| Yazarlar |
Prof. Dr. Özgür ÖZTÜRK
Kastamonu Üniversitesi, Türkiye |
Cabir Terzioğlu
Abant İzzet Baysal Üniversitesi, Türkiye |
|
İbrahim Belenli
Abant İzzet Baysal Üniversitesi, Türkiye |
| Özet |
| In order to investigate the influence of Au doping and diffusion-annealing temperature on the mechanical and superconducting properties of Bi-2223, Bi 1.8Pb 0.35Sr 1.9 Ca 2.1Cu 3O y superconductors were prepared by standard solid-state reaction methods. Doping of Bi-2223 was carried out by means of gold diffusion during sintering from an evaporated gold film on pellets. The investigation consisted of scanning electron microscopy, dc resistivity and hardness measurements. Electrical-resistivity measurements indicated that the room-temperature resistivity value decreased with decreasing diffusion-annealing temperature from 830 to 500 °C and these samples (G830, G800, G750, G700, G600 and G500) show the resistive behavior above the onset critical transition temperature with the zeroresistivity transition temperatures of 104 K, 80 K, 98 K, 95 K, 102 K and 103 K, respectively. To investigate mechanical properties of the samples, we have measured the diagonal length as a function of test load in the range of 0.245-2.940 N. Mechanical properties (microhardness, Young's modulus, yield strength and fracture toughness) of the samples are found to be load and diffusion-annealing temperature dependent. In addition, we have calculated the load independent hardness, Young's modulus, yield strength, and fracture toughness of the samples. The possible reasons for the observed changes in superconducting and mechanical properties due to Au diffusion and diffusion-annealing temperature were discussed. © Springer Science+Business Media, LLC 2010. |
| Anahtar Kelimeler |
| Au doping | Bi-2223 | Bi-based cuprates | Mechanical properties of BSCCO | Microhardness |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM |
| Dergi ISSN | 1557-1939 |
| Dergi Tarandığı Indeksler | SCI |
| Makale Dili | İngilizce |
| Basım Tarihi | 01-2011 |
| Cilt No | 24 |
| Sayı | 1 |
| Sayfalar | 381 / 390 |
| Doi Numarası | 10.1007/s10948-010-0998-z |
| Makale Linki | http://link.springer.com/10.1007/s10948-010-0998-z |
| Atıf Sayıları | |
| WoS | 15 |
| SCOPUS | 14 |
| Google Scholar | 19 |
