کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1259219 971667 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Critical parameters near the phase transition temperature in La0.67–xDyxPb0.33MnO3
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Critical parameters near the phase transition temperature in La0.67–xDyxPb0.33MnO3
چکیده انگلیسی

La0.67–xDyxPb0.33MnO3 (x=0.00 and x=0.10) were elaborated by the solid state method and checked by X-ray diffraction. Close to magnetic temperature transition, the order transition and the critical behavior were investigated by dc magnetization measurements versus x composition. The critical properties were investigated through various techniques such as modified Arrott plot (MAP), Kouvel-Fisher (KF) method and critical isotherm (CI) analysis based on the data of static magnetic measurements recorded around the Curie temperature TC. The values of critical exponents (β and γ) estimated were found to lie between those predicted for a 3D-Ising model for x=0.00 and those of 3D-Heisenberg model for x=0.10. The reliability of the critical exponent's values was confirmed by the Widom scaling relation and the universal scaling hypothesis. The change in the universality class should be due to the increase of the Dy content.

Graphical AbstractMaster curve behavior of the curves as a function of the rescaled temperature for different magnetic field (μ0H=5, 4, 3, 2 T) of La0.57Dy0.1Pb0.33MnO3Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 33, Issue 2, February 2015, Pages 168–176
نویسندگان
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