کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10710580 | 1024698 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface and frustration evidence in Co-Ni-B nanoparticles by FMR measurements
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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: Surface and frustration evidence in Co-Ni-B nanoparticles by FMR measurements Surface and frustration evidence in Co-Ni-B nanoparticles by FMR measurements](/preview/png/10710580.png)
چکیده انگلیسی
We present ferromagnetic resonance (FMR) measurements on â¼3 nm amorphous magnetic nanoparticles of Co-Ni-B as a function of temperature (T). The particles were studied in powder form and dispersed in a polymer matrix to study the interparticle interaction effect. In both samples the FMR responses are similar down to Tâ¼10 K, where the powder sample shows an intensity increase not followed by the dispersed sample. We argue that the general characteristics are compatible with previous magnetization measurements and Monte Carlo simulations indicating large surface contributions to the effective anisotropy. In this case the frustration of the single-particle behavior observed in the powder sample at very low T (T ⩽ 10 K) is due to interparticle interactions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 294, Issue 2, July 2005, Pages e87-e90
Journal: Journal of Magnetism and Magnetic Materials - Volume 294, Issue 2, July 2005, Pages e87-e90
نویسندگان
E. De Biasi, R.D. Zysler, C.A. Ramos, H. Romero,