Magnetization switching in nanoscale ferromagnetic grains: Simulations with heterogeneous nucleation

Journal Article · Mon Mar 31 23:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.364612· OSTI ID:656083

Kolesik, M ^[1]; Richards, H L ^[2]; Novotny, M A ^[1]; Rikvold, P A ^[3]; Lindgard, P ^[4]

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1. Supercomputer Computations Research Institute, Florida State University, Tallahassee, Florida 32306-4052 (United States)
2. Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113 (Japan)
3. Department of Physics, Center for Materials Research and Technology, and Supercomputer Computations Research Institute, Florida State University, Tallahassee, Florida 32306-3016 (United States)
4. Department of Solid State Physics, Riso/ National Laboratory, DK-4000 Roskilde (Denmark)

We present results obtained with various types of heterogeneous nucleation in a kinetic Ising model of magnetization switching in single-domain ferromagnetic nanoparticles. We investigate the effect of the presence of the system boundary and make comparison with simulations on periodic lattices. We also study systems with bulk disorder and compare how two different types of disorder influence the switching behavior. {copyright} {ital 1997 American Institute of Physics.}

• Research Organization: Florida State University
• DOE Contract Number: FG02-85ER25000
• OSTI ID: 656083
• Report Number(s): CONF-961141--
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 8 Vol. 81; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
BOUNDARY CONDITIONS
COMPUTERIZED SIMULATION
DOMAIN STRUCTURE
FERROMAGNETIC MATERIALS
FERROMAGNETISM
ISING MODEL
MAGNETIZATION
NUCLEATION
PARTICLES