کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819712 | 1525770 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fabrication and characterization of superconducting (Cu, C)Ba2CuO4±δ thin films
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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: Fabrication and characterization of superconducting (Cu, C)Ba2CuO4±δ thin films Fabrication and characterization of superconducting (Cu, C)Ba2CuO4±δ thin films](/preview/png/1819712.png)
چکیده انگلیسی
We have investigated the structural modulation and variation of superconducting transition temperature of (Cu, C)Ba2CuO4±δ ((Cu, C)-1201) thin films prepared by rf magnetron sputtering on (1 0 0) SrTiO3 single crystal substrates in the off-axis configuration. Thin films were deposited in a gas mixture of Ar, O2 and CO2 where the Ar:O2 ratio was kept constant at 1:2 with a total pressure of 15 mTorr and CO2 gas pressure was varied between 1 and 3 mTorr. XRD patterns revealed the formation of high quality thin films with c-axis oriented perpendicular to the plane of the substrate. The value of the c-lattice parameter varied in the range, c = 8.29-8.33 Ã
. These films had a superconducting resistive transition temperature (Tc onset) ranging between 25 and 40 K above which, almost all films showed semiconductor like behavior. Superconductivity in (Cu, C)-1201 thin films was further confirmed by the diamagnetic response observed in ac susceptibility measurement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 466, Issues 1â2, 1 November 2007, Pages 111-114
Journal: Physica C: Superconductivity - Volume 466, Issues 1â2, 1 November 2007, Pages 111-114
نویسندگان
Shipra Singh, Y. Tanaka, A. Sundaresan,