2010 – scientific programme
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KR: Fachverband Kristallographie
KR 10: Poster: Multiferroics (with MA, DF, KR, DS)
KR 10.65: Poster
Tuesday, March 23, 2010, 10:45–13:45, Poster A
Characterization of bioinspired synthesized magnetic nanoparticles — •Annalena Wolff1, Katrin Eckstädt1, Dieter Akemeier1, Inga Ennen1, Irina Dück1, Katrin Wollschläger2, Norbert Sewald2, and Andreas Hütten1 — 1Department of Physics, University of Bielefeld, Germany — 2Department of Chemistry, University of Bielefeld, Germany
Size distribution, morphology and magnetization of nanoparticles are important properties in many applications. In this study Cobalt Ferrite nanocrystals were synthesized using a biomineralization protein containing 25 amino acids and oxidative coprecipitation of Co2+ and Fe2+. An AGM was used for magnetization measurements. A FIB DualBeam System was used to examine the morphology and size distribution. Furthermore the morphology and size distribution of chemically produced CoAu nanoparticles was examined with the DualBeam System and the magnetization with an AGM. Previously GMR was succesfully measured on CoRuNanoparticles structures. Now GMR was measured of a setup consisting of two gold contacts which are connected through a structured monolayer of CoAu nanoparticles. GMR was measured at room temperature and at low temperatures. Two point measurements and four point geometry measurements on single particle are planned.