Activation energy for crystallisation of melt-quenched (Bi1.0Tl0.5Ga0.5) Sr2Ca2Cu3O10+y superconducting glass-ceramics
Küçük Resim Yok
Tarih
1997
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Academic Press Ltd, London, United Kingdom
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A glass of the BiSrCaCuO superconducting system with nominal (Bi1.0Tl0.5Ga0.5)Sr2Ca2Cu3O10+y composition has been prepared by the melt-quenched method. The crystallisation kinetics of the glass was investigated using non-isothermal analysis. The activation energy for crystallisation was found to be 420.6Kjmol-1. The superconducting transition and zero resistance temperatures were Tc = 118.8K and Tzero = 114.6K respectively. The calculated critical current density was Jc = 8.85 ×106 Acm-2 at 4.5K. In general, substitution of both Tl+3 and Ga+3 for Bi+3 increased the activation energy for crystallisation and enhanced the superconducting phase formation.
Açıklama
Anahtar Kelimeler
Activation energy, Critical current density (superconductivity), Crystallization, Glass, Reaction kinetics, Superconducting transition temperature, Superconducting ceramics, Oxide superconductors
Kaynak
Superlattices and Microstructures
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
21
Sayı
Suppl A
