Flexible superconducting whiskers of the Li-doped Bi-Sr-Ca-Cu oxide

Matsubara, Ichiro; Tanigawa, Hideo; Ogura, Toru; Yamashita, Hiroshi; Kinoshita, Makoto; Kawai, Tomoji

doi:10.1063/1.103238

Cited by 39 publications

(16 citation statements)

References 16 publications

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“…For example, Pb doping of Bi-Sr-Ca-Cu-O and Tl-Sr-Ca-Cu-O superconducting systems induces a partially melted liquid phase that eases the diffusion of the elements to form the high-T c phases and to increase their critical current (I c ) [7,8]. Li doping of Bi-based superconductors have been also studied [9][10][11]. Li doping reduces the melting and formation temperatures of the Bi-based superconductors leading to shorter annealing times.…”

Section: Introductionmentioning

confidence: 98%

Synthesis, X‐ray data, and Hall effect measurements of Li‐doped Tl‐Ba‐Ca‐Cu‐O superconductor

Kayed¹

2003

Cryst. Res. Technol.

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Lithium-doped Tl-based superconductor was prepared by adding an amount of 0.3 mol.% to the Tl 1.8 Ba 2 Ca 2.2 Cu 3 O x compound. The usual solid-state reaction method has been applied under optimum conditions. The x-ray data of the sample show a tetragonal structure with a high ratio of Tl-2223 superconducting phase. The sample showed a transition at 125 K and the zero resistance was observed at 117 K. Longitudinal (transport) and transverse (Hall) resistivities were measured at different temperatures under different magnetic fields and the data were interpreted. A positive Hall coefficient was observed at normal state and a sign reversal appears at temperatures lower than the critical temperature.

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Section: Introductionmentioning

confidence: 98%

Synthesis, X‐ray data, and Hall effect measurements of Li‐doped Tl‐Ba‐Ca‐Cu‐O superconductor

Kayed¹

2003

Cryst. Res. Technol.

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“…It was shown that these materials are highly flexible, and they can be bent elastically to form a different shape with various radius. 1,2 At the same time, they have high mechanical strength and large critical current density compared to the polycrystalline materials. [3][4][5] Many attempts have been done to fabricate single crystal superconducting whiskers using different superconducting systems and techniques.…”

Section: Introductionmentioning

confidence: 99%

Effects of SnO on growth and physical properties of BSCCO whiskers

Altın

Aksan

Balci

et al. 2010

Materials Science and Technology

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Superconductor whiskers doped with SnO have been fabricated by annealing a melt quenched (Bi 2 Sn 1 )-223 precursor using suitable heat treatment cycles. Approximately 5 mm thick, 90 mm wide and 5 mm long whiskers were fabricated, and their physical, electrical and magnetic properties were investigated. Crystallisation activation energies of glass phase fabricated were calculated to be 390 kJ mol 21 using Kissinger method based on the differential thermal analysis data. The T c value of the whiskers was found to be 94 K from M-T measurement. The magnetisation of whiskers before superconducting transition increased with decreasing temperature, and after superconducting transition, the magnetisation of whiskers decreased, from positive to negative, due to the diamagnetic nature of superconductivity. The change on magnetisation dependence of applied magnetic fields (M-H) showed that whiskers have paramagnetic-diamagnetic multiphase structure.

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“…An onset temperature of 98 K has been reported for a Bi-Sr-Ca-Cu oxide 2212 phase in which lithium is partially substituted for copper [12]. Furthermore, the inclusion of lithium in superconducting Bi-Sr-Ca-Cu oxide flexible whiskers, prepared by heating a melt-quenched plate in oxygen, is effective in raising the Tc, in both the 2212 phase and the 2223 phase [13]. Electrochemical intercalation affords not only the advantage of room-temperature implementation, but also the ease of control of the level of doping in the superconductor.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical intercalation of alkali metals into superconducting oxide phases

Macklin¹,

Claude²,

Brien³

et al. 1992

J. Mater. Chem.

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The electrochemical intercalation of alkali metals into several superconducting oxide phases has been carried out by galvanostatic discharge of an electrochemical cell. In each case intercalation appears to result in a decrease in the volume fraction of the superconducting phase. Intercalation of lithium into an indium-doped Bi-Sr-Ca-Cu oxide gave a material of approximate composition Li0.23Bi1.9ln0.1Sr2CaCu2O8+ which the superconducting onset temperature, Tc was increased by ca. 15 K above that of the original compound. Intercalation into other superconducting bismuth oxides produced increases in some cases, and decreases in others. Intercalation into the thallium 2212 superconductor produced no discernible change in Tc.

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Flexible superconducting whiskers of the Li-doped Bi-Sr-Ca-Cu oxide

Cited by 39 publications

References 16 publications

Synthesis, X‐ray data, and Hall effect measurements of Li‐doped Tl‐Ba‐Ca‐Cu‐O superconductor

Synthesis, X‐ray data, and Hall effect measurements of Li‐doped Tl‐Ba‐Ca‐Cu‐O superconductor

Effects of SnO on growth and physical properties of BSCCO whiskers

Electrochemical intercalation of alkali metals into superconducting oxide phases

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