کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819023 | 1026042 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The peak effect in single-phase B1 MoCy encapsulated in multiwall carbon nanocages
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
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![عکس صفحه اول مقاله: The peak effect in single-phase B1 MoCy encapsulated in multiwall carbon nanocages The peak effect in single-phase B1 MoCy encapsulated in multiwall carbon nanocages](/preview/png/1819023.png)
چکیده انگلیسی
Isothermal magnetization hysteretic loops in nanocrystalline single-phase B1 MoCy encapsulated in multiwall carbon nanocages are studied. The initial magnetization curves show the sharp peak near zero field Hpen and the broad peak at Hp (>Hpen). The peak field Hpen increases exponentially with temperature T; Hpen(T/Tc) = Hpen(0)exp[âT/To] with values of Hpen(0) = 20 kOe and T0 = 1.4 K. On the other hand, the peak field Hp shifts linearly with decreasing T. At low temperatures, the sharp peak and the broad peak merge into a single peak. All of the features of the hysteretic loops have been found in a less anisotropic high-Tc compound of Nd1.85Ce0.15Cu2O8+δ. The value of To is consistent with the model that two-dimensional point vortices are thermally activated near the lateral surface of a layered superconductor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 468, Issue 24, 15 December 2008, Pages 2399-2402
Journal: Physica C: Superconductivity and its Applications - Volume 468, Issue 24, 15 December 2008, Pages 2399-2402
نویسندگان
Yositaka Yosida,