Magnetoelectric control of superparamagnetism.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 23398658.
- Also identified by DOI 10.1021/nl3034637.
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Abstract
Here we demonstrate electric-field induced magnetic anisotropy in a multiferroic composite containing nickel nanocrystals strain coupled to a piezoelectric substrate. This system can be switched between a superparamagnetic state and a single-domain ferromagnetic state at room temperature. The nanocrystals show a shift in the blocking temperature of 40 K upon electric poling. We believe this is the first example of a system where an electric field can be used to switch on and off a permanent magnetic moment.
Medical subject headings
- Magnetics