Abstract
The variation of critical currents (I{sub c}) and their distributions (CCD) with thickness (t) has been investigated for two high quality YBa{sub 2}Cu{sub 3}O{sub 7-x} samples with different average grain size (AG{approx_equal}10 and 30 {mu}m for samples S{sub 1} and S{sub 2} respectively) in the temperature range 78-90K and in the applied magnetic field H<50 0e. The critical current density (J{sub c}) for S{sub 1} initially increased but later on leveled off on reducing the thickness, whereas for S{sub 2} remained essentially unchanged even after three-fold reduction in thickness. Since the other parameters related to macroscopic homogeneity have not changed on reducing the thickness of the samples, the variations of J{sub c} are interpreted in terms of thickness and grain size dependent self-field effects. The same model explains well the changes of CCD curves with thickness and may also explain the variation of J{sub c} with the grain size, as reported recently for ceramic YBaCuO samples. (author). 18 refs, 7 figs, 2 tabs.
Babic, E;
Prester, M;
Dobrac, D;
Marohnic, Z;
[1]
Bernik, S;
[2]
Nazar, P;
Stastny, P;
Matacotta, F C
- Zagreb Univ., Zagreb (Yugoslavia). Inst. of Physics
- Institut Jozef Stefan, Ljubljana (Yugoslavia)
Citation Formats
Babic, E, Prester, M, Dobrac, D, Marohnic, Z, Bernik, S, Nazar, P, Stastny, P, and Matacotta, F C.
Critical currents in polycrystalline Y Ba{sub 2}Cu{sub 3}O{sub 7-x}: Self-field and grain size dependence.
IAEA: N. p.,
1991.
Web.
Babic, E, Prester, M, Dobrac, D, Marohnic, Z, Bernik, S, Nazar, P, Stastny, P, & Matacotta, F C.
Critical currents in polycrystalline Y Ba{sub 2}Cu{sub 3}O{sub 7-x}: Self-field and grain size dependence.
IAEA.
Babic, E, Prester, M, Dobrac, D, Marohnic, Z, Bernik, S, Nazar, P, Stastny, P, and Matacotta, F C.
1991.
"Critical currents in polycrystalline Y Ba{sub 2}Cu{sub 3}O{sub 7-x}: Self-field and grain size dependence."
IAEA.
@misc{etde_10118660,
title = {Critical currents in polycrystalline Y Ba{sub 2}Cu{sub 3}O{sub 7-x}: Self-field and grain size dependence}
author = {Babic, E, Prester, M, Dobrac, D, Marohnic, Z, Bernik, S, Nazar, P, Stastny, P, and Matacotta, F C}
abstractNote = {The variation of critical currents (I{sub c}) and their distributions (CCD) with thickness (t) has been investigated for two high quality YBa{sub 2}Cu{sub 3}O{sub 7-x} samples with different average grain size (AG{approx_equal}10 and 30 {mu}m for samples S{sub 1} and S{sub 2} respectively) in the temperature range 78-90K and in the applied magnetic field H<50 0e. The critical current density (J{sub c}) for S{sub 1} initially increased but later on leveled off on reducing the thickness, whereas for S{sub 2} remained essentially unchanged even after three-fold reduction in thickness. Since the other parameters related to macroscopic homogeneity have not changed on reducing the thickness of the samples, the variations of J{sub c} are interpreted in terms of thickness and grain size dependent self-field effects. The same model explains well the changes of CCD curves with thickness and may also explain the variation of J{sub c} with the grain size, as reported recently for ceramic YBaCuO samples. (author). 18 refs, 7 figs, 2 tabs.}
place = {IAEA}
year = {1991}
month = {Oct}
}
title = {Critical currents in polycrystalline Y Ba{sub 2}Cu{sub 3}O{sub 7-x}: Self-field and grain size dependence}
author = {Babic, E, Prester, M, Dobrac, D, Marohnic, Z, Bernik, S, Nazar, P, Stastny, P, and Matacotta, F C}
abstractNote = {The variation of critical currents (I{sub c}) and their distributions (CCD) with thickness (t) has been investigated for two high quality YBa{sub 2}Cu{sub 3}O{sub 7-x} samples with different average grain size (AG{approx_equal}10 and 30 {mu}m for samples S{sub 1} and S{sub 2} respectively) in the temperature range 78-90K and in the applied magnetic field H<50 0e. The critical current density (J{sub c}) for S{sub 1} initially increased but later on leveled off on reducing the thickness, whereas for S{sub 2} remained essentially unchanged even after three-fold reduction in thickness. Since the other parameters related to macroscopic homogeneity have not changed on reducing the thickness of the samples, the variations of J{sub c} are interpreted in terms of thickness and grain size dependent self-field effects. The same model explains well the changes of CCD curves with thickness and may also explain the variation of J{sub c} with the grain size, as reported recently for ceramic YBaCuO samples. (author). 18 refs, 7 figs, 2 tabs.}
place = {IAEA}
year = {1991}
month = {Oct}
}