Visible to the public High-Temperature Magnetic Properties of Anisotropic SmCo7/Fe(Co) Bulk Nanocomposite Magnets

TitleHigh-Temperature Magnetic Properties of Anisotropic SmCo7/Fe(Co) Bulk Nanocomposite Magnets
Publication TypeJournal Article
Year of Publication2018
AuthorsSong, W., Li, X., Lou, L., Hua, Y., Zhang, Q., Huang, G., Hou, F., Zhang, X.
JournalIEEE Transactions on Magnetics
KeywordsAmorphous magnetic materials, Anisotropy, boron alloys, bulk, cobalt alloys, coercive force, compositionality, conventional SmCo, corresponding isotropic nanocomposites, cyber physical systems, high-temperature magnetic properties, high-temperature magnets, high-temperature properties, Internet of Things, Iron, iron alloys, magnetic properties, Magnetic Remanence, Magnetomechanical effects, melt spinning, nanocomposite magnets, nanocomposites, nanofabrication, nanomagnetics, Permanent magnets, Perpendicular magnetic anisotropy, pubcrawl, remanence, Resiliency, samarium alloys, SmCo, SmCo7-FeCo, Soft magnetic materials
AbstractHigh-temperature magnetic properties of the anisotropic bulk SmCo7/Fe(Co) nanocomposite magnets prepared by multistep deformation have been investigated and compared with the corresponding isotropic nanocomposites. The anisotropic SmCo7/Fe(Co) nanocomposites with a Fe(Co) fraction of 28% exhibit much higher energy products than the corresponding isotropic nanocomposites at both room and high temperatures. These magnets show a small remanence (a = -0.022%/K) and a coercivity (v = -0.25%/K) temperature coefficient which can be comparable to those of the conventional SmCo5 and Sm2Co17 high-temperature magnets. The magnetic properties of these nanocomposites at high temperatures are sensitive to the weight fractions of the Fe(Co) phase. This paper demonstrates that the anisotropic bulk SmCo7/Fe(Co) nanocomposites have better high-temperature magnetic properties than the corresponding isotropic ones.
Citation Keysong_high-temperature_2018