کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9841792 1525797 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal treatment effect of the oxidized La2CuO4+δ: The access of continuous and discontinuous Tc
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Thermal treatment effect of the oxidized La2CuO4+δ: The access of continuous and discontinuous Tc
چکیده انگلیسی
Superconductive La2CuO4+δ with Tc ∼ 40 K has been obtained by chemical oxidation using NaClO solution. The oxygen-decrease processes have been studied during the thermal treatment processes at different temperatures. The material separates into discrete phases with different transition temperatures for samples treated at 100 °C, consistent with the oxygenation process reported previously. However, Tc decreases continuously in samples treated at 300 °C, similar to the superconducting properties of La2−xSrxCuO4. In addition, the coexistence of superconducting and antiferromagnetic phases cannot be observed in our samples. The interrelation between the transition temperature and the treatment conditions such as temperature and time is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 425, Issues 1–2, 1 September 2005, Pages 37-43
نویسندگان
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