Ion Beam Stabilization of FePt Nanoparticle Arrays for Magnetic Storage Media
- SLAC
The authors describe the use of ion beam induced crosslinking to harden the organic matrix material of self-assembled arrays of monodisperse (4 nm) FePt nanoparticles, providing diamondlike carbon barriers to inhibit agglomeration of the nanoparticles under heat treatment. Such stabilization is necessary for the particles to survive the > 500 C annealing required for growth of the fct L 1{sub 0} phase of FePt, whose magnetic anisotropy is necessary for application of such arrays for high density perpendicular recording. Selective area irradiation of continuous nanoparticle coatings, using ion beams patterned over a full disk by stencil mask or with ion projection optics, followed by dissolution of the unexposed coating, is proposed as a means of fabricating extended bit patterns consisting of isolated islands of FePt nanoparticles, with characteristic dimensions of tens of nanometers.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 813281
- Report Number(s):
- SLAC-PUB-10025
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structural and Magnetic model of self-assembled FePt nanoparticle arrays
Controlled Synthesis and Assembly of FePt Nanoparticles
Formation of FePt Nanoparticles Having High Coercivity
Technical Report
·
Thu May 13 00:00:00 EDT 2004
·
OSTI ID:826934
Controlled Synthesis and Assembly of FePt Nanoparticles
Technical Report
·
Fri Jun 20 00:00:00 EDT 2003
·
OSTI ID:813357
Formation of FePt Nanoparticles Having High Coercivity
Journal Article
·
Sat Dec 31 23:00:00 EST 2005
· Journal of the American Chemical Society
·
OSTI ID:931893