George C. Hadjipanayis
University of Delaware, Delaware, USA
George Hadjipanayis received the B.Sc. degree in Physics from the University of Athens (1969), and the M.Sc. and Ph.D. degrees in Physics from the University of Manitoba (Canada), in 1974 and 1979, respectively. Prof. Hadjipanayis was an assistant professor (1982-1985) and associate professor (1986-1988) in the Department of Physics at Kansas State University. In 1989 he joined the faculty of the University of Delaware as a full professor. In 1998, Prof. Hadjipanayis was a Humboldt Senior Fellow at the Max Planck institute (Stuttgart, Germany). In 1999, he assumed the position of Richard B. Murray Distinguished Professor of Physics and Astronomy and since 2003 has been the Chair of the Department of Physics and Astronomy at the University of Delaware. He has been recognized for seminal advances in scholarship with the Francis Alison Award (2005) and by elevation to Fellow of the American Physical Society (2001). Prof. Hadjipanayis’ areas of interest span hard magnetic materials with a focus on high performance permanent magnets and magnetic nanoparticles for storage media and biomedical applications. He has published more than 500 technical articles in peer-reviewed science and engineering journals, including book chapters, review articles, and invited technical feature articles on the topical areas of rare earth magnetism, nanotechnology, and permanent magnet materials, among others.
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Magnetic Nanoclusters and Nanoparticles
In this presentation, I will review the research achievements in our collaboration program with the University of Nebraska on the synthesis and characterization of novel magnetic nanoparticles and clusters. Our particles program spans a wide range of interests from basic studies to technological applications that include permanent magnets, high density recording media and biomedicine. One of our major objectives is the control of nanometer-length-scale and crystal structure to synthesize novel materials with high magnetization, large magnetocrystalline anisotropy and high ordering temperatures using non-equilibrium fabrication techniques.
In the past few years, our work has been focused on the following materials i) nanoparticles with properties drastically different from bulk made by cluster beam deposition (Co2Ge, MnSi, CoSi, Co3Si), ii) low temperature chemical synthesis of the high anisotropy L10 structures (FePt(Bi) and CoPt(Bi)) for magnetic recording media and most recently iii) Fe3O4-Au clusters for biomedical applications.