کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7921231 | 1511746 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature dependent magnetization and coercivity in morphotropic phase boundary involved ferromagnetic Tb1-xGdxFe2 system
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Temperature dependent magnetization and coercivity in morphotropic phase boundary involved ferromagnetic Tb1-xGdxFe2 system Temperature dependent magnetization and coercivity in morphotropic phase boundary involved ferromagnetic Tb1-xGdxFe2 system](/preview/png/7921231.png)
چکیده انگلیسی
Morphotropic phase boundary (MPB) refers to a transition region separating two ferromagnetic phases having different crystallographic symmetries in a ferromagnetic system. In the present study, magnetization and coercivity of the MPB involved ferromagnetic Tb1-xGdxFe2 system have been measured at selected temperatures between 5 and 300â¯K. The saturation magnetization MS of the Tb1-xGdxFe2 system varies with Gd concentration exhibiting minimum value at MPB composition xâ¯=â¯0.9â¯at all temperatures. Calculated magnetic moments of rare earth (RE) elements are lower than those of their corresponding free ions, which can be attributed to the crystal field effect (CFE). The magnetic anisotropy K decreases with increasing Gd concentration and anisotropy compensation has been observed at an MPB composition with xâ¯=â¯0.9. The coercivity HC of the Tb1-xGdxFe2 system was found to decrease with increasing the Gd concentration. Furthermore, HC exhibits a large value at low temperature and decays exponentially with increasing temperature. The observed temperature dependence of the HC can be explained by domain wall pinning, as a high K of rare earth elements (RE) at low temperatures causes a prominent pinning effect at 5â¯K. Our results shed light on magnetization, magnetic anisotropy and coercivity mechanisms in MPB involved ferromagnetic systems and provides an effective way to design novel functional materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 217, 15 September 2018, Pages 278-284
Journal: Materials Chemistry and Physics - Volume 217, 15 September 2018, Pages 278-284
نویسندگان
Adil Murtaza, Sen Yang, Muhammad Tahir Khan, Awais Ghani, Chao Zhou, Xiaoping Song,