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Low-temperature dielectric properties of candidate substrates for high-temperature superconductors: LaAlO sub 3 and ZrO sub 2 : 9. 5 mol % Y sub 2 O sub 3

Journal Article · · Journal of Applied Physics; (USA)
DOI:https://doi.org/10.1063/1.346211· OSTI ID:6290350
 [1]
  1. Sandia National Laboratories, Albuquerque, New Mexico 87185 (USA)
The effects of temperature (4--400 K), hydrostatic pressure and frequency on the dielectric constant, {epsilon}{prime}, and dielectric loss of single crystals of LaAlO{sub 3} and cubic yttria(9.5 mol %)-stabilized zirconia (ZrO{sub 2}) were investigated. Both crystals are relatively low-loss, low-dispersion dielectrics in the temperature range ({ital T}{lt}150 K) of most interest for high-temperature superconductors. The pressure results make it possible to evaluate the various contributions to the temperature dependence of {epsilon}{prime}. It is found that this dependence is dominated by the change of polarizability with volume. The dielectric properties of the two crystals are compared with those of other candidate substrate materials.
DOE Contract Number:
AC04-76DP00789
OSTI ID:
6290350
Journal Information:
Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 68:8; ISSN 0021-8979; ISSN JAPIA
Country of Publication:
United States
Language:
English