Open AccessA Simple Analytical Model for Magnetization and Coercivity of Hard/Soft Nanocomposite Magnets
Author(s) -
Jihoon Park,
YangKi Hong,
Woncheol Lee,
SeongGon Kim,
Chuang-bing Rong,
Narayan Poudyal,
J. Ping Liu,
Chul-Jin Choi
Publication year - 2017
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/s41598-017-04632-6
Subject(s) - coercivity , volume fraction , nanocomposite , magnet , materials science , magnetization , composite number , phase (matter) , simple (philosophy) , measure (data warehouse) , mass fraction , characterization (materials science) , condensed matter physics , composite material , nanotechnology , physics , computer science , magnetic field , philosophy , epistemology , quantum mechanics , database
We present a simple analytical model to estimate the magnetization ( σ s ) and intrinsic coercivity ( H ci ) of a hard/soft nanocomposite magnet using the mass fraction. Previously proposed models are based on the volume fraction of the hard phase of the composite. However, it is difficult to measure the volume of the hard or soft phase material of a composite. We synthesized Sm 2 Co 7 /Fe-Co, MnAl/Fe-Co, MnBi/Fe-Co, and BaFe 12 O 19 /Fe-Co composites for characterization of their σ s and H ci . The experimental results are in good agreement with the present model. Therefore, this analytical model can be extended to predict the maximum energy product ( BH ) max of hard/soft composite.