کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9834158 | 1524907 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Isotope effect in nearly half-doped R1âxSrxMnO3 manganites (R=Sm, NdTb, NdEu)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Isotope effect in nearly half-doped R1âxSrxMnO3 manganites (R=Sm, NdTb, NdEu) Isotope effect in nearly half-doped R1âxSrxMnO3 manganites (R=Sm, NdTb, NdEu)](/preview/png/9834158.png)
چکیده انگلیسی
The effect of 16Oâ18O isotope substitution on the electrical resistance and magnetic susceptibility of nearly half-doped R1âxSrxMnO3 manganites was studied for ceramic samples with R=Sm (x=0.425-0.525), NdTb and NdEu (x=0.45). In these compounds, x=0.5 is a critical doping level for the crossover between ferromagnetic (FM) metal and A-type antiferromagnetic (AFM) insulator. It was demonstrated that the oxygen isotope substitution drastically affects the phase diagram of the studied manganites favoring their enhanced inhomogeneity, stabilizing the insulating AFM state, and even causing the metal-insulator transition (MIT). This suggests that such a MIT is closely related to the FM-AFM crossover independent of the specific nature of magnetic state in manganites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volumes 290â291, Part 2, April 2005, Pages 917-920
Journal: Journal of Magnetism and Magnetic Materials - Volumes 290â291, Part 2, April 2005, Pages 917-920
نویسندگان
N.A. Babushkina, A.N. Taldenkov, E.A. Chistotina, O.Yu. Gorbenko, A.R. Kaul, K.I. Kugel,