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AbstractFerroelectric Pb(Zr,Ti)O3(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 PMSZT thin films, as well as a nonsuperconducting electrode and IR reflector in the IR detector applications. Mn and Sb doping was used to tune the Pb(Zr,Ti)O3transition temperature to a lower value, and to modify the pyroelectric and dielectric properties of the pyroelectric material. The PZT/YBCO and PMSZT/YBCO IR detectors were examined as to their IR photon induced pyroelectric response to the source temperature, detector temperature, and IR wavelength, as well as their high temperature retention behavior. A YBCO air-bridge has been fabricated for lower thermal mass of the heterostructure detector.