The microstructure and superconductivity of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> rapidly solidified by a pulse laser
J G Huang; X P Jiang; J S Zhang; Y Z Wang; H Q Hao; M Jiang; Y L Ge; G W Qiao; Z Q Hu; J G Huang; Inst. of Metal Res., Acad. Sinica, Shenyang, China; X P Jiang; Inst. of Metal Res., Acad. Sinica, Shenyang, China; J S Zhang; Inst. of Metal Res., Acad. Sinica, Shenyang, China; Y Z Wang; Inst. of Metal Res., Acad. Sinica, Shenyang, China; H Q Hao; Inst. of Metal Res., Acad. Sinica, Shenyang, China; M Jiang; Inst. of Metal Res., Acad. Sinica, Shenyang, China; Y L Ge; Inst. of Metal Res., Acad. Sinica, Shenyang, China; G W Qiao; Inst. of Metal Res., Acad. Sinica, Shenyang, China; Z Q Hu; Inst. of Metal Res., Acad. Sinica, Shenyang, China
Журнал:
Superconductor Science and Technology
Дата:
1988-08-01
Аннотация:
The microstructure and superconductivity of the compound YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> rapidly solidified by a pulse laser for different cooling conditions have been investigated. The results show that a densified and refined microstructure can be formed by the rapid solidification process, which has a tendency to restrain any incongruent decomposition in the compound. After an annealing treatment, the critical current density of the laser melted layer is as high as 600 A cm<sup>-2</sup>, which is much greater than that of the sintered sample.
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