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Improved superconducting properties in melt-textured ErBa2Cu3O7−δ ceramic material

✍ Scribed by S.J. Peng; M.D. Lan; P. Klavins; J.Z. Liu; R.N. Shelton

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
355 KB
Volume
212
Category
Article
ISSN
0921-4534

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✦ Synopsis

Magnetic properties of a melt-textured ErBa2Cu3OT_6 have been studied. The superconducting properties are much improved over those of the sintered sample. The inductive critical current density has the same order of magnitude as in YBa2Cu307_a single crystals and has a reduced magnetic field dependence. The density was measured as 7.04 g/cm 3, which corresponds to 99. 1% of the theoretical value. The lower critical field H¢l is also determined via magnetization measurements.

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We have improved surface resistance (R S ) properties of ErBa 2 Cu 3 O 7Àd (ErBCO) films by using BaTiO 3 (BTO) doping (BTO + ErBCO). The as-grown BTO + ErBCO films did not have enough carriers. We solve this problem by using O 3 + O 2 as background gas during the growth of BTO + ErBCO films. Then,