Relaxor Behavior, Polarization Buildup, and Switching in Nanostructured 0.92 PbZn1/3Nb2/3O3–0.08 PbTiO3 Ceramics

Algueró, Miguel; Hungrı́a, Teresa; Amorín, Harvey; Ricote, J.; Galy, Jean; Castro, A.

doi:10.1002/smll.200700284

Cited by 27 publications

(27 citation statements)

References 37 publications

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“…Analogously, in the mixed relaxor ceramic Pb(Zn,Nb)O 3 -PbTiO 3 system, the ferroelectric to relaxor transition disappears for small crystallite sizes of 20 nm. [165] Magnetic nanostructured bulk cobalt-iron spinel, CoFe 2 O 4 , was successfully fabricated by Imine et al [166] with an average crystallite size of only 11 nm and a relative density of >92%, and superparamagnetic behavior was demonstrated for those samples. Magnetic nanostructured bulk Ni-Zn ferrites were synthesized by Valenzuela et al [167] Their samples had a relative density between 92 and 94% and an average crystallite size around 60 nm.…”

Section: Nanostructured Materialsmentioning

confidence: 99%

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

et al. 2014

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Field-assisted sintering technology/Spark plasma sintering is a low voltage, direct current (DC) pulsed current activated, pressure-assisted sintering, and synthesis technique, which has been widely applied for materials processing in the recent years. After a description of its working principles and historical background, mechanical, thermal, electrical effects in FAST/SPS are presented along with the role of atmosphere. A selection of successful materials development including refractory materials, nanocrystalline functional ceramics, graded, and non-equilibrium materials is then discussed. Finally, technological aspects (advanced tool concepts, temperature measurement, finite element simulations) are covered.

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Section: Nanostructured Materialsmentioning

confidence: 99%

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

et al. 2014

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“…[30] SPS has been demonstrated to enable the consolidation of ceramics materials within minutes and the ability to obtain fully dense samples at comparatively low sintering temperatures, typically a few hundred degrees lower than in normal hot pressing. The most commonly compacted materials by this technique are: carbides, for example, SiC, Ti 3 SiC 2 , WC and ZrC; [30][31][32][33][34][35][36][37][38] nitrides, for example Si 3 N and AlN; [39][40][41] oxides, for example, ZrO 2 , [27,28,42] Al 2 O 3 [9,11,43] and several perovskites; [10,[44][45][46][47][48][49] phosphates, for example, Nasicon [50] and Hydroxyapatite; [51,52] metals; [53][54][55][56] intermetallics; [57] and, borides. [58,59] The use of rapid sintering appear to be essential for the fabrication of nanocrystalline ceramics [46,49] and to get special microstructures.…”

Section: Applications Of Spsmentioning

confidence: 99%

“…An electrical polarization can be built up and switched with an electric field in the 0.92Pb(Zn 1/3 Nb 2/ 3 )O 3 -0.08PbTiO 3 nanostructured material. [49] There have been some other results reported on the application of the SPS method to obtain dense ceramics of lead titanatebased high-sensitivity piezoelectric materials. These works deal with Pb 0.97 La 0.02 (Zr 0.77 Sn 0.14 Ti 0.09 )O 3 , [138] P b 0 .…”

Section: High-sensitivity Piezoelectrics Chemically Derived From Pbtiomentioning

confidence: 99%

“…The studies has been focused on the system (l À x)BiScO 3 -xPbTiO 3 (BS-PT) near the morphotropic phase boundary (MPB, near x ¼ 0.64) [155,156] and mainly on the phase 0.92PbZn 1/3 Nb 2/3 O 3 -0.08 PbTiO 3 (also in the MPB) [49,137] where the results of the electrical characterization indicate that the relaxor state does exist in nanostructured PZN-PT materials with a grain size of 15-20 nm. Similar results were obtained in the case of the Pb(Zn 1/3 Nb 2/3 )O 3 -Pb(Fe 1/2 Nb 1/2 )O 3 -PbTiO 3 system.…”

Section: Final Remarks On Nanostructuring Using Spark Plasma Sinteringmentioning

confidence: 99%

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Spark Plasma Sintering as a Useful Technique to the Nanostructuration of Piezo‐Ferroelectric Materials

