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
Prof. Dr. Özgür ÖZTÜRK Kastamonu Üniversitesi, Türkiye
I. Belenli
Bolu Abant İzzet Baysal Üniversitesi, Türkiye
Makale Türü Diğer (Teknik, not, yorum, vaka takdimi, editöre mektup, özet, kitap krıtiği, araştırma notu, bilirkişi raporu ve benzeri) (Uluslararası alan indekslerindeki dergilerde yayınlanan teknik not, editöre mektup, tartışma, vaka takdimi ve özet türünden makale)
Dergi Adı Journal of Alloys and Compounds
Dergi ISSN 0925-8388 Wos Dergi Scopus Dergi
Makale Dili İngilizce Basım Tarihi 03-2009
Cilt / Sayı / Sayfa 471 / 1 / 142–146 DOI 10.1016/j.jallcom.2008.03.122
UAK Araştırma Alanları
Süper İletkenler
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-2, in comparison with those of undoped samples. The gold diffusion in Bi1.8Pb0.35Sr1.9Ca2.1Cu 3Oy has been studied over the temperature range of 500-830 °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 °C was described by the relation D = 5 × 10-4 exp (-1.09 eV/kBT). The possible reasons for the observed improvements in microstructure and superconducting properties due to Au diffusion were discussed. © 2008 Elsevier B.V. All rights reserved.
Anahtar Kelimeler
Activation energy | Au diffusion | Diffusion coefficient | Transition temperature
Pdf İndir
Science Direct
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
Web of Science 15
Scopus 14
The effect of Au diffusion on some physical properties of Bi1.8Pb0.35Sr1.9Ca2.1Cu3Oy superconductors

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İletişim
  • Kastamonu Üniversitesi Rektörlüğü, Kuzeykent Kampüsü, Merkez/Kastamonu
  • unis@kastamonu.edu.tr 03662801000
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