scholarly journals Effects of rare earth content on microstructure and magnetic properties of (Nd,Dy)-(Fe,Al)-B alloys

2008 ◽  
Vol 57 (6) ◽  
pp. 3823
Author(s):  
Li Xiu-Mei ◽  
Liu Tao ◽  
Guo Zhao-Hui ◽  
Zhu Ming-Gang ◽  
Li Wei
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Rare Earth Content ◽  
Microstructure And Magnetic Properties

Effect of rare earth content on microstructure and magnetic properties of SmCo and NdFeB thin films

2002 ◽  
Vol 91 (10) ◽  
pp. 8180 ◽  
Author(s):  
V. Neu ◽  
U. Hannemann ◽  
S. Fähler ◽  
B. Holzapfel ◽  
L. Schultz
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Rare Earth ◽  
Rare Earth Content ◽  
Microstructure And Magnetic Properties

scholarly journals Effect of Dy Additions on Microstructure and Magnetic Properties of Fe-Nd-B Magnets

1987 ◽  
Vol 96 ◽  
Author(s):  
R. Ramesh ◽  
G. Thomas ◽  
B. M. Ma
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Anisotropy Field ◽  
Apparent Effect ◽  
Effective Anisotropy ◽  
Strong Deviation ◽  
Preferential Segregation ◽  
Intrinsic Coercivity ◽  
Rare Earth Content ◽  
Microstructure And Magnetic Properties

ABSTRACTThis paper addresses the effect of Dy addition upon the magnetic properties, microstructure and microcomposition of Fe-Nd-B magnets. It is shown that increasing additions of Dy causes the remanence, Br to decrease linearly. The intrinsic coercivity, iHc, increases sharply for small additions of Dy, but the increase is not proportional for higher Dy contents. The iHc increases almost linearly with the effective anisotropy field of the RE2Fe14B phase until the Dy content is about 10% of the total rare earth content. Above this concentration, there is a strong deviation from linearity. Various types of possible concentration profiles of the substituted rare earth are suggested. It is also argued that preferential segregation of Dy to the interfaces could be beneficial in increasing the nucleation field. Morphologically there is no apparent effect of Dy on the microstructure. However, in the 5 atomic % Dy sample, Dy rich oxides were observed. It is shown through Energy Dispersive Xray Spectroscopy (EDXS) line profiling that Dy partitions preferentially into the RE2Fe14B phase in all the cases. No segregation of Dy to the interphase interfaces has been detected.

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.

The effect of Tb4O7 powders addition on the magnetic properties for Nd–Fe–B sintered magnets with low rare earth content

2020 ◽  
Vol 280 ◽  
pp. 128555
Author(s):  
Song Fu ◽  
Mi Yan ◽  
Binhong Zhang ◽  
Zhonghua Wei ◽  
Yongsheng Liu
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Sintered Magnets ◽  
Rare Earth Content

Microstructure and Magnetic Properties of Metastable RFeO3 (R: Rare-earth element) Formed from Undercooled Melt

2012 ◽  
Vol 96 (3) ◽  
pp. 995-1002 ◽  
Author(s):  
Malahalli Vijaya Kumar ◽  
Kazuhiko Kuribayashi ◽  
Jianding Yu ◽  
Junpei.T. Okada ◽  
Takehiko Ishikawa
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Undercooled Melt ◽  
Microstructure And Magnetic Properties

Studies of microstructure and magnetic properties in sintered mixed rare earth (MRE) -Fe-B magnets (MRE = Nd+La+Dy)

2011 ◽  
Vol 109 (7) ◽  
pp. 07A704 ◽  
Author(s):  
W. Tang ◽  
Y. Q. Wu ◽  
K. W. Dennis ◽  
N. T. Oster ◽  
M. J. Kramer ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Microstructure And Magnetic Properties
Sign in / Sign up

Export Citation Format

Share Document