Micro-SQUID technique for studying the temperature dependence of switching fields of single nanoparticles
classification
❄️ cond-mat.mes-hall
cond-mat.mtrl-sci
keywords
singletemperaturedependencefieldsmagnetisationmicro-squidnanoparticlesswitching
read the original 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.
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