Structural and superconducting properties of Bi1.7Pb0.4Sr2−xGdxCa1.1Cu2.1Oy system

The effect of MgCO3 addition on the superconducting properties of Bi2223 superconductors

“…Since the discovery of BiSrCaCuO(BSCCO) high-T C superconductors [1,2], great progress has been achieved in enhancing transport properties of (Bi,Pb) 2 Sr 2 Ca 2 Cu 3 O y (Bi2223) superconductor [3][4][5][6][7][8][9][10][11][12][13]. The BiSrCaCuO(BSCCO) system mainly contains three phases under the general formula Bi 2 Sr 2 Ca n−1 Cu n O 2n+4+ı where n = 1, 2 and 3 refer to the number of CuO 2 layers and incorporate the 20, 85 and 110 K superconducting phases, respectively [14][15][16].…”

Superconducting and Transport Properties of (Bi-Pb)-Sr-Ca-Cu-O with Nano-Cr2O3 Additions

“…The critical temperature, T c , and critical current density, J c , are found to increase with Gd substitution at the Sr site. 2 At 77 K, the self-field J c of the samples with added Nd was found to be much higher than the undoped one. 3 In particular a small amount of chromium oxide doping improves the flux pinning, with the effective pinning center due to Cr substitution for Cu, while excessive Cr-ion doping degrades the superconductivity of Bi 1.6 Pb 0.4 Sr 2 Ca 2-Cu 3 O 10 (2223).…”

Effect of La Doping on the Crystal Structure, Electric, Magnetic and Morphologic Properties of the BSCCO System

“…There are several studies that analyze various doping elements in different sites of BSCCO, such as rare earth elements 4,[9][10][11][12][13][14][15][16][17][18]23,27,29 , oxides as the Cr 2 O 3 26 , and some alkali metals and transition elements (Na, Li, Ba, Zn, Y, V, Fe, Hg, Pb) 1,6,9,[19][20][21][22]24,25,28,29,30 . Those studies have shown changes in crystal structure, electric, morphologic and magnetic properties above a certain dopant content 4,5,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]31 .…”

“…Those studies have shown changes in crystal structure, electric, morphologic and magnetic properties above a certain dopant content 4,5,[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]31 . However, the specific methodologies used in the doping processes remain unclear.…”

“…Then, changes in the charge reservoir layers with the substitution of La 3+ for Sr 2+ is induced and consequently, the amount of charge carriers in the superconducting planes is changed 4 . This behavior is usually due to the insulator-metal transition which occurs with other rare earth dopant elements, e.g., Y 5 , Gd 12 , Ho 14 and Dy 16 in the BSCCO system. Fig.…”