کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1820450 | 1525785 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of Zn substitution on the state of oxygen deficiency and hole concentration in Y1âxCaxBa2(Cu1âyZny)3O7âδ
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The effect of Zn substitution on the state of oxygen deficiency and hole concentration in Y1âxCaxBa2(Cu1âyZny)3O7âδ The effect of Zn substitution on the state of oxygen deficiency and hole concentration in Y1âxCaxBa2(Cu1âyZny)3O7âδ](/preview/png/1820450.png)
چکیده انگلیسی
We have investigated the effect of Zn substitution on the hole content, p, and the oxygen deficiency, δ, for a series of high-quality crystalline c-axis oriented thin films and polycrystalline Y1âxCaxBa2(Cu1âyZny)3O7âδ compounds over a wide range of composition (x, y, and δ). p was determined from the room-temperature thermopower, S[290 K]. When annealed at a given temperature and oxygen partial pressure, a small but systematic variation in S[290 K] was observed with Zn, for all the samples. From the analysis of the temperature derivative of resistivity, dÏ/dT, at 300 K, which varies almost linearly with p, irrespective of the composition of the sample, and the thermo-gravimetric analysis (TGA), we have found that annealing under identical conditions makes the Zn-substituted compounds somewhat more oxygen deficient compared to the Zn-free ones.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 443, Issues 1â2, 1 September 2006, Pages 43-48
Journal: Physica C: Superconductivity - Volume 443, Issues 1â2, 1 September 2006, Pages 43-48
نویسندگان
S.H. Naqib,