Investigation of some physical properties of silver diffusion-doped YBa2Cu3O7-x superconductors
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Dosyalar
Tarih
2005
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Iop Publishing Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Silver diffusion in superconducting YBa2Cu3O7-x (YBCO) has been studied over the temperature range 500-800 degrees C by x-ray diffraction measurements. The diffusion coefficient of Ag in YBCO was determined from the observed increase (0.12%) in the lattice parameter c as compared with the undoped sample. It was shown that the diffusion coefficient of Ag in the temperature range 500-800 degrees C changed from 1 x 10(-10) to 5 x 10(-9) cm(2) s(-1) with an activation energy of about 1.06 eV. For the Ag-doped sample, the critical transition temperature and the critical current density were increased from 90 to 92.5 K and from 60 to 98 A cm(-2) respectively in comparison with those of undoped YBCO. The possible reasons for the observed increases in T-c and J(c) due to Ag diffusion were discussed.
Açıklama
Anahtar Kelimeler
Physical Properties, Superconductors, Silver, Diffusion
Kaynak
Superconductor Science & Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
18
Sayı
9
