High‐superconducting critical current densities in YBa2Cu3O7/PrBa2Cu3O7 superlattices
G Jakob, P Przyslupski, C Stölzel, C Tomé‐Rosa… - Applied physics …, 1991 - pubs.aip.org
Well‐ordered [(YBa2Cu3O7) n Y/(PrBa2Cu3O7) n Pr)] m superlattices with high
superconducting critical temperatures were prepared by sequential reactive dc sputtering.
The superconducting critical current density at 4.5 K reaches values as high as 1.1× 107
A/cm2 for a sample with n Y= 2 and n Pr= 1 and 3.8× 106 A/cm2 for n Y= 1 and n Pr= 3,
indicating that the coupling of the CuO2 layers is not necessary for high‐jc values. The
angular dependence jc (φ) is determined by the component of the magnetic field …
superconducting critical temperatures were prepared by sequential reactive dc sputtering.
The superconducting critical current density at 4.5 K reaches values as high as 1.1× 107
A/cm2 for a sample with n Y= 2 and n Pr= 1 and 3.8× 106 A/cm2 for n Y= 1 and n Pr= 3,
indicating that the coupling of the CuO2 layers is not necessary for high‐jc values. The
angular dependence jc (φ) is determined by the component of the magnetic field …