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✦   LIBER   ✦

The superconducting properties and crystal structure of YSr2(Cu0.9Ti0.1)3O7+δ

✍ Scribed by S.J. Wuu; D.H. Chen; T.W. Liu; C.H. Cheng; C.T. Chang; S.R. Sheen; M.K. Wu

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
470 KB
Volume
226
Category
Article
ISSN
0921-4534

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✦ Synopsis

The superconducting properties and crystal structure of YSrz(Cu Ti ) 0 es a, s ,+a were investigated. These ceramic samples were prepared in air via the solid-state method. Single-phase samples were obtained and annealed at different temperature between 300-700°C. After the annealing, YSr,(Cu,.,Ti

) 0 e, s 7+6 exhibited superconductivity with a transition temperature of 35 K. The magnetic susceptibility measurement and iodometry titration have revealed that the superconducting transition temperature of YSr,(Cuo.sTio.I )@,+a increases as the hole concentration, (Cu-O)+', and the oxygen content increase. All these samples with different oxygen content are tetragonal and in the powder X-ray results it was indicated that the Ti atoms preferentially occupy the sites of the chain copper atoms.

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