Influence of the Spark Plasma Sintering temperature on the structure and dielectric properties of BaTi(1-x)ZrxO3 ceramics

Ezealigo, Blessing N.; Orrù, Roberto; Elissalde, Catherine; Debéda, Hélène; Chung, U‐Chan; Maglione, Mario; Cao, Giacomo

doi:10.1016/j.ceramint.2020.09.210

Cited by 10 publications

(2 citation statements)

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“…In comparison with pure PbTiO 3 ceramics reported in the literature or with similar perovskite systems, these values are much smaller [ 23 , 24 ]. This result confirms that for a small electric field of 10 kV/cm, a high Fe content does not favor the obtainment of good piezoelectric properties; this result is in agreement with the results of other piezoelectric study of BaTi( 1-x )Zr x O 3 (BTZ) ceramics [ 25 ]. However, the maximum value of d 31 obtained for the highest density corresponded to the Fe concentration of x = 0.3, making the PbTi 1−x Fe x O 3−δ ceramics suitable candidates for obtaining better piezoelectric performance in the future by tailoring the microstructural properties.…”

Section: Resultssupporting

confidence: 91%

Structural, Magnetic, Dielectric and Piezoelectric Properties of Multiferroic PbTi1−xFexO3−δ Ceramics

et al. 2021

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PbTi1−xFexO3−δ (x = 0, 0.3, 0.5, and 0.7) ceramics were prepared using the classical solid-state reaction method. The investigated system presented properties that were derived from composition, microstructure, and oxygen deficiency. The phase investigations indicated that all of the samples were well crystallized, and the formation of a cubic structure with small traces of impurities was promoted, in addition to a tetragonal structure, as Fe3+ concentration increased. The scanning electron microscopy (SEM) images for PbTi1−xFexO3−δ ceramics revealed microstructures that were inhomogeneous with an intergranular porosity. The dielectric permittivity increased systematically with Fe3+ concentration, increasing up to x = 0.7. A complex impedance analysis revealed the presence of multiple semicircles in the spectra, demonstrating a local electrical inhomogeneity due the different microstructures and amounts of oxygen vacancies distributed within the sample. The increase of the substitution with Fe3+ ions onto Ti4+ sites led to the improvement of the magnetic properties due to the gradual increase in the interactions between Fe3+ ions, which were mediated by the presence of oxygen vacancies. The PbTi1−xFexO3−δ became a multifunctional system with reasonable dielectric, piezoelectric, and magnetic characteristics, making it suitable for application in magnetoelectric devices.

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Section: Resultssupporting

confidence: 91%

Structural, Magnetic, Dielectric and Piezoelectric Properties of Multiferroic PbTi1−xFexO3−δ Ceramics

et al. 2021

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“…[ 15 ] However, more recently several new aspects on the physics of BZT and understanding of its dielectric properties appeared in the literature, which we would like to briefly review and discuss here. It concerns its high‐frequency dielectric properties including MW, THz, and IR properties [ 7,16–18 ] and their first‐principles and molecular dynamics analysis, [ 19–29 ] nonlinear dielectric properties, [ 30 ] comparison with lead‐containing relaxors, [ 31,32 ] and dipolar glasses, [ 33–35 ] more detailed analysis of the close‐to‐BT compositions (0 ≤ x ≤ 0.2), [ 36–50 ] of pure BZ, [ 6,51 ] variously doped BZT, more suitable for potential applications, [ 26,52–57 ] processing and properties of nanograin BZT ceramics, [ 58–62 ] BT–BZ superlattices [ 63,64 ] and new applications of BZT as giant electrocaloric materials [ 65–67 ] and, in the thin‐film form, as energy storage materials. [ 68 ]…”

Section: Introduction Structure Of Bztmentioning

confidence: 99%

Broadband Dielectric, Terahertz, and Infrared Spectroscopy of BaTiO₃–BaZrO₃ Solid Solution: From Proper Ferroelectric over Diffuse and Relaxor Ferroelectrics and Dipolar Glass to Normal Dielectric

Petzelt

Bovtun

Kempa

et al. 2021

Physica Status Solidi (b)

