کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10709839 | 1024537 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrical- and magneto-resistance control for magnetite nanoparticle sinter by regulation of heat treatment temperature
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
⺠We investigated electrical- and magneto-resistance controls in magnetite (Fe3O4) nanoparticle sinter (MNPS) by the regulation of heat treatment (HT) temperature. ⺠By changing the HT temperature, the coupling state between adjacent magnetite nanoparticles and the crystallinity of MNPS were altered. ⺠Below â¼600 °C, ER and MR were dominated by grain-boundary conduction, while above â¼600 °C they were determined by inter-grain conduction. ⺠The application of a magnetic field to the grain-boundary region, which had relatively random localized spins, caused a large enhancement in MR.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 323, Issue 6, March 2011, Pages 686-690
Journal: Journal of Magnetism and Magnetic Materials - Volume 323, Issue 6, March 2011, Pages 686-690
نویسندگان
H. Kobori, T. Asahi, A. Yamasaki, A. Sugimura, T. Taniguchi, A. Ando, H. Kawanaka, Y. Naitoh, T. Shimizu,