The 203rd Special MMU seminar   


Magnetic and magnetotransport properties of 1-D magnetic nanochains

Prof. Young Keun KIM
Department of Materials Science and Engineering, Korea University, Seoul, Korea

Date: February 25th (Wed), 2015
Time: 16:00 - 17:00
Place: 8th floor medium seminar room (Room 811-812), Sengen

Abstract:

  An understanding of magnetic and magnetotransport characteristics of 1-D arrays consisting of magnetic nanoparticles (MNPs) is of scientific interest. Therefore, the preparation and measurement of those kinds of superstructures would allow us to investigate the electronic conduction in large arrays of nanoparticles. Magnetite (Fe3O4) nanoparticles with diameters of about 100 nm were synthesized by a hydrothermal polyol method. Synthesized MNPs were aligned on the substrate under magnetic field resulting in nanochains. On a chain, a pair of Pt finger electrode was formed by focused-ion-beam induced deposition. Electrical properties of the nanochain as a function of temperature under various magnetic field strengths were analyzed by a physical property measurement system. In the presentation, I-V behaviors, R-T responses, and magnetoresistive responses of the nanochain will be discussed.