Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 471, Issue -, Pages 457-463Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2018.09.097
Keywords
Nanocomposite magnet; Magnetization reversal; First-order reversal curve; Magnetic properties
Funding
- National Natural Science Foundation of China [51471101, U1531120]
- Key R&D Program of Zhejiang Province of China [2017C01004]
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In the present work, the (Nd0.8Ce0.2)2Fe(12)Co(2-x)Ti(x)B (x = 0-0.6) permanent alloys are prepared by melt-spinning method. Ti addition has proved to result in relevant improvements in the microstructure and magnetic properties. The enhanced coercivity Hcj of 7.13 kOe and maximum energy product (BH)(max) of 16.24 MGOe with a slight decrease in Br only have been obtained with the Ti content at x = 0.4. Microstructural observations reveal that the significant improvements of magnetic properties originate from the hard 2:14:1 magnetic phase refinement by introducing Ti element. The magnetization reversal behavior and energy loss characteristic have also been thoroughly investigated. The first-order reversal curves (FORCs) suggest that the Ti-doped sample with a higher maximum rho of the major peak and the flat surface is responsible for the stronger inter-phase exchange coupling and better magnetic performance.
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