Abstract
With the aim of substituting Cu with Li in the Bi 2Sr 2CaCu 2O 8 crystal, preparation of single crystals by a traveling solvent floating zone method has been undertaken and single crystals with maximum dimensions 30×4×0.2 mm 3 have successfully been obtained. The presence of Li in the crystal structure and the solubility limit of as much as 13% in the molar ratio Li/(Li+Cu) were confirmed by chemical analyses. Although the location of Li in the crystal structure and the precise oxygen content remain unclear, the crystals show a small elevation of superconductive transition temperature, up to T c = 93 K, with increase in Li content. Some typical data of magnetic susceptibility and conductivity are also presented.
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