Polarization switching mechanisms and electromechanical properties of La-modified lead zirconate titanate ceramics

The electromechanical properties of (Pb1−xLax)(ZryTi1−y)O3 [PLZT x/y/(1 - y)] have been investigated in the compositional range 0 < x < 0.10 for y = 0.65 (rhombohedral PLZT) and 0 < x < 0.18 for y = 0.40 (tetragonal PLZT). Both field-induced strains (∊-E) associated with polarization switching and piezoelectric responses (d33) were studied. Transmission electron microscopy (TEM) and dielectric investigations were also performed. Room temperature TEM investigations revealed common trends in the domain structure with increasing La content for both PLZT x/65/35 and x/40/60, including a micron-sized domain structure, a subdomain tweed-like structure, and a nanopolar domain state. Changes in the field-induced strains and piezoelectric properties were then related to these microstructural trends. The dominant electromechanical coupling mechanism in the micron-sized domain state was found to be piezoelectricity. However, an electrostrictive coupling became apparent with the appearance of the subdomain tweed-like structures, and became stronger in the nanopolar domain state. It is believed that polarization switching can-occur through 70°or 110°domains, the subdomain tweed-like structure, or nanopolar domains depending on La content.

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Influence of Thermal and Electrical Histories on Domain Structure and Polarization Switching in Potassium-Modified Lead Zirconate Titanate Ceramics

Journal of the American Ceramic Society ◽

10.1111/j.1151-2916.1998.tb02338.x ◽

2005 ◽

Vol 81 (2) ◽

pp. 328-336 ◽

Cited By ~ 31

Author(s):

Qi Tan ◽

Dwight Viehland

Keyword(s):

Domain Structure ◽

Lead Zirconate Titanate ◽

Polarization Switching ◽

Lead Zirconate ◽

Zirconate Titanate ◽

Titanate Ceramics

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Dielectric and electromechanical properties of lead zirconate titanate ceramics containing neodymium ions

Journal of Materials Science Letters ◽

10.1007/bf00729171 ◽

1992 ◽

Vol 11 (6) ◽

pp. 327-329 ◽

Cited By ~ 8

Author(s):

R. P. Tandon ◽

Ved Singh ◽

N. Narayana Swami

Keyword(s):

Lead Zirconate Titanate ◽

Lead Zirconate ◽

Electromechanical Properties ◽

Zirconate Titanate ◽

Titanate Ceramics

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The effect of neodymium oxide on dielectric and electromechanical properties of lead zirconate titanate ceramics

Materials Letters ◽

10.1016/0167-577x(94)90081-7 ◽

1994 ◽

Vol 20 (3-4) ◽

pp. 165-168 ◽

Cited By ~ 5

Author(s):

R.P. Tandon ◽

Ved Singh ◽

Ramadhar Singh ◽

N. Narayana Swami

Keyword(s):

Lead Zirconate Titanate ◽

Neodymium Oxide ◽

Lead Zirconate ◽

Electromechanical Properties ◽

Zirconate Titanate ◽

Titanate Ceramics

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Microstructure and composition of lead-magnesium-niobate ceramics by Transmission Electron Microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100174242 ◽

1990 ◽

Vol 48 (4) ◽

pp. 222-223

Author(s):

S. Yegnasubramanian ◽

H. C. Ling

Keyword(s):

Lead Zirconate Titanate ◽

Bulk Material ◽

Pyrochlore Phase ◽

Lead Zirconate ◽

Lead Magnesium Niobate ◽

Magnesium Niobate ◽

Transmission Electron ◽

Lead Magnesium ◽

Titanate Ceramics

Ceramic dielectrics in the PbO-MgO-Nb2O5 based system, have been extensively investigated for their use in the capacitor industry. Effects of dopants on the dielectric properties of this class of materials have been also studied in detail in the literature. A TEM investigation of a ceramic piezoelectric material, lead zirconate titanate (PZT) sintered with 3 weight% excess of PbO, revealed an amorphous boundary layer showing a higher lead content than the bulk material. A detailed SEM and TEM study of Ca and Nb doped barium titanate ceramics has been reported which unambiguously identifies the different ferroelectric domain boundaries in this class of ceramics. Compositional determination of the pyrochlore phase in a lead magnesium niobate (PMN) ceramic led to a chemical formula of Pb2Nb1.75 Mg0.25O6.62.

