کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7921300 1511747 2018 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Critical behaviors of ferromagnetic-paraferromagnetic transition in La0.5Sr0.5MnO3 nanowires bundles under low applied field
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Critical behaviors of ferromagnetic-paraferromagnetic transition in La0.5Sr0.5MnO3 nanowires bundles under low applied field
چکیده انگلیسی
The critical behaviors of the perovskite La0.5Sr0.5MnO3 nanowires bundles around the ferromagnetic-paraferromagnetic (FM-PM) transition through modified Arrott plot and critical isothermal analysis is investigated. The obtained critical exponents are determined by modified Arrott Noakes equation (H/M)1/γ=(T−Tc)/Tc+(M/M1)1/β under a low external magnetic field of 0-0.8T, where β = 0.93 and γ = 2.25 were obtained at Tc ≈ 328 k. The availability of the parameters is proved by fulfilling the Widom scaling relation δ=1+γ/β which obeys the single scaling equation of M(H,|ε|)=εβf±(H/|ε|β+γ). The critical exponents determined in this system is unique and not following theories in any published literature. It may be attributed to the nano-size effect and surface magnetism of this system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 216, 1 September 2018, Pages 260-264
نویسندگان
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