Quantitative structure-property relationship study of ID-aligned soft magnetic nanocomposites for fast actuation

摘要

Soft magnetic composites, consisting of magnetic particles in elastomer matrices, are of interests as an alternative actuator to aerospace engineering applications, due to their flexibility, fast actuation, and light weight. Their magnetostriction performance is largely affected by particle organization within the composites, and methods to eliminate demagnetization to maximize such actuation performance is currently not well understood. In this work, relationships between the particle organization and the magnetic susceptibility are experimentally studied about soft magnetic composites with aligned maghemite nanoparticles, in a quantitative manner. The preliminary results indicate compatibility with the hypothesis where inner demagnetization can be decreased by particle alignment with less agglomeration.