کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5490486 | 1524780 | 2017 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic and electrical transport properties of La0.7Sr0.3MnO3/LaFeO3 bilayer thin films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Bilayer films of La0.7Sr0.3MnO3/LaFeO3 (LSMO/LFO) were grown on (0Â 0Â 1) orientated LaAlO3 substrate for different thickness of LSMO layer by using RF magnetron sputtering. The analysis of X-ray diffraction patterns show the growth of both films along (0Â 0Â 1) direction and the out-of-plane lattice constant of LSMO film decreases with increase in film thickness. Both films are found to undergo out-of-plane tensile strain and the lattice strain is found to decrease with increase in film thickness. The temperature variation of magnetisation measurements show that all films exhibit ferromagnetic transition with transition temperature in the range of 290Â K for 30Â nm thick film to 332Â K for 200Â nm film. M-H loops recorded at 50Â K show a systematic increase in saturation magnetisation with increase in film thickness. The electron magnetic resonance spectra recorded at room temperature and at 77Â K show the presence of ferromagnetic resonance peak. The resonance peak becomes sharper and shifts towards lower field as the film thickness is increased. The resonance spectra recorded with magnetic field applied perpendicular to the plane of the film show an additional peak due to lattice strain and surface pinning of spins.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 441, 1 November 2017, Pages 531-536
Journal: Journal of Magnetism and Magnetic Materials - Volume 441, 1 November 2017, Pages 531-536
نویسندگان
T.R. Gopalarao, Bibhuti Dash, S. Ravi,