کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1627850 | 1516461 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ferromagnetism of (ScCa)Co2 Laves phase compound synthesized under high pressure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The appearance of ferromagnetism in (Sc0.85Ca0.15)Co2 Laves phase synthesized under high pressure of 6 GPa was confirmed. A magnetically homogeneous state was achieved by applying pressure of 6 GPa in 1373 K for 48 h. This is the first study that confirmed a stable ferromagnetic state in exchange-enhanced Pauli paramagnet ScCo2-based compound system. The quantities of pressure P and magnetization M dependence of the Curie temperature TC, dln TC/dP and (dln TC/dP)/(dln M/dP) = dln TC/dln M for (Sc0.85Ca0.15)Co2 are smaller than those for Lu(Co1 â xAlx)2 compounds, and accordingly the magnetic moment of (Sc0.85Ca0.15)Co2 is stiffer against pressure. The ratio of the spin wave stiffness constant Ds to TC, Ds/TC, in (Sc0.85Ca0.15)Co2 is smaller than that of Lu(Co1 â xAlx)2, implying that the spin wave in (Sc0.85Ca0.15)Co2 spread over wider wavevector space.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volumes 408â412, 9 February 2006, Pages 147-150
Journal: Journal of Alloys and Compounds - Volumes 408â412, 9 February 2006, Pages 147-150
نویسندگان
M. Ohta, M. Okada, H. Kakuta, A. Fujita, K. Fukamichi, A. Kamegawa, H. Takamura, M. Okada,