Micro-SQUID technique for studying the temperature dependence of switching fields of single nanoparticles - Archive ouverte HAL Access content directly
Journal Articles Journal of Magnetism and Magnetic Materials Year : 2002

Micro-SQUID technique for studying the temperature dependence of switching fields of single nanoparticles

Abstract

An improved micro-SQUID technique is presented allowing us to measure the temperature dependence of the magnetisation switching fields of single nanoparticles well above the critical superconducting temperature of the SQUID. Our first measurements on 3 nm cobalt nanoparticle embedded in a niobium matrix are compared to the Neel Brown model describing the magnetisation reversal by thermal activation over a single anisotropy barrier.

Dates and versions

hal-00022924 , version 1 (15-04-2006)

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Christophe Thirion, Wolfgang Wernsdorfer, M. Jamet, V. Dupuis, P. Melinon, et al.. Micro-SQUID technique for studying the temperature dependence of switching fields of single nanoparticles. Journal of Magnetism and Magnetic Materials, 2002, 242-45, pp.993-995. ⟨10.1016/S0304-8853(01)01130-1⟩. ⟨hal-00022924⟩
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