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BaTiO 3 -xBaZrO 3 (BZT-x) solid solution represents the best-studied lead-free relaxor-ferroelectric (shortly relaxor) system with perspectives for piezoelectrics and electric field tunable microwave (MW) applications in a broad composition range. [1,2] Unlike usual lead-containing relaxors, they belong to isovalent solid solutions (Ti 4þ and Zr 4þ ions have the same valence) so that the quenched random electric fields, which play an important role in lead-containing relaxors, [3] are here not dominant. On increasing the Zr concentration x, it first undergoes the three first-order ferroelectric (FE) phase transitions (PTs) wellknown for barium titanate BaTiO 3 (BT), the best-known FE material. At T C % 400 K, BT undergoes predominantly displacive PT from the paraelectric cubic (C) perovskite structure to tetragonal (T) FE phase, near 270 K from T to orthorhombic (O) FE and near 180 K to rhombohedral (R) FE phase; for the general review and dielectric properties, see the studies by Lines and Petzelt [4,5] and references therein. For x % 0.11, the PTs merge into one diffuse FE transition and the behavior gradually changes into relaxor and finally dipolar glass one. BaZrO 3 (BZ) is a normal (slightly incipient FE) dielectric without any appreciable dielectric dispersion below the infrared (IR) phonon response. [6,7] Broadband dielectric spectroscopies up to terahertz (THz) and IR ranges are the most efficient experimental techniques for studying and understanding such rich properties. Namely, displacive proper FEs are characterized by an excitation whose frequency tends to zero on approaching the FE PT, socalled soft mode (SM), see the recent review [8] and references therein. Due to rather strong lattice anharmonicity (as is the case of BT), another overdamped excitation frequently appears below the SM frequency, so-called central mode (CM), which through mutual coupling takes over the SM softening close to T C . [8] Relaxor FEs (shortly relaxors) exhibit an additional relaxational (overdamped) excitation which appears below the SM-CM frequencies on cooling below so-called Burns temperature T B and characterizes the dynamics of the appearing polar nanoregions (PNRs), see the previous reviews [8,9] and references therein. This excitation softens typically from the MW range down to zero at so-called freezing temperature T f and creates the well-known frequency-dependent maximum T m > T f in the temperature dependence of the dielectric permittivity. Dipolar

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Piezoelectric and dielectric properties of phase-re-engineered barium titanate prepared by self-propagating high-temperature synthesis

Ezealigo¹,

Ezema²

2023

Surface Modification and Functionalization of Ceramic Composites

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Influence of the Spark Plasma Sintering temperature on the structure and dielectric properties of BaTi(1-x)ZrxO3 ceramics

Cited by 10 publications

References 48 publications

Structural, Magnetic, Dielectric and Piezoelectric Properties of Multiferroic PbTi1−xFexO3−δ Ceramics

Structural, Magnetic, Dielectric and Piezoelectric Properties of Multiferroic PbTi1−xFexO3−δ Ceramics

Broadband Dielectric, Terahertz, and Infrared Spectroscopy of BaTiO₃–BaZrO₃ Solid Solution: From Proper Ferroelectric over Diffuse and Relaxor Ferroelectrics and Dipolar Glass to Normal Dielectric

Piezoelectric and dielectric properties of phase-re-engineered barium titanate prepared by self-propagating high-temperature synthesis

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Influence of the Spark Plasma Sintering temperature on the structure and dielectric properties of BaTi(1-x)ZrxO3 ceramics

Cited by 10 publications

References 48 publications

Structural, Magnetic, Dielectric and Piezoelectric Properties of Multiferroic PbTi1−xFexO3−δ Ceramics

Structural, Magnetic, Dielectric and Piezoelectric Properties of Multiferroic PbTi1−xFexO3−δ Ceramics

Broadband Dielectric, Terahertz, and Infrared Spectroscopy of BaTiO3–BaZrO3 Solid Solution: From Proper Ferroelectric over Diffuse and Relaxor Ferroelectrics and Dipolar Glass to Normal Dielectric

Piezoelectric and dielectric properties of phase-re-engineered barium titanate prepared by self-propagating high-temperature synthesis

Contact Info

Product

Resources

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Broadband Dielectric, Terahertz, and Infrared Spectroscopy of BaTiO₃–BaZrO₃ Solid Solution: From Proper Ferroelectric over Diffuse and Relaxor Ferroelectrics and Dipolar Glass to Normal Dielectric