Thermal stability of geometrically confined domain wall structures

Munetaka Sasaki, Katsuyoshi Matsushita, Jun Sato, Hiroshi Imamura

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

We investigate thermal stability of magnetic wall structure which is confined geometrically in a nano-contact. We measure free-energy as a function of magnetizations which characterize magnetic wall structures. Thermal stability is estimated from the free-energy barrier ΔF beyond which the system translates to another state. The typical value of k-1 BΔF is a few thousand Kelvin when the height of nano-contacts is 8 nm. The optimum shape of the nano-contact as magnetoresistance devices is clarified by examining the shape dependence of the free-energy barrier.

Original languageEnglish
Article number042022
JournalJournal of Physics: Conference Series
Volume200
Issue numberSECTION 4
DOIs
Publication statusPublished - 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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