Influence of extrinsic contribution on the macroscopic properties of hard and soft lead zirconate titanate ceramics

Ochoa, Diego A.; García, José E.; Pérez, R.; Albareda, A.

doi:10.1109/tuffc.2008.990

Cited by 10 publications

(10 citation statements)

References 10 publications

(22 reference statements)

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“…10,19,20 The qualitative difference between hard and undoped on one and soft samples on the other side has been linked to the higher concentration of oxygen vacancies in the former samples; oxygen vacancies are associated with acceptor dopants and are known to control the mobility of domain walls. 21,22 Our measurements reveal much smaller variation between the hard, soft and undoped samples and weaker temperature dependence at 13.4 GHz than at 100 kHz. This gives further supports to the idea that the low frequency anomalies are indeed related to domain wall motion that becomes suppressed at higher frequencies.…”

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confidence: 68%

Domain wall contributions in Pb(Zr,Ti)O3 ceramics at morphotropic phase boundary: A study of dielectric dispersion

Jin¹,

Porokhonskyy²,

Damjanović³

2010

Applied Physics Letters

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The dielectric properties of undoped, Nb-, and Fe-doped Pb͑Zr, Ti͒O 3 ceramics with composition near morphotropic phase boundary were investigated in the frequency range from 1 MHz to 20.2 GHz at room temperature. Temperature dependences of dielectric permittivity Ј and loss Љ are measured at 100 kHz from 50 to 300 K and around 13.4 GHz from 100 to 300 K. These measurements permit estimation of the upper limit of the intrinsic permittivity and lower limit of the extrinsic contributions to the permittivity as a function of temperature. The extrinsic contributions account for more than 50% of the quasistatic dielectric permittivity in studied samples. © 2010 American Institute of Physics. ͓doi:10.1063/1.3455328͔Ferroelectric ceramics are the most widely used piezoelectric materials. The best properties are found in solid solutions exhibiting the morphotropic phase boundary ͑MPB͒. 1 The processes leading to the enhanced properties in the MPB region are of considerable technological and scientific interest. It is well known that in ferroelectric materials the motion of domain walls accounts for a large part of the experimentally observed piezoelectric and dielectric response. [2][3][4][5][6] In practice, the domain wall contributions are most often controlled by dopants, leading to electromechanically hard or soft materials. 1 In addition to dopants, domain wall contributions are dependent on microstructure and crystal structure of ceramics and, in general, it is found that the density of domain walls, domain structure, domain wall mobility, and the ceramics grain size are inter-related, and all depend on dopant concentration. 7-9 Within such a complex relationship among many parameters that influence properties, it is difficult to separate effects due to individual factors. It is advantageous when intrinsic properties are known either from a theory or direct measurements. This is unfortunately not the case for the most widely used piezoelectric material, Pb͑Zr, Ti͒O 3 ͑PZT͒, where single crystal data are not available and for which intrinsic ͑lattice͒ properties can be obtained only indirectly from the phenomenological LandauGinzburg-Devonshire ͑LGD͒ theory. One approach in separating lattice and domain wall contributions has been to measure properties of ceramics as a function of temperature and compare them with those obtained from the LGD theory. 10 The difference between thus obtained values is taken as an estimate of domain wall contributions. A good agreement between the dielectric properties measured in ceramics at low temperatures where domain walls are assumed to be frozen and values predicted from the LGD theory were taken as an indication that this method works well. 11 However, the recent discovery of a monoclinic phase in the MPB region of PZT ͑Ref. 12͒ has put some doubts in estimates derived from LGD approach based only on tetragonal and rhombohedral phases.Another approach to estimate domain wall and lattice contributions is to examine properties of ferroelectric ceramics as a function of frequenc...

