PULSED LASER DEPOSITION OF NOVEL HTS MULTILAYERS FOR PASSIVE AND ACTIVE DEVICE APPLICATIONS

被引：3

作者：

Chrisey, D. B. ^{[1
]}

Horwitz, J. S. ^{[1
]}

Pond, J. M. ^{[1
]}

Carrol, K. R. ^{[1
]}

Lubitz, P. ^{[1
]}

Grabowski, K. S. ^{[1
]}

Leuchtner, R. E. ^{[1
]}

Carosella, C. A. ^{[1
]}

Vittoria, C. V. ^{[2
]}

机构：

[1] Naval Res Lab, Washington, DC 20375 USA

[2] Northeastern Univ, Boston, MA 02115 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233376

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Multilayered structures have been fabricated from binary combinations of the high T-c superconductor YBa2Cu3O7-delta (YBCO) and the ferrite BaFe12O19 (BFO) or the ferroelectric Sr0.5Ba0.5TiO3 (SBT). The combination of YBCO and BFO was found to destroy the superconductivity of the YBCO layer. Vibrating sample magnetometer measurements of the BFO layer still indicated a large uniaxial anisotropy The underlying YBCO layer, of an SBT/YBCO bilayer still had high quality transport properties unaffected by the SBT layer (T-C similar to 91 K, J(c)(77 K) similar to 2x10(6) A/cm(2)). A thin film, normal metal/SBT transmission line, patterned in microstrip, demonstrated a wealth of temperature and electric field dependent dielectric information for the frequency range tested (f <= 3 GHz). At 100 K, the dielectric constant for zero applied field was 250 for frequencies less than 30 MHz; it was similar to 120 for 1 GHz <= f <= 3 GHz, and it varied continuously with frequency between these values. For temperatures between 300 K and 11 K, frequencies less than about 0.5 GHz, and applied fields up to 200 kV/cm, a nearly linear change in field-induced phase difference was produced in the transmission line. Above this frequency the field dependence changed sign and essentially disappeared at similar to 1 GHz.

引用

页码：1528 / 1531

页数：4

共 9 条

[1] PULSED LASER DEPOSITION OF EPITAXIAL BAFE12O19 THIN-FILMS [J].