Robust Ferromagnetism of Chromium Nanoparticles Formed in Superfluid Helium.
basic_science · Level V
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- Record sourced from PubMed, PMID 27787938.
- Also identified by DOI 10.1002/adma.201604277.
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Abstract
Chromium nanoparticles are formed using superfluid helium droplets as the nanoreactors, which are strongly ferromagnetic. The transition from antiferromagentism to ferromagnetism is attributed to atomic-scale disorder in chromium nanoparticles, leading to abundant unbalanced surface spins. Theoretical modeling confirms a frustrated aggregation process in superfluid helium due to the antiferromagnetic nature of chromium.