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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Magnetic and magneotransport properties of Nd0.75Na0.25MnO3 manganite
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 30 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 5 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 5–6, August 2008, Pages 190-193
نویسندگان
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