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Influence of domain structure on the electromechanical properties of lead zirconate-titanate and metal/sodium-bismuth titanate ferroelectric ceramics

Physics of the Solid State ◽

10.1134/1.1129978 ◽

1997 ◽

Vol 39 (5) ◽

pp. 821-822 ◽

Cited By ~ 3

Author(s):

A. M. Antonenko ◽

A. Yu. Kudzin ◽

M. G. Gavshin

Keyword(s):

Domain Structure ◽

Lead Zirconate Titanate ◽

Bismuth Titanate ◽

Lead Zirconate ◽

Ferroelectric Ceramics ◽

Electromechanical Properties ◽

Sodium Bismuth Titanate ◽

Zirconate Titanate

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Effect of net PbO content on mechanical and electromechanical properties of lead zirconate titanate ceramics

Materials Science and Engineering B ◽

10.1016/s0921-5107(99)00009-4 ◽

1999 ◽

Vol 60 (1) ◽

pp. 46-50 ◽

Cited By ~ 33

Author(s):

Ajai Garg ◽

D.C Agrawal

Keyword(s):

Lead Zirconate Titanate ◽

Lead Zirconate ◽

Electromechanical Properties ◽

Zirconate Titanate ◽

Titanate Ceramics

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Frequency-dependent electromechanical properties for sol-gel deposited ferroelectric lead zirconate titanate thin layers: Thickness and processing effects

Journal of Materials Research ◽

10.1557/jmr.1995.1435 ◽

1995 ◽

Vol 10 (6) ◽

pp. 1435-1440 ◽

Cited By ~ 23

Author(s):

Jie-Fang Li ◽

Dwight Viehland ◽

C.D.E. Lakeman ◽

D.A. Payne

Keyword(s):

Lead Zirconate Titanate ◽

Sol Gel ◽

Polarization Switching ◽

Lead Zirconate ◽

Thin Layers ◽

Piezoelectric Response ◽

Electromechanical Properties ◽

Measurement Frequency ◽

Processing Effects ◽

Hysteresis Characteristics

The electromechanical properties of sol-gel-derived ferroelectric Pb(Zr0.53Ti0.47)O3 (PZT 53/47) thin layers deposited on silicon were determined as a function of field strength, measurement frequency, and total thickness. Both electrically induced strains (∊) and piezoelectric properties (d33) were characterized by interferometry. Dielectric spectroscopy and polarization switching (P-E) measurements were determined for comparative purposes. An asymmetry between forward and the reverse bias conditions in the ∊-E displacements was found for both five-layer deposited and nine-layer deposited structures. However, no asymmetry was observed in the P-E hysteresis characteristics. In addition, the electrically induced strains and the piezoelectric response were found to be dependent on measurement frequency. No significant frequency dependence was observed in the polarization or dielectric responses. The results are discussed in terms of a possible clamping effect on polarization switching.

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Microstructural Evolution under Polarization Switching of Ferroelectric Tin-modified Lead Zirconate Titanate Ceramics

Japanese Journal of Applied Physics ◽

10.1143/jjap.38.3585 ◽

1999 ◽

Vol 38 (Part 1, No. 6A) ◽

pp. 3585-3588 ◽

Cited By ~ 10

Author(s):

Yung-Fu Tsun ◽

Chen-Chia Chou

Keyword(s):

Microstructural Evolution ◽

Lead Zirconate Titanate ◽

Polarization Switching ◽

Lead Zirconate ◽

Zirconate Titanate ◽

Titanate Ceramics

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High Electromechanical Coupling Piezoelectrics - How High Energy Conversion Rate is Possible

MRS Proceedings ◽

10.1557/proc-459-3 ◽

1996 ◽

Vol 459 ◽

Cited By ~ 2

Author(s):

Kenji Uchino

Keyword(s):

Energy Conversion ◽

Lead Zirconate Titanate ◽

Conversion Rate ◽

Electromechanical Coupling ◽

Crystal Form ◽

Lead Zirconate ◽

High Energy ◽

Coupling Factor ◽

Lead Zinc ◽

Titanate Ceramics

ABSTRACTA new category of piezoelectric ceramics with very high electromechanical coupling was discovered in a lead zinc niobate:lead titanate solid solution in a single crystal form. The maximum coupling factor k33 reaches 95%, which corresponds to the energy conversion rate twice as high as the conventional lead zirconate titanate ceramics. This paper reviews the previous studies on superior piezoelectricity in relaxor ferroelectric: lead titanate solid solutions and on the possible mechanisms of this high electromechanical coupling.

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