| Autor: |
Brown, R., Pendrick, V., Kalokitis, D., Chai, B. H. T. |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 9/24/1990, Vol. 57 Issue 13, p1351, 3p |
| Abstrakt: |
We have shown that strontium lanthanum aluminate (SrLaAlO4) has considerable potential as a substrate material for high-temperature superconductor (high Tc) microwave applications. Excellent lattice match is obtainable on a 14° tilt from the c axis. The lattice dimensions encourage ab plane epitaxial growth. The thermal expansion was found to be 7.4×10-6 °C-1. Patterned sputtered niobium resonators on SrLaAlO4 exhibit Q values at 5 K comparable to similar niobium resonators on polycrystalline alumina, (Q>=10 000 from 2 to 15 GHz). Deposited YBa2Cu3O7-x (YBCO) films on this substrate show sharp ac susceptibility transitions indicating good homogeneity and ab plane orientation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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