کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9803537 | 1516469 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic properties of hydrogen-amorphized RCo2Hx (RÂ =Â Gd, Tb, Dy, Ho, Er, Tm and Y) alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetic properties of hydrogen-amorphized RCo2Hx (RÂ =Â Gd, Tb, Dy, Ho, Er, Tm and Y) alloys Magnetic properties of hydrogen-amorphized RCo2Hx (RÂ =Â Gd, Tb, Dy, Ho, Er, Tm and Y) alloys](/preview/png/9803537.png)
چکیده انگلیسی
High-field magnetization curves and temperature dependences of the magnetization have been measured for RCo2Hx alloys amorphized by hydrogen treatment (R = heavy rare earths and yttrium). It was found that am-RCo2Hx are ferrimagnets with a strong Co-Co and a relatively weak R-Co exchange interaction. The compensation point observed in the M(T) curves shifts systematically to lower temperatures with increasing atomic number of the R elements. Both magnetic moment and compensation temperature depend on the amorphization temperature, which indicates a metastable and heterogeneous structural state of the amorphous hydrides. For the compositions with anisotropic R ions (Tb, â¦, Tm) the calculated magnetic moment of the R subsystem appears to be considerably lower than the value gJJ μB for corresponding rare earth ions, probably due to a non-collinear magnetic structure of the R subsystem. From the pressure effect on the magnetization measured for am-HoCo2H3, the magnetoelastic coupling constant is estimated as Cdd = 0.5 Ã 10â3 (μB/Co)â2, the value being considerably lower than that for parent RCo2 compounds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 398, Issues 1â2, 2 August 2005, Pages 36-41
Journal: Journal of Alloys and Compounds - Volume 398, Issues 1â2, 2 August 2005, Pages 36-41
نویسندگان
N.V. Mushnikov, V.S. Gaviko, T. Goto,