DocumentCode
1039164
Title
Structure and magnetic properties of Nd2(Fe1-xCox)14B1-y Cy alloys
Author
Sun, X.K. ; Kou, X.C. ; Chuang, Y.C. ; Grossinger, R. ; Kirchmayr, H.R.
Author_Institution
Inst. of Metal Res., Acad. Sinica, Shenyang, China
Volume
25
Issue
5
fYear
1989
fDate
9/1/1989 12:00:00 AM
Firstpage
3298
Lastpage
3299
Abstract
The reorientation temperature and magnetocrystalline anisotropy field (H a) of Nd2(Fe1-xCox)14B1-y Cy in the temperature range 200-450 K were determined by AC initial susceptibility measurements and the singular point detection technique, respectively. The temperature dependence of saturation magnetization was measured on finely powdered polycrystalline samples in an extraction magnetometer in fields up to 80 kOe. It was found that the Nd2(Fe1-xCox)14 C (X⩽0.4) series consisted of a mixture of two phases, Nd2(Fe,Co)17Cx and α-(Fe,Co), irrespective of heat treatment schedules. Partial substitution of C for boron led to a slight increase of H a, whereas substitution of Co for Fe (at low Co concentration) causes an increase of H a at low temperature. Although the concentration dependence of M s is reminiscent of the Slater-Pauling curve, no maximum was found at either 1.5 K or 300 K, as one would expect in Fe-Co and Nd2(Fe,Co)14B alloys
Keywords
Curie temperature; boron alloys; cobalt alloys; crystal atomic structure of alloys; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetisation; neodymium alloys; spin dynamics; 1.5 K; 200 to 450 K; AC initial susceptibility measurements; Nd2(Fe1-xCox)14B 1-yCy alloys; extraction magnetometer; finely powdered polycrystalline samples; magnetic properties; magnetocrystalline anisotropy field; reorientation temperature; saturation magnetization; singular point detection technique; temperature dependence; Anisotropic magnetoresistance; Iron; Magnetic anisotropy; Magnetic field measurement; Magnetic properties; Magnetic susceptibility; Neodymium; Perpendicular magnetic anisotropy; Saturation magnetization; Temperature distribution;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.42608
Filename
42608
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