Relating atomic local structures and Curie temperature of NdFeB permanent magnets:an X-ray absorption spectroscopic study

被引：4

作者：

Mu-Nan Yang ^{[1
]}

Hang Wang ^{[1
]}

Yong-Feng Hu ^{[2
]}

Liu-Yi-Mei Yang ^{[2
]}

Aimee Maclennan ^{[2
]}

Bin Yang ^{[1
]}

机构：

[1] Institute of Engineering Research, Jiangxi University of Scienceand Technology

[2] Canadian Light Source, University of Saskatchewan

来源：

Rare Metals | 2018年 / 37卷 / 11期

关键词：

Permanent magnet; Synchrotron radiation; X-ray absorption fine structure; Crystal structure; Curie temperature;

D O I：

暂无

中图分类号：

TM273 [永磁材料、永久磁铁];

学科分类号：

0805 ; 080502 ; 080801 ;

摘要：

Relationship between atomic local structures and Curie temperature of NdFeB permanent magnets was investigated semi-quantitatively using synchrotron radiation technique. Fe K-edge X-ray absorption spectroscopy(XAS) was employed to study the local structure of Fe atoms for samples before and after doping Dy, Tb or Gd. It is found that the bond lengths and coordination numbers are changed. Thus, the exchange interaction between Fe atoms increases with Dy, Tb or Gd doping, resulting in the improvement of Curie temperature of NdFeB permanent magnets. The doping effect is proven by experimental measurement of the magnetic properties. Microstructural characterization using scanning electron microscopy(SEM) was also used to further analyze the effect of different rare earth elements doping on Curie temperature of NdFeB permanent magnets.

引用

页码：983 / 988

页数：6

共 17 条

[1]

High-temperature magnetic properties of anisotropic Mn Bi/Nd Fe B hybrid bonded magnets[J]. Dong-Tao Zhang,Peng-Fan Wang,Ming Yue,Wei-Qiang Liu,Jiu-Xing Zhang,Jennifer Anand Sundararajan,You Qiang.Rare Metals. 2016(06)

[2] 强磁场热处理对烧结NdFeB磁体磁性能和显微组织的影响 [J].

王舒扬 ;

李廷举 ;

金俊泽 .

稀有金属材料与工程, 2008, (05) :896-899

[3] 热处理对烧结NdFeB磁体微观结构和磁性能的影响 [J].

周圣银 ;

周廉 ;

陈绍楷 ;

罗建军 .

稀有金属材料与工程, 2006, (06) :1006-1008

[4]

Composition related magnetic properties and coercivity mechanism for melt spun[（La 0.5 Ce 0.5 ） 1? x RE x] 10 Fe 84 B 6 （RE=Nd or Dy） nanocomposite alloys[J] . M. Hussain,J. Liu,L.Z. Zhao,X.C. Zhong,G.Q. Zhang,Z.W. Liu.Journal of Magnetism and Magnetic Materials . 2016

[5]

Composition-dependent magnetic properties of melt-spun La or/and Ce substituted nanocomposite NdFeB alloys[J] . M. Hussain,L.Z. Zhao,C. Zhang,D.L. Jiao,X.C. Zhong,Z.W. Liu.Physica B: Physics of Condensed Matter . 2016

[6] Improvement of Coercivity and Curie Temperature of Sintered Nd-Fe-B Permanent Magnets by Addition of Cu and Ni [J].

Basoglu, M. ;

Yanmaz, E. .

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2014, 27 (10) :2295-2298

[7]

Magnetic and microstructural properties of （Nd,Pr）-（Tb,Dy,Gd）-（Fe,Co,Al,Cu）-B type magnets[J] . O. A. Arinicheva,A. S. Lileev,M. Reissner,A. A. Lukin,A. S. Starikova.Hyperfine Interactions . 2013 (1)

[8]

Structure of selenium incorporated in pyrite and mackinawite as determined by XAFS analyses[J] . A. Diener,T. Neumann,U. Kramar,D. Schild.Journal of Contaminant Hydrology . 2012

[9]

Improvement of Thermal Stability of Nd-Tb-Fe-Co-B Sintered Magnets by Additions of Pr, Ho, Al, and Cu[J] . A. A. Lukin,E. I. Il’yashenko,A. T. Skjeltorp,G. Helgesen,Arcady Zhukov.Physics Research International . 2012

[10]

Influence of gadolinium on microstructure and magnetic properties of sintered NdGdFeB magnets[J] . Wenlong YAN,Shihong YAN,Dunbo YU,Kuoshe LI,Hongwei LI,Yang LUO,Hongchuan YANG.Journal of Rare Earths . 2012 (2)

← 1 2 →