DocumentCode :
3560020
Title :
Effect of Gallium Addition on the Magnetic Properties of Nd 
Fe 
Al
Author :
Kaszuwara, W. ; Michalski, B. ; Leonowicz, M. ; Latuch, J.
Author_Institution :
Fac. of Mater. Sci. & Eng., Warsaw Univ. of Technol., Warsaw
Volume :
44
Issue :
11
fYear :
2008
Firstpage :
4250
Lastpage :
4253
Abstract :
In this study, the effect of gallium (Ga) for Al substitution in the Nd60Fe30Al(10-x)Gax (in at.%) system was analyzed. Cylindrical samples (rods) with a diameter of 1 mm were prepared by casting the material into a copper die. Substitution of gallium for aluminum leads to substantial growth of the coercivity up to 407 kA/m for x = 8. The remanence is constant up to x = 8. Magnetic properties for higher Ga concentrations of hard magnetic properties abruptly decrease. On the basis of the differential scanning calorimeter and X-ray diffraction data, it may be concluded that the Ga addition reduces the ability for amorphous structure formation; for x = 10 crystalline phases predominate.
Keywords :
X-ray diffraction; aluminium alloys; casting; coercive force; differential scanning calorimetry; gallium alloys; iron alloys; neodymium alloys; noncrystalline structure; remanence; Nd60Fe30Al(10-x)GaxJk; X-Ray diffraction; aluminium substitution; amorphous structure formation; casting; coercivity; crystalline phases predominate; differential scanning calorimeter; gallium addition effect; gallium concentrations; hard magnetic properties; magnetic properties; remanence; Magnetic materials; neodymium alloys;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2008.2001994
Filename :
4717352
Link To Document :
