Processing and structure-property relationships for fine grained PZT ceramics

Hackenberger, Wesley S.; Kim, N.; Randall, Clive A.; Cao, Wenping; Shrout, T. R.; Pickrell, David

doi:10.1109/isaf.1996.598172

Cited by 11 publications

(5 citation statements)

References 2 publications

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“…After poling, the piezoelectric properties of the submicron‐structured BS–PT ceramics were further measured, and the obtained d 33 and g 33 values are 220 pC/N and 40 × 10 −3 Vm/N, respectively. In order to highlight the excellent performance of the fine‐grained BS–PT ceramics prepared in this work, the relationship between the piezoelectric properties ( d 33 , g 33 ) and the grain size of some typical lead‐based fine‐grained piezoceramics including our experimental samples is given in Figure A,B, respectively . As can be seen, the piezoelectric properties of the 170 nm sized BS–PT ceramics prepared in this experiment are superior to those reported in the literature in the same grain size range, and even better than some Pb(Zr,Ti)O 3 ‐based ceramics with grain sizes in the micrometer range .…”

Section: Resultsmentioning

confidence: 60%

Building submicron crystalline piezoceramics: One‐step pressureless sintering partially amorphized nanopowder

et al. 2018

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The key to miniaturization of piezoelectric devices is to build high-performance fine-grained piezoceramics. Although the preparation of fine-grained ceramics can be achieved by hot press sintering or spark plasma sintering, complex processes, and high costs hinder the popularization of such technologies. In this work, a onestep conventional pressureless sintering technique based on partially amorphized nano-precursors has been proposed for low-cost preparation of submicron-structured ceramics. Using this technology, 0.36BiScO 3 -0.64PbTiO 3 ceramics with an average particle size of 170 nm and a relative density of 95% can be prepared at temperature as low as 900°C, while the samples still have excellent piezoelectric properties (d 33 = 220 pC/N, g 33 = 40 × 10 −3 Vm/N). In the process of sintering partially amorphized nano-precursors, the initial densification rate is faster than the grain growth rate, which can be attributed to two effects promoting low temperature densification, one is the liquid phase sintering mechanism associated with the amorphous phase, and the other is the filling effect of small particles deposited at the grain boundaries. This work is simple and easy to implement, and it is expected to be extended to the preparation of other types of fine-grained ceramics.

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Section: Resultsmentioning

confidence: 60%

Building submicron crystalline piezoceramics: One‐step pressureless sintering partially amorphized nanopowder

et al. 2018

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“…In case of array transducers, the width of such an element, operating in bar or element mode, should be on the order of 15 μm or less to avoid an unwanted lateral resonance. Recent developments on fine grain materials have proven to be superior in dicing operations [57], and retain their bulk material properties better at higher frequencies than their larger grain counterparts [53,58]. …”

Section: Materials For High Frequency Ultrasonic Transducersmentioning

confidence: 99%

Piezoelectric films for high frequency ultrasonic transducers in biomedical applications

Zhou

Lau

et al. 2011

Progress in Materials Science

304

205

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Piezoelectric films have recently attracted considerable attention in the development of various sensor and actuator devices such as nonvolatile memories, tunable microwave circuits and ultrasound transducers. In this paper, an overview of the state of art in piezoelectric films for high frequency transducer applications is presented. Firstly, the basic principles of piezoelectric materials and design considerations for ultrasound transducers will be introduced. Following the review, the current status of the piezoelectric films and recent progress in the development of high frequency ultrasonic transducers will be discussed. Then details for preparation and structure of the materials derived from piezoelectric thick film technologies will be described. Both chemical and physical methods are included in the discussion, namely, the sol–gel approach, aerosol technology and hydrothermal method. The electric and piezoelectric properties of the piezoelectric films, which are very important for transducer applications, such as permittivity and electromechanical coupling factor, are also addressed. Finally, the recent developments in the high frequency transducers and arrays with piezoelectric ZnO and PZT thick film using MEMS technology are presented. In addition, current problems and further direction of the piezoelectric films for very high frequency ultrasound application (up to GHz) are also discussed.

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“…The effects of microstructure are simulated for grain sizes above 0.7 μm. At and below this grain size, available experimental evidence suggests that the tetragonal structure is suppressed by the mechanical interlocking of the grains 8–12 . Finally, the material properties are assumed to be homogenous within each two‐dimensional grain, up to an infinitely thin boundary.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Texture and Microstructure on the Macroscopic Properties of Polycrystalline Piezoelectrics: Application to Barium Titanate and PZN–PT

Garcı́a

Carter

Langer

2005

Journal of the American Ceramic Society

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The effects of crystallographic texture and microstructure are analyzed for polycrystalline tetragonal BaTiO 3 , pseudotetragonal PZN-PT, and cubic BaTiO 3 . For tetragonal BaTiO 3 and pseudotetragonal PZN-PT, we demonstrate that a high anisotropy of the single-crystal properties induces an apparent enhancement in the macroscopic piezoelectric response. For tetragonal BaTiO 3 , the predicted macroscopic piezoelectric constants d 31 and d 33 are enhanced with respect to its single-crystal value at the expense of the spatial contributions from d 15 . For samples possessing fiber texture, an optimal response is predicted for samples that are not perfectly textured. Similarly, an apparent enhancement of the macroscopic value of d 15 is predicted for PZN-PT. For cubic BaTiO 3 , the low anisotropy of the underlying crystal properties induces a uniform decrease of the macroscopic electrostrictive constant, Q 11 , with decreasing texture. A completely random polycrystal provides 0.8570.05 times its single-crystal response. J ournal

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Processing and structure-property relationships for fine grained PZT ceramics

Cited by 11 publications

References 2 publications

Building submicron crystalline piezoceramics: One‐step pressureless sintering partially amorphized nanopowder

Building submicron crystalline piezoceramics: One‐step pressureless sintering partially amorphized nanopowder

Piezoelectric films for high frequency ultrasonic transducers in biomedical applications

The Effect of Texture and Microstructure on the Macroscopic Properties of Polycrystalline Piezoelectrics: Application to Barium Titanate and PZN–PT

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