Doping effects of Nb additives on the piezoelectric and dielectric properties of PZT ceramics and its application on SAW device

Chu, Sheng−Yuan; Chen, Te-Yi; Tsai, I-Ta; Water, Willem van de

doi:10.1016/j.sna.2004.02.020

Cited by 112 publications

(60 citation statements)

References 20 publications

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“…The largest groups of materials with these properties are materials with a perovskite structure. Generally, perovskite ceramics (the best materials for smart structures, sensors and actuators) are fabricated by solid-state reactions or wet-chemistry methods [7][8][9][10]. The methods are related to high production costs and have serious disadvantages (e.g., hightemperature treatment during the technological process results in coarsening and aggregation of the particles or non-stoichiometric composition or nonperovskite structure of the final materials due to the appearance of the volatile element out-diffusion at high temperature).…”

Section: Introductionmentioning

confidence: 99%

Physical properties of lead-free BaFe1/2Nb1/2O3 ceramics obtained from mechanochemically synthesized powders

et al. 2018

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Modern electronics expect functional materials that are eco-friendly and are obtained with lower energy consumption technological processes. The multiferroic lead-free BaFe 1/2 Nb 1/2 O 3 (BFN) ceramic powder has been prepared by mechanochemical synthesis from simple oxides at room temperature. The development of the synthesis has been monitored by XRD and SEM investigations, after different milling periods. The obtained powders contain large agglomerates built by crystals with an estimated size about 12-20 nm depending on the period of milling. From this powder, the multiferroic BFN ceramic samples have been prepared by uniaxial pressing and subsequent sintering pressureless method. The morphology of the BFN ceramic samples strongly depends on high-energy milling duration. The properties of the ceramic samples have been investigated by dielectric spectroscopy, in broad temperature and frequency ranges. The high-energy milling of the powders has strongly affected the dielectric permittivity and dielectric loss of the BaFe 1/2 Nb 1/2 O 3 ceramic samples. The usage of the mechanochemical synthesis to obtain the multiferroic lead-free BFN materials reduces the required thermal treatment and simultaneously improves the parameters of the BFN ceramics.

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Section: Introductionmentioning

confidence: 99%

Physical properties of lead-free BaFe1/2Nb1/2O3 ceramics obtained from mechanochemically synthesized powders

et al. 2018

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“…The driving force for the piezoelectric energy harvesting is also the energy conversion effect using piezoelectricity. Up to now, the piezoelectric effect, which is an energy conversion phenomena leading to the electrical energy generated by an applied force and a mechanical deformation by an applied electric field, have been extensively utilized to demonstrate various devices, such as transducers [1,2], sensors [3][4][5], actuators [6,7], surface acoustic wave (SAW) devices [8,9], frequency control, etc [10]. In the past decade, piezoelectric energy harvesting technologies have been intensively investigated in various research…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on PZT Based Piezoelectric Energy Harvesting Technologies

et al. 2016

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Abstract:Energy harvesting is the most effective way to respond to the energy shortage and to produce sustainable power sources from the surrounding environment. The energy harvesting technology enables scavenging electrical energy from wasted energy sources, which always exist everywhere, such as in heat, fluids, vibrations, etc. In particular, piezoelectric energy harvesting, which uses a direct energy conversion from vibrations and mechanical deformation to the electrical energy, is a promising technique to supply power sources in unattended electronic devices, wireless sensor nodes, micro-electronic devices, etc., since it has higher energy conversion efficiency and a simple structure. Up to now, various technologies, such as advanced materials, micro-and macro-mechanics, and electric circuit design, have been investigated and emerged to improve performance and conversion efficiency of the piezoelectric energy harvesters. In this paper, we focus on recent progress of piezoelectric energy harvesting technologies based on PbZr x Ti 1´x O 3 (PZT) materials, which have the most outstanding piezoelectric properties. The advanced piezoelectric energy harvesting technologies included materials, fabrications, unique designs, and properties are introduced to understand current technical levels and suggest the future directions of piezoelectric energy harvesting.

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“…Such PZT ceramics with compositions at MPB or near this region are much easier to pole and exhibit improved piezoelectric and dielectric properties compared to their rhombohedral and tetragonal counterparts. MPB based PZT ceramics and its compositionally modified variants with soft and hard dopants have been exploited in many sensor and transducer applications for their high electromechanical properties [6,7]. Jaffe et al, showed the dielectric and piezoelectric properties of PZT ceramics for Zr/Ti ratios ranging from 0.48 to 0.60 [1].…”

Section: Introductionmentioning

confidence: 99%

“…The piezoelectric properties of PZT ceramics are improved by the addition of donor dopants, the popular one being Niobium (Nb) ions, resulting in the formation of Nb-doped PZT (PNZT) ceramics. The Nb 5C ions substitutes for the Zr 4C /Ti 4C ions at B-site and thereby promote domain wall motion in PZT ceramics [7]. Apart from providing superior piezoelectric and dielectric properties, Nb-oxide is also a good sintering aid for PZT-based materials resulting in higher density and smaller grain size with 1 mol % doping in the system [3].…”

Section: Introductionmentioning

confidence: 99%

Structure, dielectric and piezoelectric properties of donor doped PZT ceramics across the phase diagram

et al. 2016

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Doping effects of Nb additives on the piezoelectric and dielectric properties of PZT ceramics and its application on SAW device

Cited by 112 publications

References 20 publications

Physical properties of lead-free BaFe1/2Nb1/2O3 ceramics obtained from mechanochemically synthesized powders

Physical properties of lead-free BaFe1/2Nb1/2O3 ceramics obtained from mechanochemically synthesized powders

Recent Progress on PZT Based Piezoelectric Energy Harvesting Technologies

Structure, dielectric and piezoelectric properties of donor doped PZT ceramics across the phase diagram

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