The effect of Au diffusion on some physical properties of Bi1 8Pb0 35Sr1 9Ca2 1Cu3Oy superconductors
Yazarlar (3)
C. Terzioglu
Bolu Abant İzzet Baysal Üniversitesi, Türkiye
Bolu Abant İzzet Baysal Üniversitesi, Türkiye
Prof. Dr. Özgür ÖZTÜRK Kastamonu Üniversitesi, Türkiye
I. Belenli
Bolu Abant İzzet Baysal Üniversitesi, Türkiye
Bolu Abant İzzet Baysal Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Journal of Alloys and Compounds | ||
| Dergi ISSN | 0925-8388 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 03-2009 |
| Cilt / Sayı / Sayfa | 471 / 1 / 142–146 | DOI | 10.1016/j.jallcom.2008.03.122 |
| Makale Linki | http://linkinghub.elsevier.com/retrieve/pii/S0925838808005148 | ||
| Özet |
| We have investigated the effect of the gold diffusion on the crystal structure and superconducting properties of Bi-2223 superconducting samples employing X-ray diffraction (XRD), scanning electron microscopy (SEM), critical transition temperature, critical current density, and room temperature resistivity measurements. Doping of Bi-2223 was carried out by means of gold diffusion from an evaporated gold film on pellets during sintering. XRD patterns and SEM micrographs are used to obtain information about Bi-2223 phase ratio, lattice parameters and grain size, respectively. Au doping of the samples increased the critical transition temperature and the critical current density from 100 {+-} 0.2 to 104 {+-} 0.2 K and from 40 to 125 A cm{sup -2}, in comparison with those of undoped samples. The gold diffusion in Bi{sub 1.8}Pb{sub 0.35}Sr{sub 1.9}Ca{sub 2.1}Cu{sub 3}O{sub y} has been studied over the temperature range of 500-830 deg. C using the technique of successive removal of thin layers and measurement of the sample's conductivity at room temperature. The temperature dependence of the Au diffusion coefficient in the range of 500-830 deg. C was described by the relation D = 5 x 10{sup -4} exp (-1.09 eV/k{sub B}T). The possible reasons for the observed improvements in microstructure and superconducting properties due to Au diffusion were discussed. |
| Anahtar Kelimeler |
| Activation energy | Au diffusion | Diffusion coefficient | Transition temperature |
Science Direct
The effect of Au diffusion on some physical properties of Bi1 8Pb0 35Sr1 9Ca2 1Cu3Oy superconductors
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 15 |
| Scopus | 14 |
| Google Scholar | 16 |