کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9781554 | 1511632 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites Size distribution effect on the magnetization and magneto-resistance in ferromagnetic nanostructured manganites](/preview/png/9781554.png)
چکیده انگلیسی
We present experimental data of magnetization and magneto-resistance of nanostructured La2/3B1/3MnO3 with B=Ca, Sr, which present difference between the coercive field in the magnetization loop with their corresponding maximum value in the magneto-resistance. This difference is described by a model that include, size distribution of magnetic particles, randomly oriented anisotropy axis and electronic transfer between the particles, which is mediated by spin-polarized tunneling process. Also, the model predicts that the maximum magneto-resistance can be, in the magnetic disorder state, two times larger than the experimental value. The model results can be used to estimate the size dispersion of nanoparticles in similar systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Physics and Chemistry of Solids - Volume 66, Issue 10, October 2005, Pages 1687-1694
Journal: Journal of Physics and Chemistry of Solids - Volume 66, Issue 10, October 2005, Pages 1687-1694
نویسندگان
D. GarcÃa, B. Alascio, D.G. Lamas, D. Niebieskikwiat, A. Caneiro, R.D. Sánchez, E.D. Cabanillas,