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Impact of Zn substitution on phase formation and superconductivity of Bi1.6Pb0.4 Sr2Ca2Cu3-xZnxO10 with x = 0.0, 0.015, 0.03, 0.06, 0.09 and 0.12 | R.B. Saxena
; Rajiv Giri
; V.P.S. Awana
; H.K. Singh
; M.A. Ansari
; B.V. Kumaraswamy
; Anurag Gupta
; Rashmi Nigam1
; K.P. Singh
; H. Kishan
; O.N. Srivastava
; | Date: |
19 May 2005 | Subject: | Superconductivity; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.str-el | Affiliation: | NPL, Delhi, INDIA), Rajiv Giri (BHU, INDIA), V.P.S. Awana, H.K. Singh, M.A. Ansari, B.V. Kumaraswamy, Anurag Gupta, Rashmi Nigam1, K.P. Singh, H. Kishan (NPL, New Delhi, INDIA) and O.N. Srivastava (BHU, INDIA | Abstract: | Samples of series Bi1.6Pb0.4Sr2Ca2Cu3-xZnxO10 with x = 0.0, 0.015, 0.03, 0.06, 0.09 and 0.12 are synthesized by solid-state reaction route. All the samples crystallize in tetragonal structure with majority (> 90%) of Bi-2223 (Bi2Sr2Ca2Cu3O10) phase (c-lattice parameter ~ 36 A0). The proportion of Bi-2223 phase decreases slightly with an increase in x. The lattice parameters a and c of main phase (Bi-2223) do not change significantly with increasing x. Superconducting critical transition temperature (Tc) decreases with x as evidenced by both resistivity [(T)] and AC magnetic susceptibility [(T)] measurements. Interestingly the decrement of Tc is not monotonic and the same saturates at around 96 K for x > 0.06. In fact Tc decreases fast (~10K/at%) for x = 0.015 and 0.03 samples and later nearly saturates for higher x values. Present results of Zn doping in Bi-2223 system are compared with Zn doped other HTSC (High temperature superconducting) systems, namely the RE-123 (REBa2Cu3O7) and La-214 ((La,Sr)2CuO4). | Source: | arXiv, cond-mat/0505461 | Services: | Forum | Review | PDF | Favorites |
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