2009

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“…The electrical properties of the nanostructured material were characterized and relaxor-type behavior was found. 9 In this work, we present results on the dielectric properties of similarly nanostructured materials with decreasing Py content up to its disappearance. This was achieved by adding Pb͑Fe 1/2 Nb 1/2 ͒O 3 ͑PFN͒ to the binary system, which enhanced the stability of the Pe phase.…”

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confidence: 99%

Relaxor behavior in nanostructured Pb(Zn1/3Nb2/3)O3–Pb(Fe1/2Nb1/2)O3–PbTiO3 ceramics

Amorín

Jiménez

Hungrı́a

et al. 2009

Applied Physics Letters

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There is controversy about the persistence or not of the relaxor state in the nanoscale. We report here the dielectric properties of nanostructured ceramics of the Pb͑Zn 1/3 Nb 2/3 ͒O 3 -Pb͑Fe 1/2 Nb 1/2 ͒O 3 -PbTiO 3 ternary system with an average grain size of 20 nm, which clearly indicate that it persists as long as correlations among polar nanoregions are possible across grain boundaries. Two independent Vogel-Fulcher type relaxations are found in the materials that have a non-negligible width of the size distribution, which are proposed to be associated with intra-and intergranular correlations that show freezing at different temperatures. © 2009 American Institute of Physics. ͓DOI: 10.1063/1.3118527͔ Ferroelectric ͑FE͒ nanostructures are attracting a lot of attention from the microelectronic industry due to their potential applications in piezoelectric microelectromechanical systems and also for implementing sensing and actuation in nanoelectromechanical devices. 1 The feasibility of using FE nanostructured polycrystals in these miniaturized devices depends on how the properties scale with the decrease in crystal size. This has raised interest in the processing of ceramics with a nanometric grain size and in studying the effect of the grain size reduction on the macroscopic properties. Particularly, in perovskite ͑Pe͒ relaxor-FE solid solutions with morphotropic phase boundary. 2,3 Pb͑Mg 1/3 Nb 2/3 ͒O 3 -PbTiO 3 ͑PMN-PT͒ is one of these systems, for which an evolution from FE to relaxor-type behavior with decreasing grain size has been described. 2,3 In relaxor PMN, the disappearance of the dielectric relaxation below a critical grain size of 30 nm has been reported. 2,4 Pb͑Zn 1/3 Nb 2/3 ͒O 3 -PbTiO 3 ͑PZN-PT͒ is another example of such systems, which present the highest known piezoelectric coefficients. 5 However, Pe phase powders have only been obtained by high pressure synthesis or by mechanochemical activation. 6 Moreover, the processing of high-quality ceramics has not been accomplished due to the thermal decomposition of the Pe into a pyrochlore ͑Py͒ phase. 6 We recently succeeded in processing nanostructured ceramics of 0.92PZN-0.08PT with an average grain size of 20 nm by spark plasma sintering ͑SPS͒ of a powder obtained by mechanochemical activation. 7 SPS technique allows to obtain dense ceramics at moderate temperatures and short times, thus limiting grain growth. 8 In the case of PZN-PT, this is also advantageous for minimizing Pe thermal decomposition, and ceramics were obtained at 873 K. However, materials presented traces of Py due to the onset of Pe decomposition at 823 K. This prevented the temperature of the SPS to be further increased. The electrical properties of the nanostructured material were characterized and relaxor-type behavior was found. 9 In this work, we present results on the dielectric properties of similarly nanostructured materials with decreasing Py content up to its disappearance. This was achieved by adding Pb͑Fe 1/2 Nb 1/2 ͒O 3 ͑PFN͒ to the binary system, which enhance...

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Relaxor Behavior, Polarization Buildup, and Switching in Nanostructured 0.92 PbZn_1/3Nb_2/3O₃–0.08 PbTiO₃ Ceramics

Cited by 27 publications

References 37 publications

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

Field‐Assisted Sintering Technology/Spark Plasma Sintering: Mechanisms, Materials, and Technology Developments

Spark Plasma Sintering as a Useful Technique to the Nanostructuration of Piezo‐Ferroelectric Materials

Relaxor behavior in nanostructured Pb(Zn1/3Nb2/3)O3–Pb(Fe1/2Nb1/2)O3–PbTiO3 ceramics

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