کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8153813 | 1524769 | 2018 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Metamagnetism, sign reversal and low temperature magnetocaloric effect in single-crystalline EuV2Al20
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Metamagnetism, sign reversal and low temperature magnetocaloric effect in single-crystalline EuV2Al20 Metamagnetism, sign reversal and low temperature magnetocaloric effect in single-crystalline EuV2Al20](/preview/png/8153813.png)
چکیده انگلیسی
The Frank-Kasper cage compound EuV2Al20 crystallizes in the cubic structure with Fd3â¾m space group and exhibits unusual magnetic and transport properties. The system undergoes an antiferromagnetic transition below 5.6â¯K wherein the Eu2+ moments are aligned anti-parallel along ã1â¯1â¯1ã direction and the system exhibits a weak metamagetic transition at the field of 1â¯T. Arrott plots (M2 vs H/M) show a “S” shaped variation in the low fields below TN and the plausible reason for the occurrence of negative slope is discussed. Isothermal magnetic entropy change is estimated from both magnetization and heat capacity measurements invoking the Maxwell's thermodynamic relations. Temperature variation of ÎSm showed a weak negative minimum and a sign reversal at the field value of 1â¯T due to field induced metamagnetic transition. Universal master curve is constructed by rescaling the ÎSm vs T curves in the context of analysing the nature of the magnetic transition.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 205-209
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 205-209
نویسندگان
K. Ramesh Kumar, Harikrishnan S. Nair, A. Bhattacharyya, A. Thamizhavel, André M. Strydom,