عنوان المقالة: Synthesis and Study the Structural and Electrical and Mechanical Properties of High Temperature Superconductor Tl0.5Pb0.5Ba2Can-1CunxNixO2n+ 3-δ Substituted with Nickel Oxide for n=3
لهيب أحمد | Laheeb Ahmed | 5730
نوع النشر
مجلة علمية
المؤلفون بالعربي
الملخص الانجليزي
The effect of nickel oxide substitution on the pure phases superconductor Tl0.5Pb0.5Ba2Can- 1Cun-xNixO2n+3-δ (n=3) where x = (0, 0.2, 0.4, 0.6, 0.8 and 1.0) is studied in this research. The specimens in this work were prepared with used procedure of solid state reaction with sintering temperature 8500C for 24 h. We used technical (4-prob) to calculated and the critical temperature Tc . The results of the XRD diffraction analysis showed that the structure for pure and doped phases was tetragonal with phases high-Tc phase (1223), (1212) and low-Tc phase (1202) and add to the presence of some impure phase. It was noted the value a=b,c the parameter of the lattice increment with the increment of Ni content. The increment of (NiO) concentration effects electrical resistivity, dielectric constant and the hardness.
تاريخ النشر
06/01/2018
رقم المجلد
رقم العدد
رابط الملف
تحميل (113 مرات التحميل)
الكلمات المفتاحية
Superconductors, critical temperature, solid state reaction, dielectric constant.
رجوع