The influence of Gd addition on microstructure and transport properties of Bi-2223

Terzioğlu, C.; Aydin, H.; Öztürk, O.; Bekiroğlu, Erdal; Belenli, I.

doi:10.1016/j.physb.2008.04.033

Cited by 41 publications

(21 citation statements)

References 26 publications

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“…This phenomenon can be interpreted on the basis of the regression in the superconducting anisotropy factor, studied in detail in Ref. [41]. Moreover, decrease in the lattice parameter c was clearly revealed with increasing Gd addition [41].…”

Section: Critical Current Densitymentioning

confidence: 80%

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Investigation of Gd Addition Added on Magnetic and Structural Properties of Bi1.8Pb0.35Sr1.9Ca2.1Cu3Gd x O y Superconductors by ac Susceptibility

Yıldırım

Zalaoğlu

Akdoğan

et al. 2011

J Supercond Nov Magn

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This study reports the effect of Gd addition on magnetic and structural properties of Bi 1.8 Pb 0.35 Sr 1.9 Ca 2.1 Cu 3 Gd x O y superconductor with x = 0, 0.1, 0.2, 0.3, 0.4 and 0.5 by means of ac susceptibility measurements at various ac fields (ranging from 270 to 1352 A/m) and scanning electron microscopy (SEM) images. Critical onset (T on c ) and loss peak temperatures (T p ) were qualitatively estimated from the ac susceptibility curves. The peak temperature at zero acmagnetic field (T p0 ) and intergrain critical current densities (J c ) were theoretically calculated from the ac susceptibility plots via the critical state models. The results show that peak temperatures and critical current densities were found to decrease with increasing Gd addition. Moreover, using a self-field approximation together with J c dependence on temperature, the characteristic length (L c ) associated with the pinning force is estimated to be approximately the same as the average grain size (R g ) of the pinning center because of the linear decrease in J c with increasing temperature. Surface morphology and grain connectivity of the samples were also obtained to degrade with increase in the Gd addition from SEM investigations.

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Section: Critical Current Densitymentioning

confidence: 80%

“…[41]. Moreover, decrease in the lattice parameter c was clearly revealed with increasing Gd addition [41]. In other words, when the Ca 2+ ions are replaced by Gd 3+ ions, T c of the material decreases because of the decrease in the for- Fig.…”

Section: Critical Current Densitymentioning

confidence: 91%

Investigation of Gd Addition Added on Magnetic and Structural Properties of Bi1.8Pb0.35Sr1.9Ca2.1Cu3Gd x O y Superconductors by ac Susceptibility

Yıldırım

Zalaoğlu

Akdoğan

et al. 2011

J Supercond Nov Magn

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“…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 .…”

Section: Introductionmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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Studies of the doping process can provide a better understanding of the superconducting mechanisms in cuprous oxide materials. In this work, we studied the doping effects on the crystal structure, electric, morphologic and magnetic properties of the BSCCO system with the nominal composition Bi 1.6 Pb 0.4 Sr (2-x) RE x Ca 2 Cu 3 O (10-δ) . Here, the rare earth element (RE) was replaced by La in the sites of Sr. The x was ranged from 0.0 to 2.0, in steps of 0.5. The samples were prepared based on Pechini's method. The resulting powder was pressed at room temperature and the pellets were submitted to several heat treatments. The characterizations confirm the La in the sites of Sr however; the superconducting properties of the sample were not improved.

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“…In recent investigations on the high-T c superconducting ceramics, the BSCCO system has received much attention because of its transition temperature and its high critical current density. Chemical doping, substitution, addition and diffusion with different elements at various amounts and adjusting the preparation condition play a very important role in high-T c superconductors [2]. It is well known that there are several phases in the BSCCO system.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Magnetic Properties of (Bi, Pb)2Sr2Ca2Cu3O10+δ Superconductor

Verma

Kumar

Ganesan

et al. 2011

J Supercond Nov Magn

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The sample of nominal composition Bi 1.6 Pb 0.4 Sr 2 Ca 2 Cu 3 O 10+δ was prepared by the solid-state reaction method and systematically studied for their magnetic properties. The phase identification/gross structural characteristics of synthesized (HTSC) materials explored through powder X-ray diffractometer reveals that all the samples crystallize in orthorhombic structure with lattice parameters a = 5.4054 Å, b = 5.4111 Å and c = 37.0642 Å. The critical transition temperature (T c ) measured by the standard four-probe method has been found to decrease from 108 K. The surface morphology investigated through scanning electron microscope and atomic force microscopy (SEM and AFM) results that voids and grains size increases of the Bi-2223 sample. The structural/microstructural characteristics (TEM) of Bi-based cuprate HTSC phase exhibit curious structural features including the occurrence of super lattice modulation along the b direction and c direction that have been observed. The presence of this streak reveals the presence of planar disorder representing faults in the stacking of CuO 2 planes. The variation of magnetization with temperature (M-T curve) of the same Bi-based HTSC materials was measured by cooling the sample in zero fields (ZFC) and an applied field of 0.05T (here after referred as FC).

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The influence of Gd addition on microstructure and transport properties of Bi-2223

Cited by 41 publications

References 26 publications

Investigation of Gd Addition Added on Magnetic and Structural Properties of Bi1.8Pb0.35Sr1.9Ca2.1Cu3Gd x O y Superconductors by ac Susceptibility

Investigation of Gd Addition Added on Magnetic and Structural Properties of Bi1.8Pb0.35Sr1.9Ca2.1Cu3Gd x O y Superconductors by ac Susceptibility

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

Synthesis and Magnetic Properties of (Bi, Pb)2Sr2Ca2Cu3O10+δ Superconductor

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