Recent Advances in Chemical Synthesis, Self-Assembly, and Applications of FePt Nanoparticles


  • The author thanks Drs. C. B. Murray, G. A. Held, H. F. Hamann, D. Weller, A. Moser, L. Folks, S. Raoux, E. E. Fullerton, T. Thomason, M. F. Toney, J. E. E. Baglin, P. M. Rice, B. D. Terris and his postdoctoral associates, Drs. H. Zeng, D. B. Robinson, H. Yu, and M. Chen at IBM research for their important contributions to FePt nanoparticle research. The author also thanks Prof. P. Liu of the University of Texas, Arlington, Prof. S. Wang of Stanford University, and Prof Z. L. Wang of the Georgia Institute of Technology for their collaboration in nanocomposite and biomagnetic projects. The research has been supported by DARPA/ARO, DARPA/ONR, ONR/MURI, Hitachi Maxell, Ltd., and Brown University.


This paper reviews recent advances in chemical synthesis, self-assembly, and potential applications of monodisperse binary FePt nanoparticles. After a brief introduction to nanomagnetism and conventional processes of fabricating FePt nanoparticles, the paper focuses on recent developments in solution-phase syntheses of monodisperse FePt nanoparticles and their self-assembly into nanoparticle superlattices. The paper further outlines the surface, structural, and magnetic properties of the FePt nanoparticles and gives examples of three potential applications in data storage, permanent magnetic nanocomposites, and biomedicine.