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confidence: 68%

Domain wall contributions in Pb(Zr,Ti)O3 ceramics at morphotropic phase boundary: A study of dielectric dispersion

Jin¹,

Porokhonskyy²,

Damjanović³

2010

Applied Physics Letters

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“…For the un-poled specimens, the real and imaginary dielectric constants increase with increasing ZnO content, achieving the maximum value at x = 1, and then decreasing for x > 1. These increases attribute to the increase of grain size with increasing amounts of ZnO additive, which lead to the increased polarizability (intrinsic contribution) and easily shifting domain wall motion (extrinsic contribution) resulting in both dielectric constant and dielectric loss increase [31][32][33][34][35][36]. For 1 < x < 1.5, the amount of ZnO, exceeding the solid solubility, gradually segregates at the grain boundary to inhibit the grain growth resulting in the decrease of grain size leading to decreasing the dielectric constant and dielectric loss.…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Electrical properties and temperature behavior of ZnO-doped PZT–PMnN modified piezoelectric ceramics and their applications on therapeutic transducers

Tsai

Hong

Shih

et al. 2012

Journal of Alloys and Compounds

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“…6,7 The extrinsic response is mainly due to domain wall motion in piezoceramics, as has been extensively reported. [8][9][10] It is therefore expected that different domain wall dynamics will lead to significant differences in both nonlinear dielectric response (i.e., permittivity as a function of applied electric field amplitude) and ferroelectric response (i.e., P-E hysteresis loop characteristics).…”

Section: Introductionmentioning

confidence: 99%

Evidence of temperature dependent domain wall dynamics in hard lead zirconate titanate piezoceramics

García

Ochoa

Gomis

et al. 2012

Journal of Applied Physics

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Composition and orientation dependence of high electric-field-induced strain in Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals J. Appl. Phys. 112, 126102 (2012) Elastic, dielectric and piezoelectric characterization of single domain PIN-PMN-PT: Mn crystals J. Appl. Phys. 112, 124113 (2012) Scaling the dynamic response and energy harvesting potential of piezoelectric beams Appl. Phys. Lett. 101, 264104 (2012) High piezoelectric performance in a new Bi-based perovskite of (1−x)Bi(Ni1/2Hf1/2)O3−xPbTiO3 J. Appl. Phys. 112, 114120 (2012) The atomic structure of lead-free Ba(Zr0.2Ti0.8)O3-(Ba0.7Ca0.3)TiO3 by using neutron total scattering analysis Appl. Phys. Lett. 101, 242901 (2012) Additional information on J. Appl. Phys. This work presents a study of the domain wall dynamics in Pb(Zr 1Àx Ti x )O 3 (PZT)-based piezoceramics by means of the temperature dependence non-linear dielectric response and hysteresis loop measurements. In soft PZT, non-linear response gradually increases as the temperature is raised. A similar response is displayed by hard PZT at low temperatures. However, rather more complex behavior is detected at temperatures above 200 K. The anomalous response, which is very marked at room temperature, becomes even greater when the electric field is increased. The non-linear dielectric response is analyzed in the framework of the Rayleigh model. The results suggest a clear change in the domain wall dynamics in hard PZT, which is not observed in soft PZT. Observation of the hysteresis loops confirms that a strong effect of domain wall pinning emerges near room temperature. The change in domain wall dynamics appears as the main cause of the dielectric response difference between both kinds of materials at room temperature. V C 2012 American Institute of Physics. [http://dx

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Influence of extrinsic contribution on the macroscopic properties of hard and soft lead zirconate titanate ceramics

Cited by 10 publications

References 10 publications

Domain wall contributions in Pb(Zr,Ti)O3 ceramics at morphotropic phase boundary: A study of dielectric dispersion

Domain wall contributions in Pb(Zr,Ti)O3 ceramics at morphotropic phase boundary: A study of dielectric dispersion

Electrical properties and temperature behavior of ZnO-doped PZT–PMnN modified piezoelectric ceramics and their applications on therapeutic transducers

Evidence of temperature dependent domain wall dynamics in hard lead zirconate titanate piezoceramics

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