Influence of tensile vs. compressive stress on fatigue of lead zirconate titanate thin films

Aruchamy, Naveen; Schenk, Tony; Kovacova, Veronika; Glinšek, Sebastjan; Defaÿ, E.; Granzow, Torsten

doi:10.1016/j.jeurceramsoc.2021.07.010

Cited by 14 publications

(4 citation statements)

References 61 publications

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“…Aruchamy et al. reported a ratio of 0.79:0.21 for out‐of‐plane to in‐plane (002):(200) peak area for 52/48 PZT on a stiff sapphire substrate for which the PZT film had compressive stress of 100 MPa 37 . This is comparable to the data shown here for PZT on the flexible Pt‐25 substrate, which had calculated compressive stress of 102 MPa and a (002):(200) ratio of 0.816:0.184.…”

Section: Resultsmentioning

confidence: 99%

Thermal stress accommodation in dip cast lead zirconate‐titanate ferroelectric films on flexible substrates

et al. 2022

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Piezoelectric thin films were dip coat deposited onto flexible metal substrates to investigate the dependence of dielectric and ferroelectric properties on the coefficient of thermal expansion mismatch and substrate thickness. The bending stiffness was controlled by the thickness of the substrate. Grazing incidence X‐ray diffraction displayed distinct peak splitting for [Pb0.98▪0.01(Zr0.52Ti0.48)Nb0.02O3] on flexible Pt, Ni, Ag, and stiff Ni substrates, where the out‐of‐plane d‐spacing and integrated peak area for c‐domains were highest with the largest film compressive stress. As expected, lead zirconate titanate (PZT) films on stiff Si were under tensile stress and contained more in‐plane domains. The dielectric permittivity was highest in PZT on stiff Si and lowest for PZT on thick Ni, while remanent polarization displayed the opposite trend, commensurate with the residual stress state as well as the resistance to bending in thick substrates as a strain‐relief mechanism. The irreversible Rayleigh coefficient decreased dramatically upon poling for PZT on flexible substrates compared to PZT on stiff substrates; the αε/εinitial${\alpha _\varepsilon }/{\varepsilon _{initial}}$ ratio was 56% higher in PZT on a flexible Ni substrate relative to a stiff Ni substrate at 100 Hz prior to electrical poling. This investigation distinguishes the impact of substrate flexibility from thermal expansion on ferroelectric domain mobility and provides dip‐coating conditions for high‐quality piezoelectric films on any substrate.

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Section: Resultsmentioning

confidence: 99%

Thermal stress accommodation in dip cast lead zirconate‐titanate ferroelectric films on flexible substrates

et al. 2022

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“…These values are comparable to those reported earlier for PZT on glass. 21,26 Slight deviations can be attributed to the planar nature of the CPW electrodes. The S-parameters 𝑆 11 and 𝑆 21 in the frequency range between 10 MHz and 70 GHz are depicted on the example of the measurements at 305 and 395 K in Figure S2.…”

Section: Resultsmentioning

confidence: 99%

Dielectric relaxations of lead zirconate titanate films up to millimeter‐wave frequencies

et al. 2022

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Modern high-frequency applications critically depend on the availability of data on the dielectric properties of functional materials in the microwave and millimeter-wave range. This paper investigates the dielectric response of polycrystalline lead zirconate titanate (PZT) thin films prepared by solution deposition at frequencies between 10 MHz and 70 GHz and temperatures of 305-395 K by measuring the S-parameters of coplanar waveguides (CPW). The real and imaginary parts of the permittivity of the PZT film are de-coupled from the electrical properties of both the fused silica substrate and the copper electrodes.Two dielectric relaxations are identified: one around 850 MHz, with roomtemperature permittivity dropping from 1080 to 560, and one around 36 GHz, with permittivity dropping below 100, respectively. The low-frequency relaxation shows a shift to lower frequencies with increasing temperature; it is explained by the conventional Arlt model of mechanical shear mode resonance across the film thickness. The high-frequency relaxation, which is practically independent of temperature, is attributed to the response of ferroelectric domain walls.

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“…The XRD peaks align well with the powder diffraction file PDF Card: 01-070-4264 of tetragonal PZT. 38 CDA shows an amorphous structure. The dot-like selected area electron diffraction (SAED) pattern of the coated PZT phases in the hybrid nanofibers can be indexed to the (001), ( 110) and (111) diffractions of the tetragonal PZT, illustrating a single crystal (Fig.…”

Section: Morphology Of Electrospun Hybrid Piezoelectric Filmsmentioning

confidence: 99%

An electrospun cellulose-based nanofiber piezoelectric membrane with enhanced flexibility and pressure sensitivity

Zhang

Meng

et al. 2023

J. Mater. Chem. C

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Influence of tensile vs. compressive stress on fatigue of lead zirconate titanate thin films

Cited by 14 publications

References 61 publications

Thermal stress accommodation in dip cast lead zirconate‐titanate ferroelectric films on flexible substrates

Thermal stress accommodation in dip cast lead zirconate‐titanate ferroelectric films on flexible substrates

Dielectric relaxations of lead zirconate titanate films up to millimeter‐wave frequencies

An electrospun cellulose-based nanofiber piezoelectric membrane with enhanced flexibility and pressure sensitivity

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