Effect of P and Zr on the microstructure and magnetic properties of nanocomposite Pr2Fe14B/α-Fe ribbons

•P-addition reduces grain size of nanocomposite PrFeB, especially that of hard phase.•Further Zr-addition reduces grain size of PrFeB ribbons, especially that of soft phase.•Coercivity value of 964 kA.m−1 was achieved in P and Zr added PrFeB as-spun ribbons. We have investigated the effect of P and...

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2021-01, Vol.517, p.167345, Article 167345
Main Authors: Alam, Mehran Khan, Han, Guangbing, Kang, Shishou
Format: Article
Language:English
Subjects:
Alloying additive
Coercivity
Domain walls
Grain size
Iron
Magnetic properties
Magnetism
Magnetization curves
Melt-spinning technique
Microstructure
Nanocomposite magnets
Nanocomposites
Nucleation
P and Zr addition
Pr-Fe-B
Zirconium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•P-addition reduces grain size of nanocomposite PrFeB, especially that of hard phase.•Further Zr-addition reduces grain size of PrFeB ribbons, especially that of soft phase.•Coercivity value of 964 kA.m−1 was achieved in P and Zr added PrFeB as-spun ribbons. We have investigated the effect of P and Zr on the magnetic properties and microstructure of the as-spun ribbon Pr2Fe14B/α-Fe achieved at a wheel speed of 30 m/s. X-ray diffraction and TEM results reveal that P-addition can decrease the grain size of 2:14:1 hard phase whereas further Zr-addition decreases the soft α-Fe phase. The combination of doping P and Zr reduces overall grain size and refines the microstructure considerably, and results in enhanced coercivity significantly. The strong exchange coupling interaction in our ribbons were confirmed by Henkel plots, which leads to higher coercivity of 964 kA/m. The initial magnetization curves reveal the coercivity in P-added alloy is controlled by the nucleation of reversal domain and that in further Zr-added alloy is the domain wall pinning.
ISSN:0304-8853
1873-4766
DOI:10.1016/j.jmmm.2020.167345