In situ high rate growth of high temperature superconductor tapes
- Malcom R. Beasley
- Luke S.
- Weizhi
- Tsuyoshi
- Ann F.
- Robert H.
- Malcom R.
- Eric J.
- Richard
In situ high rate growth of YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} superconducting films has been carried out using e-beam deposition. A deposition flux controller is developed to monitor and control the deposition rates using tunable diode laser based atomic absorption. Wide range of temperatures, deposition rates, and oxygen fluxes including atomic and molecular oxygen, as well as ozone, have been explored in order to understand both kinetic and thermodynamic stability. Critical current density above 1 MA/cm{sup 2} has been achieved on SrTiO{sub 3} substrate samples in growth rate up to 75 {angstrom}/sec. Samples prepared on IBAD YSZ/Ni tapes exhibit similar R(T)s and x-ray diffraction patterns. However, critical current densities of the tapes are around kA/cm{sup 2} or lower. The poor critical current density of the tape is attributed to interaction between the YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} film and the YSZ buffer layer.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 975116
- Report Number(s):
- LA-UR-01-0401; LA-UR-01-401; TRN: US201008%%3
- Resource Relation:
- Conference: "Submitted to: Applied Superconductivity Conference proceedings, Sept. 2000."
- Country of Publication:
- United States
- Language:
- English
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