کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9834150 | 1524907 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Inhomogeneous magnetic state in manganites-experimental aspects
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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
The crystal and magnetic structure as well as elastic, magnetic, and electrotransport properties of La0.88MnOx (2.82⩽x⩽2.96) and Nd1âxCaxMnO3 (0⩽x⩽0.2) manganites have been investigated as a function of Mn4+ content by X-ray, neutron diffraction, Young's modulus, magnetization, and resistivity measurements. The gradual transition from an orbitally ordered state to an orbitally disordered one is observed with increasing temperature or Mn4+ content. The magnetic properties of the samples have been found to correlate with the type of orbital state. The dynamic orbital correlations favor ferromagnetic state, while A-type antiferromagnetic state is typical for the static Jahn-Teller distortions. The properties are discussed in the framework of the structurally driven phase separation model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volumes 290â291, Part 2, April 2005, Pages 878-882
Journal: Journal of Magnetism and Magnetic Materials - Volumes 290â291, Part 2, April 2005, Pages 878-882
نویسندگان
I.O. Troyanchuk, V.A. Khomchenko, H. Szymczak,