Magnetoresistance of single-domain ferromagnetic particles

J. Aumentado*, V. Chandrasekhar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


The magnetoresistance on single-domain, submicron elliptical ferromagnetic Ni particles is measured using nonmagnetic probes in a four-probe geometry at liquid-helium temperatures. The magnetic resistance shows sharp jumps on the smallest particles which are associated with the switching of individual domains. The normalized magnetization hysteresis loops can be reconstructed using an anisotropic magnetoresistance model. The remanent magnetization in zero applied magnetic field is less than the saturation magnetization and this relaxation may be due to surface effects or crystal grain structure in the particles.

Original languageEnglish (US)
Pages (from-to)1898-1900
Number of pages3
JournalApplied Physics Letters
Issue number13
StatePublished - Mar 29 1999

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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