(MN,SB) DOPED-PB (ZR,TI)O3 YBA2CU3O7 HETEROSTRUCTURE INFRARED DETECTORS/

Ferroelectric Pb(Zr,Ti)O-3 (PZT) and Mn and Sb-doped PbZrTiO3 (PMSZT) thin films were integrated to high Tc superconducting YB2Cu3O7-x (YBCO ) thin films on LaAlO3 (100) and YSZ/Si (100) substrates by the pulsed laser deposition technique. The YBCO layer in the heterostructure was used as an atomic template for the epitaxial growth of the PZT and PM SZT thin films, as well as a nonsuperconducting electrode and IR refle ctor in the IR detector applications. Mn and Sb doping was used to tun e the Pb(Zr,Ti)O-3 transition temperature to a lower value, and to mod ify the pyroelectric and dielectric properties of the pyroelectric mat erial. The PZT/YBCO and PMSZT/YBCO IR detectors were examined as to th eir IR photon induced pyroelectric response to the source temperature, detector temperature, and IR wavelength, as well as their high temper ature retention behavior. A YBCO air-bridge has been fabricated for lo wer thermal mass of the heterostructure detector.