TY - JOUR
KW - Deposition
KW - Superconducting films
KW - Substrates
KW - Polarization
KW - Epitaxial growth
KW - Ferroelectricity
KW - High temperature superconductors
KW - Heterojunctions
KW - Interfaces (materials)
KW - Electric field effects
KW - X-ray diffraction analysis
KW - Superconducting transition temperature
KW - Critical currents
KW - Ferroelectric field effects
AU - Z.W Dong
AU - Z Trajanovic
AU - T Boettcher
AU - I Takeuchi
AU - V Talyansky
AU - C.-H Chen
AU - R.P Sharma
AU - Ramamoorthy Ramesh
AU - T Venkatesan
AB - Pt/Pb(Zr0. 5Ti0. 5)O3/YBa2Cu3O7 (Pt/PZT/YBCO) heterostructures were made by pulsed laser deposition on (lOO)SrTiOj or (100) LaSrGaO4 substrates for studies of ferroelectric field effects in high-Tc superconducting thin films. X-ray diffraction data including <t> scans indicated that the PZT layer grew with c-axis orientation epitaxially on top of the YBCO layers. Polarization measurements at room temperature and 77 K showed similar hysteretic loops in the PZT layer. The rémanent polarization field can induce as many as 10 carriers/cm in the bottom superconducting channel at the interface. Both c-axis and in-plane-aligned a-axis-oriented YBCO films typically exhibiting zero resistance transition temperature of   85 K were used as superconducting channels. By polarizing the PZT film a 2 - 5% change in both the channel resistance and the critical current at 77 - 85 K was obtained in 100 nm thick films. Device operation at microsecond speeds was observed. © 1997 IEEE.
BT - IEEE Transactions on Applied Superconductivity
LA - eng
M1 - 2 PART 3
N1 - cited By 5
N2 - Pt/Pb(Zr0. 5Ti0. 5)O3/YBa2Cu3O7 (Pt/PZT/YBCO) heterostructures were made by pulsed laser deposition on (lOO)SrTiOj or (100) LaSrGaO4 substrates for studies of ferroelectric field effects in high-Tc superconducting thin films. X-ray diffraction data including <t> scans indicated that the PZT layer grew with c-axis orientation epitaxially on top of the YBCO layers. Polarization measurements at room temperature and 77 K showed similar hysteretic loops in the PZT layer. The rémanent polarization field can induce as many as 10 carriers/cm in the bottom superconducting channel at the interface. Both c-axis and in-plane-aligned a-axis-oriented YBCO films typically exhibiting zero resistance transition temperature of   85 K were used as superconducting channels. By polarizing the PZT film a 2 - 5% change in both the channel resistance and the critical current at 77 - 85 K was obtained in 100 nm thick films. Device operation at microsecond speeds was observed. © 1997 IEEE.
PY - 1997
SP - 3516
EP - 3519
T2 - IEEE Transactions on Applied Superconductivity
TI - Studies of ferroelectric field effects in Pt/Pb(Zr0. 5Ti0. 5)O3/YBa2Cu3O7 heterostructures
VL - 7
SN - 10518223
ER -