Intrinsic and Extrinsic Size Effects in Fine‐Grained Morphotropic‐Phase‐Boundary Lead Zirconate Titanate Ceramics

Randall, Clive A.; Kim, Namchul; Kucera, John Paul; Cao, Wenwu; Shrout, Thomas R.

doi:10.1111/j.1151-2916.1998.tb02389.x

Cited by 978 publications

(529 citation statements)

References 21 publications

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“…The particle size was calculated by averaging the data from both methods (see Table 1). In general, the particle size increases with processing temperature, which is in agreement with literature data [18]. However, for the powders which were calcined at higher temperatures, the fraction of smaller particles increases (i.e.…”

Section: Scanning Electron Microscopysupporting

confidence: 81%

“…Though the difference in particle sizes was minimized by the ball milling treatment, a difference still exists (see Table 1). In fully homogenous Nb doped PZT ceramics a 17% loss of d 33 is witnessed when grain size is reduced from 2 µm to 0.5 µm [18], i.e. the range of d 50 of the particles in the present study.…”

Section: Discussionmentioning

confidence: 86%

“…the range of d 50 of the particles in the present study. It is known that the influence of grain size on piezoelectric properties in this size range is larger in sintered ceramics than in powders, as in only ceramics stresses are built up during sintering, which influences the lattice parameters and magnitude of the piezoelectric constants [18,24]. Thus, the effect of calcining temperature on the d 33 coefficient of the particles is a superposition of both phase homogenization and grain size effects, which both lead to higher d 33 with an increase in calcining temperature.…”

Section: Discussionmentioning

confidence: 99%

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The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

2010

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We report on the optimisation of a recently developed high performance 0-3 piezoelectric composite comprising of the piezoelectric Lead Zirconate Titanate (PZT) powder and a liquid crystalline thermosetting matrix polymer (LCT). The matrix polymer is a liquid crystalline polymer comprising of an HBA-HNA backbone with phenylethynyl end-groups. The use of a high performance polymer makes the composite a possible candidate to be used in sensor applications at elevated temperatures. The composite properties were optimised by calcining the PZT powder at different temperatures, prior to mixing the powders into the LCT matrix. The aim is to study the effect of the calcining temperature on the piezoelectric properties of the composite The PZT powders were characterised by X-ray diffraction and scanning electron microscopy. The dielectric constant and piezoelectric charge constant (d 33 ) of the composite samples was measured. It was found that a relationship exists between the calcining temperature of the PZT powder and the piezoelectric properties of the composites. A maximum voltage constant of g 33 =63 mVm/N was obtained for a composite containing 40% (by volume) of PZT powder calcined at 1150°C.

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Section: Scanning Electron Microscopysupporting

confidence: 81%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

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The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

2010

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“…In general, the piezoelectric properties at room temperature decrease consistently with grain size reduction [15][16][17]. The grain size dependence of piezoelectric coefficient (d 33 ) is shown in Fig.…”

Section: Piezoelectric Coefficientmentioning

confidence: 94%

Effect of grain size on dielectric and ferroelectric properties of nanostructured Ba0.8Sr0.2TiO3 ceramics

et al. 2015

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Barium strontium titanate (Ba 0.8 Sr 0.2 TiO 3 , BST) nanocrystalline ceramics have been synthesized by high energy ball milling. As the sintering temperature increases from 1200 ℃ to 1350 ℃, the average grain size of BST ceramics increases from 86 nm to 123 nm. The X-ray diffraction (XRD) studies show that these ceramics are tetragonal. The phase and grain size of the sintered pellets have been estimated from the XRD patterns, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images. The effect of grain size on dielectric and ferroelectric properties is studied. The dielectric and piezoelectric parameters are greatly improved at room temperature with increase in grain size. The Curie transition temperature is found to shift slightly towards higher temperatures as the grain increases from 86 nm to 123 nm. The coercive field decreases and the remnant polarization and spontaneous polarization increase as the grain size of BST nano ceramics increases. These ceramics are promising materials for tunable capacitor device applications.

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“…Experimentally, the hysteresis loops can be measured while a periodical electric field or stress being applied onto the ferroelectrics externally [6][7]. Furthermore, many factors, such as temperature, grain boundaries or phase boundaries, doping, and anisotropy etc., which can affect the hysteretic behaviors of the ferroelectrics, have also been studied extensively [8][9][10][11][12]. Theoretically, most of the recent works have been accomplished in model of hysteresis loops by means of the famous Preisach model.…”

Section: Introductionmentioning

confidence: 99%

Modeling of hysteresis loop and its applications in ferroelectric materials

Zhi

Chen

et al. 2018

Ceramics International

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Abstract. In order to understand the physical hysteresis loops clearly, we constructed a novel model, which is combined with the electric field, the temperature, and the stress as one synthetically parameter. This model revealed the shape of hysteresis loop was determined by few variables in ferroelectric materials: the saturation of polarization, the coercive field, the electric susceptibility and the equivalent field.Comparison with experimental results revealed the model can retrace polarization versus electric field and temperature. As a applications of this model, the calculate formula of energy storage efficiency, the electrocaloric effect, and the P(E,T) function have also been included in this article.

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Intrinsic and Extrinsic Size Effects in Fine‐Grained Morphotropic‐Phase‐Boundary Lead Zirconate Titanate Ceramics

Cited by 978 publications

References 21 publications

The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

The effect of calcining temperature on the properties of 0-3 piezoelectric composites of PZT and a liquid crystalline thermosetting polymer

Effect of grain size on dielectric and ferroelectric properties of nanostructured Ba0.8Sr0.2TiO3 ceramics

Modeling of hysteresis loop and its applications in ferroelectric materials

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