Structure and polarization in epitaxial ferroelectric PbZr0.52Ti0.48O3/YBa2Cu 3O7-x/Nd:YAlO3 thin films

A. M. Grishin; M. Yamazato; Y. Yamagata; K. Ebihara

doi:10.1063/1.120824

Structure and polarization in epitaxial ferroelectric PbZr_0.52Ti_0.48O₃/YBa₂Cu ₃O_7-x/Nd:YAlO₃ thin films

A. M. Grishin, M. Yamazato, Y. Yamagata, K. Ebihara

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

We fabricate epitaxial PbZr_0.52Ti_0.48O₃/YBa₂Cu ₃O_7-x submicron film ferroelectric/superconductor heterostructures on the single-crystal YAlO₃+1%Nd₂O₃ substrate by the pulsed laser deposition technique. Frequency independent low loss tanδ=0.04 and dielectric constant of 950, high electric resistivity ρ (150kV/cm)=6×10¹¹cm, remnant polarization of 32μC/cm², no visible fatigue after 10⁷ short bipolar pulses switching indicate excellent electrical performance of the new capacitor structure. The slight crystallite polar axis misalignment and depolarizing effect were found to be responsible for the shape of the apparent polarization loop. The only fitting parameter depolarizing coefficient N=2.37×10^-4 gives the best fit between theory and experimental data and corresponds to prolate ellipsoidal shaped crystallites with the length-to-diameter ratio of 140.

Original language	English
Pages (from-to)	620-622
Number of pages	3
Journal	Applied Physics Letters
Volume	72
Issue number	5
DOIs	https://doi.org/10.1063/1.120824
Publication status	Published - 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.120824

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title = "Structure and polarization in epitaxial ferroelectric PbZr0.52Ti0.48O3/YBa2Cu 3O7-x/Nd:YAlO3 thin films",

abstract = "We fabricate epitaxial PbZr0.52Ti0.48O3/YBa2Cu 3O7-x submicron film ferroelectric/superconductor heterostructures on the single-crystal YAlO3+1%Nd2O3 substrate by the pulsed laser deposition technique. Frequency independent low loss tanδ=0.04 and dielectric constant of 950, high electric resistivity ρ (150kV/cm)=6×1011cm, remnant polarization of 32μC/cm2, no visible fatigue after 107 short bipolar pulses switching indicate excellent electrical performance of the new capacitor structure. The slight crystallite polar axis misalignment and depolarizing effect were found to be responsible for the shape of the apparent polarization loop. The only fitting parameter depolarizing coefficient N=2.37×10-4 gives the best fit between theory and experimental data and corresponds to prolate ellipsoidal shaped crystallites with the length-to-diameter ratio of 140.",

author = "Grishin, {A. M.} and M. Yamazato and Y. Yamagata and K. Ebihara",

year = "1998",

doi = "10.1063/1.120824",

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T1 - Structure and polarization in epitaxial ferroelectric PbZr0.52Ti0.48O3/YBa2Cu 3O7-x/Nd:YAlO3 thin films

AU - Grishin, A. M.

AU - Yamazato, M.

AU - Yamagata, Y.

AU - Ebihara, K.

PY - 1998

Y1 - 1998

N2 - We fabricate epitaxial PbZr0.52Ti0.48O3/YBa2Cu 3O7-x submicron film ferroelectric/superconductor heterostructures on the single-crystal YAlO3+1%Nd2O3 substrate by the pulsed laser deposition technique. Frequency independent low loss tanδ=0.04 and dielectric constant of 950, high electric resistivity ρ (150kV/cm)=6×1011cm, remnant polarization of 32μC/cm2, no visible fatigue after 107 short bipolar pulses switching indicate excellent electrical performance of the new capacitor structure. The slight crystallite polar axis misalignment and depolarizing effect were found to be responsible for the shape of the apparent polarization loop. The only fitting parameter depolarizing coefficient N=2.37×10-4 gives the best fit between theory and experimental data and corresponds to prolate ellipsoidal shaped crystallites with the length-to-diameter ratio of 140.

AB - We fabricate epitaxial PbZr0.52Ti0.48O3/YBa2Cu 3O7-x submicron film ferroelectric/superconductor heterostructures on the single-crystal YAlO3+1%Nd2O3 substrate by the pulsed laser deposition technique. Frequency independent low loss tanδ=0.04 and dielectric constant of 950, high electric resistivity ρ (150kV/cm)=6×1011cm, remnant polarization of 32μC/cm2, no visible fatigue after 107 short bipolar pulses switching indicate excellent electrical performance of the new capacitor structure. The slight crystallite polar axis misalignment and depolarizing effect were found to be responsible for the shape of the apparent polarization loop. The only fitting parameter depolarizing coefficient N=2.37×10-4 gives the best fit between theory and experimental data and corresponds to prolate ellipsoidal shaped crystallites with the length-to-diameter ratio of 140.

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Structure and polarization in epitaxial ferroelectric PbZr_0.52Ti_0.48O₃/YBa₂Cu ₃O_7-x/Nd:YAlO₃ thin films

Abstract

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