کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8152807 | 1524760 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetization reversal and exchange bias study in bulk Gd1âxYxCrO3 (xâ¯=â¯0.0-1.0)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Single phase samples of Gd1âxYxCrO3 (xâ¯=â¯0.0-1.0) were prepared by sol-gel method. Lattice parameters obtained from the Rietveld refinement are found to decrease from aâ¯=â¯5.3129â¯Ã
, bâ¯=â¯5.5210â¯Ã
, and câ¯=â¯7.6040â¯Ã
for xâ¯=â¯0 to aâ¯=â¯5.2428â¯Ã
, bâ¯=â¯5.5208â¯Ã
and câ¯=â¯7.5340â¯Ã
for xâ¯=â¯1.0. The temperature variation of magnetization measurements show that all samples exhibit antiferromagnetic transitions and the Neel temperature (TN) decreases from TNâ¯=â¯174â¯K for xâ¯=â¯0.0 to 142â¯K for xâ¯=â¯1.0. Interesting magnetization reversal behavior is observed as the temperature is lowered from TN under field cooled condition and the magnetic compensation temperature, Tcomp is found to decrease from 136â¯K for xâ¯=â¯0 to 42â¯K for xâ¯=â¯0.70. These samples exhibit tunable positive and negative exchange bias fields with a maximum negative value of â1.17â¯kOe for xâ¯=â¯0.50. The origin of magnetization reversal and exchange bias field is explained by considering the competition between the paramagnetic moment of Gd3+ ions under the influence of negative internal field and the weak ferromagnetic component of Cr3+ ions due to canted antiferromagnetic ordering.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 461, 1 September 2018, Pages 91-99
Journal: Journal of Magnetism and Magnetic Materials - Volume 461, 1 September 2018, Pages 91-99
نویسندگان
Bibhuti B. Dash, S. Ravi,