Electrical transport properties of dense bulk YBa2Cu4O8 produced by hot isostatic pressing

Highly dense sintered YBa2Cu4O8 has been produced by hot isostatic pressing (HIP). The electrical resistivity varrho of this material has been measured as a function of temperature T and pressure varrho in the range 40–650 K and 0–0.7 GPa. Both the temperature dependence and the pressure dependence...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1990-10, Vol.170 (5-6), p.521-531
Main Authors: Andersson, B.M., Sundqvist, B., Niska, J., Loberg, B., Easterling, K.
Format: Article
Language:English
Subjects:
Condensed matter physics
critical current density
Fysik
Hi-Tc
high pressure
high transition temperature superconductors
HIP
hot isostatic pressing
HTS
Kondenserade materiens fysik
NATURAL SCIENCES
NATURVETENSKAP
Physics
resistivity
superconductivity
Supraledning
Y-124
YBa2Cu4O8
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Summary:Highly dense sintered YBa2Cu4O8 has been produced by hot isostatic pressing (HIP). The electrical resistivity varrho of this material has been measured as a function of temperature T and pressure varrho in the range 40–650 K and 0–0.7 GPa. Both the temperature dependence and the pressure dependence of varrho are found to be well described by a model based on the standard Bloch-Grüneisen theory. It is pointed out that varrho is liner in T only under isobaric conditions, while varrho is strongly nonlinear in all high-Tc superconductors under isochoric (constant volume) conditions. The critical current density of the material is 900 A/cm2 at 4 K, while the resistivity is 630 μΩ cm at 294 K.
ISSN:0921-4534
1873-2143
DOI:10.1016/0921-4534(90)90025-A