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Proceedings Paper

Toward solution processed magnetic nanoparticles for non-volatile memory applications (Conference Presentation)
Author(s): Hamed Sharifi Dehsari; Anielen Halda Ribeiro; Kamal Asadi

Paper Abstract

Iron oxide nanoparticles (IONPs) are among the most promising candidates for nano-scale magnetic memory applications due to their excellent magnetic properties. The information can be stored depending on the magnetization of the particles. The general drawback of IONPs however is the lack of ferromagnetism in IONPs at room temperature. To overcome this issue, doping of IONPs with cobalt is suggested. In this contribution we present a systematic study of Co doped IONPs using heat-up synthesis methods (thermal decomposition), wherein different synthesis parameters are surveyed and their effect on the particle size, stoichiometry of cobalt within the spinel ferrite nano crystals (CoxFe3-xO4) and magnetic properties are investigated. The synthesis was optimized to obtain sub-20 nm highly crystalline and monodisperse ferromagnetic nanoparticles with optimum magnetization and coercivity values. The particles were further modified by grafting polymerization from the surface of nanoparticles. Polymeric shells of different molecular weight are obtained, which allowed well dispersion of the ferromagnetic nanoparticles in common organic solvents. Nanoparticles can be solution processed to form a ferromagnetic thin-film. Solution processable magnetic films can open a new avenue in the low-cost non-volatile memory application.

Paper Details

Date Published: 19 September 2017
Proc. SPIE 10366, Hybrid Memory Devices and Printed Circuits 2017, 103660J (19 September 2017); doi: 10.1117/12.2274189
Show Author Affiliations
Hamed Sharifi Dehsari, Max-Planck-Institut für Polymerforschung (Germany)
Anielen Halda Ribeiro, Max-Planck-Institut für Polymerforschung (Germany)
Kamal Asadi, Max-Planck-Institut für Polymerforschung (Germany)

Published in SPIE Proceedings Vol. 10366:
Hybrid Memory Devices and Printed Circuits 2017
Emil J. W. List-Kratochvil, Editor(s)

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