کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1595914 | 1515700 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic and magneotransport properties of Nd0.75Na0.25MnO3 manganite
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We report the magnetic and magnetotransport properties of the polycrystalline manganite Nd0.75Na0.25MnO3. In zero field, the sample shows a ferromagnetic insulator behavior. Under applied fields higher than 30Â kOe, a field-induced insulator-metal, followed by a metal-insulator transition at a lower temperature occur; at the same time the colossal magnetoresistance (CMR) effect is also observed. At the temperature of 5Â K, the metamagnetic transition from charge ordering/antiferromagnetic (CO/AFM) to ferromagnetic (FM) state is observed. With increasing temperature, the metastable FM phase can transform back to the CO state, accompanied by a high field hysteresis. The CMR effect of the sample can be understood by a percolative regime and is related to the CO-FM transition under a large magnetic field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 147, Issues 5â6, August 2008, Pages 190-193
Journal: Solid State Communications - Volume 147, Issues 5â6, August 2008, Pages 190-193
نویسندگان
T. Tang, R.S. Huang, S.Y. Zhang,