Rapidly Solidified Alloys for Permanent Magnets

1985 ◽  
Vol 58 ◽  
Author(s):  
G.C. Hadjipanayis
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Tetragonal Phase ◽  
Permanent Magnets ◽  
Domain Walls ◽  
Partial Substitution ◽  
Melt Spun ◽  
Fine Microstructure ◽  
Rapidly Solidified ◽  
Hard Magnetic Properties

ABSTRACTThe magnetic and structural properties of melt-spun Fe-R-B alloys are reviewed. The hard magnetic properties of these alloys are attributed to the presence of a highly anisotropic tetragonal phase Fe14R2B which in the case of ribbons occurs in very fine grains. The interachoot of domain walls with this fine microstructure leads to the observed high coercivities. The effects of partial substitution of iron, rare-earth and boron on the formation of Fe14R2B and on its magnetic properties are also discussed.

Enhanced Hard-magnetic Properties of Rare Earth-free L10-FeNi Phase in FeNiPC Alloys

2021 ◽  
Vol 26 (4) ◽  
pp. 394-400
Author(s):  
Jonghee Han ◽  
Jin-Yoo Suh ◽  
Hyunsol Son ◽  
Haein Choi-Yim
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Hard Magnetic Properties

Hard magnetic properties and coercivity mechanism of melt-spun Misch Metal-Fe-B alloy

2017 ◽  
Vol 437 ◽  
pp. 12-16 ◽  
Author(s):  
Ningtao Quan ◽  
Yang Luo ◽  
Wenlong Yan ◽  
Chao Yuan ◽  
Dunbo Yu ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Misch Metal ◽  
Melt Spun ◽  
Coercivity Mechanism ◽  
Hard Magnetic Properties

Hard magnetic properties of melt-spun nanocomposite Y16Fe78B6 ribbons

Rare Metals ◽  
2016 ◽  
Author(s):  
Liang Sun ◽  
Kuo-She Li ◽  
Hong-Wei Li ◽  
Dun-Bo Yu ◽  
Yang Luo ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Melt Spun ◽  
Hard Magnetic Properties

Microstructure and Magnetic Properties of RE2.28Fe13.58B1.14 Alloys

2016 ◽  
Vol 848 ◽  
pp. 709-714 ◽  
Author(s):  
Gang Fu ◽  
Jiang Wang ◽  
Mao Hua Rong ◽  
Guang Hui Rao ◽  
Huai Ying Zhou
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Rare Earth ◽  
Single Phase ◽  
Permanent Magnets ◽  
Industrial Applications ◽  
Arc Melting ◽  
Light Rare Earth Elements ◽  
Curie Temperatures ◽  
Microstructure And Magnetic Properties

The rare-earth (RE) permanent magnets based on Nd2Fe14B with excellent magnetic properties have been widely used in industrial applications. In this work, the crystal structure, microstructure and magnetic properties of Nd2.28Fe13.58B1.14, Ce2.28Fe13.58B1.14 and Pr2.28Fe13.58B1.14 alloys prepared by arc-melting were investigated. The results show that all alloys are single phase with tetragonal Nd2Fe14B-type (space group P42/mnm). The Curie temperatures (Tc) of RE2.28Fe13.58B1.14 (RE=Nd, Ce, Pr) alloys are 583 K, 423 K and 557 K, respectively. On the other hand, the coercivities of Nd2.28Fe13.58B1.14 and Pr2.28Fe13.58B1.14 alloys are about 1.05 T and 1.23 T, respectively, while that of Ce2.28Fe13.58B1.14 alloy is only about 0.25 T due to the poor squareness of hysteresis loop. Meanwhile, the saturation magnetizations of Nd2.28Fe13.58B1.14 and Pr2.28Fe13.58B1.14 alloys are about 135 emu/g and 113 emu/g, respectively, while that of Ce2.28Fe13.58B1.14 alloy is about 97 emu/g. It was indicated that the Curie temperatures and magnetic properties of RE2.28Fe13.58B1.14 alloys with the same crystal structure are dependent on light rare earth elements.

Effects of cerium substitution on magnetic properties of naturally layered TbMn6Sn6 compound

2016 ◽  
Vol 30 (11) ◽  
pp. 1650068 ◽  
Author(s):  
X. X. Chen ◽  
M. Zhao ◽  
G. Z. Liu ◽  
J. L. Yao ◽  
J. Gao
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Magnetocrystalline Anisotropy ◽  
Type Structure ◽  
Spin Orientation ◽  
Structure Space ◽  
Ce Substitution ◽  
Anisotropy Model ◽  
Hard Magnetic Properties

The Tb[Formula: see text]Ce[Formula: see text]Mn6Sn6 compounds with [Formula: see text] crystallize in the hexagonal HfFe6Ge6-type structure (space group [Formula: see text]). The cerium (Ce) substitution for Tb increases the magnetization while reduces the Curie and spin-orientation temperatures. The hard magnetic properties are enhanced by the Ce substitution, e.g., from a coercivity of [Formula: see text] kOe for TbMn6Sn6 to [Formula: see text] kOe for the Ce-substituted compounds with [Formula: see text] at 5 K. The role of Ce substitution in the magnetocrystalline anisotropy is discussed based on the single-ion anisotropy model. The substitution of Ce for critical rare-earth atoms provides an opportunity of improving hard magnetic properties of the rare-earth-based intermetallics.

Sign in / Sign up

Export Citation Format

Share Document