Properties of Rare-Earth Substitution in Bi(Pb)-2223 Superconductor Prepared by Coprecipitation Method

Jamil Siti Hawa; Azhan Hashim; S.Y.S. Yahya; Azman Kasim; Hassan Nurul Hidayah; Abd Wahab Norazidah

doi:10.4028/www.scientific.net/AMR.895.83

Paper Titles

Morphology and Optical Studies of (1-x)ZnAl₂O₄ – xSiO₂ Thin Films Prepared by Sol-Gel Method
p.63

Effect of Heat Treatment on Ca Substitution in a Porous Y(Ba_1-xCa_x)₂Cu₃O_7-δSuperconductor
p.71

Effects of (La_0.67Ca_0.33MnO₃)x (x= 0.0, 0.8, 1.0) Additions on the Structural and Superconducting Transition Temperature of YBa₂Cu₃O_7-δSystem
p.75

Comparison of K, Ca and Zn Substitution on the Superconducting and Structural Properties of YBa₂Cu_3-xM_XO_δ
p.79

Properties of Rare-Earth Substitution in Bi(Pb)-2223 Superconductor Prepared by Coprecipitation Method
p.83

Effects of Nano-Sized NiF₂ Addition in Bi_1.4Pb_0.6Sr₂Ca₂Cu₃O_10+δ Superconductor
p.87

Effect of Pr-Substitution in Eu_1-xPr_xBaSrCu₃O_7-δ on the Superconductivity and Transport Properties
p.91

Fabrication and Characterization of Porous and Non-Porous Y₂CaBa₄Cu₇O_δ Superconductor
p.95

AC Losses in Sn-Doped Bi_1.6Pb_0.4Sr₂(Ca_1-xSn_x)₂Cu₃O_δ Superconductors
p.99

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 895Properties of Rare-Earth Substitution in...

Properties of Rare-Earth Substitution in Bi(Pb)-2223 Superconductor Prepared by Coprecipitation Method

Abstract:

The superconducting and structural properties of pure and rare-earth elements substituted in Bi (Pb)-2223 samples were investigated. All samples were fabricated by the oxalate coprecipitation (COP) method using metal acetates and oxalic acid as starting materials. The electrical and resistivity were measured by using the four-probe method, while phase purity and microstructural examination were performed by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM). The pure sample has a critical temperature of (T_{c zero}) 100 K, which decreased to 98, 96 and 97 K for the Eu, Dy and Yb samples, respectively. At 77 K, the un-doped sample gives the highest J_c, which gradually decreases with rare-earth substitution as one move towards the right in the lanthanide series. XRD results reveal two main phases (Bi-2223 and Bi-2212) with decreased amounts of Bi-2223 phases by rare-earth substitution. SEM micrographs showed flaky grains but Yb showed better grain alignment compared with the other substitutions.