کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5490083 | 1524777 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, structure and magnetic properties of nanostructured La1âxAxFe0.5Mn0.5O3 (A = Ca, Sr and Pb; x = 0 & 0.25) perovskites
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The effect of hole doping on magnetic properties of LaFe0.5Mn0.5O3 have been investigated. All the ceramics samples La1âxAxFe0.5Mn0.5O3 (A = Ca, Sr and Pb; x = 0 & 0.25) were synthesized at 500 °C by sol-gel method and the particles size were found to be in nanodimension. The samples were characterized by X-ray and electron diffraction, HRTEM and both dc and ac-magnetization measurements. The X-ray and electron diffraction patterns were indexed by cubic Pm-3m space group. The particle size of the LaFe0.5Mn0.5O3 is â¼100 nm, whereas the Pb-doped sample is â¼50 nm and for Ca or Sr doped samples the size is â¼10-30 nm. Both dc and ac-susceptibility measurements suggest that the effect of hole doping and A-site cationic radius in LaFe0.5Mn0.5O3 have no significant role on magnetic properties. However, the particle size plays an important role on magnetic property due to the development of surface ferromagnetic cluster at nanoscale. The competing interactions lead to magnetic phase separation where local ferromagnetic clusters coexist within the antiferromagentic matrix in all the samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 444, 15 December 2017, Pages 68-76
Journal: Journal of Magnetism and Magnetic Materials - Volume 444, 15 December 2017, Pages 68-76
نویسندگان
Aslam Hossain, Debamalya Ghosh, Uma Dutta, Pravin S. Walke, Natalia E. Mordvinova, Oleg I. Lebedev, Bhavesh Sinha, Kamalesh Pal, Arup Gayen, Asish K. Kundu, Md. Motin Seikh,