Development of PZT powders by wet chemical method and fabrication of multilayered stacks/actuators

Sahoo, Bijaylaxmi; Jaleel, VA; Panda, P. K.

doi:10.1016/j.mseb.2005.09.045

Cited by 43 publications

(18 citation statements)

References 27 publications

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“…Variations of Δx= 0.04 on both sides of the MPB have been reported to lead to a loss in d 33 of as much as 50% [20]. In PZT powder calcined at low temperatures, the phase fractions with a composition away from the MPB do not contribute much to the piezoelectric activity of the PZT [21]. In this work, compositional deviations from the MPB of much more than Δx=0.04 are present in low temperature calcined powders (see Fig.…”

Section: Discussionmentioning

confidence: 58%

“…The effect of phase composition distribution changes is analogous to the influence of phase composition of the PZT on the piezoelectric properties in the bulk ceramic [20,21] and homogenisation will lead to an increase in particle d 33 . From (undoped) bulk PZT, it is known that the dielectric and piezoelectric constants of PZT increase near the morphotropic phase boundary (MPB).…”

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: Discussionmentioning

confidence: 58%

Section: Discussionmentioning

confidence: 99%

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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“…Because of their excellent piezoelectric property, lead (Pb) based piezoelectric materials, such as lead zirconate titanate (PZT), is one of the most widely exploited and extensively used piezoelectric materials [5,6]. However, Pb-based piezoelectric materials have a critical disadvantage for their Pb content is higher than 60% by weight.…”

Section: Introductionmentioning

confidence: 99%

Giant piezoresponse and promising application of environmental friendly small-ion-doped ZnO

Pan

Luo

Yang

et al. 2011

Sci. China Technol. Sci.

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In recent years, with the growing concerns on environmental protection and human health, new materials, such as lead-free piezoelectric materials, have received increasing attention. So far, three types of lead-free piezoelectric systems have been widely researched, i.e., perovskites, bismuth layer-structured ferroelectrics, and tungsten-bronze type ferroelectrics. This article presents a new type of environmental friendly piezoelectric material with simple structure, the transition-metal(TM)-doped ZnO. Through substituting Zn 2+ site with small size ion, we obtained a series of TM-doped ZnO with giant piezoresponse, such as Zn 0.975 V 0.025 O of 170 pC/N, Zn 0.94 Cr 0.06 O of 120 pC/N, Zn 0.913 Mn 0.087 O of 86 pC/N and Zn 0.988 Fe 0.012 O of 127 pC/N. The tremendous piezoresponses are ascribed to the introduction of switchable spontaneous polarization and high permittivity in TM-doped ZnO.The microscopic origin of giant piezoresponse is also discussed. Substitution of TM ion with small ionic size for Zn 2+ results in the easier rotation of noncollinear TM-O1 bonds along the c axis under the applied field, which produces large piezoelectric displacement and corresponding piezoresponse enhancement. Furthermore, it proposes a general rule to guide the design of new wurtzite semiconductors with enhanced piezoresponses. That is, TM-dopant with ionic size smaller than Zn 2+ substitutes for Zn 2+ site will increase the piezoresponse of ZnO significantly. Finally, we discuss the improved performances of some TM-doped ZnO based piezoelectric devices.

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“…PZT powders corresponding to compositions Pb 1x (La x or Nd x )(Zr 0.53 Ti 0.47 )O 3 , where x = 0, 0.01, 0.02, 0.03, 0.04, 0.06 or 0.08 mol, were prepared by wet-chemical method using salt solution as precursor [18,19]. To compensate PbO loss during calcination and sintering, 3 wt% excess lead solution was added.…”

Section: Preparation Of Powdersmentioning

confidence: 99%

Effect of lanthanum, neodymium on piezoelectric, dielectric and ferroelectric properties of PZT

Sahoo

Panda

2013

J Adv Ceram

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Abstract:The effect of La 3+ and Nd 3+ on piezoelectric, dielectric and ferroelectric properties of PZT (Pb(Zr 0.53 Ti 0.47 )O 3 ) was studied. The powders were prepared by "wet-chemical" route followed by calcination at 800 ℃ for 4 h. XRD analysis of the calcined powders confirms the tetragonal phase in the undoped PZT, which gradually decreases with the dopant concentration and the appearance of rhombohedral phase simultaneously. SEM study of sintered pellets reveals the decrease in grain size with the increase in dopant concentration beyond 0.02 mol Nd 3+ and 0.03 mol La 3+ respectively. The piezoelectric constant (d 33 ) and dielectric properties were maximum for 0.02 mol Nd 3+ and 0.03 mol La 3+ respectively. The remnant polarization of La 3+ -doped sample was higher than Nd 3+ -doped sample, and the sample with combined dopants shows intermediate remnant polarization (P r ). Based on the above study, it is concluded that La 3+ is more effective than Nd 3+ , including in a mixture of La 3+ and Nd 3+ dopants.

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Development of PZT powders by wet chemical method and fabrication of multilayered stacks/actuators

Cited by 43 publications

References 27 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

Giant piezoresponse and promising application of environmental friendly small-ion-doped ZnO

Effect of lanthanum, neodymium on piezoelectric, dielectric and ferroelectric properties of PZT

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