Coercivity of domain-wall motion in thin films of amorphous rare-earth-transition-metal alloys

Masud Mansuripur, Roscoe Giles, George Patterson

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Computer simulations of a two-dimensional lattice of magnetic dipoles are performed on the Connection Machine. The lattice is a discrete model for thin films of amorphous rare-earth-transition-metal alloys with application to erasable optical data-storage systems. Simulated dipoles follow the dynamic equation of Landau, Lifshitz, and Gilbert under the influence of an effective magnetic field arising from local anisotropy, near-neighbor exchange, classical dipole-dipole interactions, and externally applied fields. By introducing several types of defects and inhomogeneities in the lattice, we show that the motion of domain walls can be hampered in various ways and to varying degrees.

Original languageEnglish (US)
Pages (from-to)4844-4846
Number of pages3
JournalJournal of Applied Physics
Volume69
Issue number8
DOIs
StatePublished - 1991

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coercivity
domain wall
rare earth elements
transition metals
dipoles
Connection Machine
thin films
data storage
magnetic dipoles
inhomogeneity
computerized simulation
anisotropy
defects
magnetic fields
interactions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Coercivity of domain-wall motion in thin films of amorphous rare-earth-transition-metal alloys. / Mansuripur, Masud; Giles, Roscoe; Patterson, George.

In: Journal of Applied Physics, Vol. 69, No. 8, 1991, p. 4844-4846.

Research output: Contribution to journalArticle

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