کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1803027 1024609 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
EMR study of magnetic inhomogeneities in crystalline bulk and nanometer-sized La0.7Ca0.3MnO3
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
EMR study of magnetic inhomogeneities in crystalline bulk and nanometer-sized La0.7Ca0.3MnO3
چکیده انگلیسی

Electron magnetic resonance (EMR) was studied on crystalline bulk and nanometer-sized samples of the same La0.7Ca0.3MnO3 manganite compound aiming to compare their magnetic homogeneities. The results obtained show that single-crystalline bulk sample is less homogeneous than the nanocrystalline one. Except for higher homogeneity, the nanometer-sized sample also demonstrates a weaker magnetic anisotropy. As a result, well-pronounced coexistence of different magnetic phases (coexistence of ferromagnetic and paramagnetic resonance signals) is observed in the bulk sample, while it is absent in the nanocrystalline one. It is suggested that such strong difference is directly connected to the difference in structural state of the samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 14, July 2008, Pages e8–e11
نویسندگان
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