کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10653449 | 1002879 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic properties of R2Fe17âxGax (R=Y and Gd) compounds
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Magnetic properties of R2Fe17âxGax (R=Y and Gd) compounds Magnetic properties of R2Fe17âxGax (R=Y and Gd) compounds](/preview/png/10653449.png)
چکیده انگلیسی
The magnetic properties of Y2Fe17âxGax for 3â¤xâ¤7 and Gd2Fe17âxGax for 5â¤xâ¤7 have been investigated using 57Fe Mössbauer spectroscopy. These compounds have the rhombohedral Th2Zn17 structure. X-ray diffraction analysis of aligned powders shows that the easy direction of magnetization is parallel to the c-axis in Y2Fe10Ga7 and Gd2Fe10Ga7 and is perpendicular to the c-axis in Y2Fe14Ga3, Y2Fe12Ga5, Gd2Fe12Ga5 and Gd2Fe11Ga6. Mössbauer studies indicate that those samples are ordered ferromagnetically. The 57Fe hyperfine field decreases with increasing Ga content. This decrease results from the decreased magnetic exchange interactions resulting from Ga substitution. The average isomer shift, δ, for R2Fe17âxGax (R=Y and Gd) at room temperature is positive and the magnitude of δ increases with increasing Ga content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 135, Issue 7, August 2005, Pages 424-429
Journal: Solid State Communications - Volume 135, Issue 7, August 2005, Pages 424-429
نویسندگان
Fumio Maruyama, Hiroyuki Nagai,