Nanocomposite exchange-spring magnet synthesized by gas phase method: From isotropic to anisotropic

Xiaoqi Liu, Shihai He, Jiao Ming Qiu, Jian Ping Wang

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

The fabrication of anisotropic nanocomposite exchange-spring magnets is demonstrated experimentally by using a gas-phase nanoparticle deposition technique. High resolution transmission electron microscopy images prove the experimental easy-axis definition of embedded hard magnetic nanoparticles in soft magnetic matrix. Exchange coupling between the hard and soft phases is confirmed by measuring recoil loops and δ M-H curve of the anisotropic FePt/ Fe0.8 Ni0.2 nanocomposite. The magnetic energy product for the anisotropic exchange-spring magnet is 224% higher than the isotropic case.

Original languageEnglish (US)
Article number222507
JournalApplied Physics Letters
Volume98
Issue number22
DOIs
StatePublished - May 30 2011

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