Peculiarities of Ferro-Antiferroelectric Phase Transitions 8. Long-Time Relaxation Processes

Ishchuk, V. M.; Samoilenko, Z. A.; Sobolev, V. L.

doi:10.1080/00150190802523545

Cited by 8 publications

(21 citation statements)

References 34 publications

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“…A small number of experiments on establishment of dependency τ (t) has been done up to now. We will use the results of investigation of the long-time relaxation [8,9]. The process of formation of segregates along the IDWs takes place during more than 30 hours.…”

Section: Downloaded By [Akdeniz Universitesi] At 20:05 25 December 2014mentioning

confidence: 99%

Peculiarities of Ferro-Antiferroelectric Phase Transitions 9. Can the Substances with Coexisting Ferroelectric and Antiferroelectric Phases Mimic the Dipole-Glass Behavior?

Ishchuk¹,

Sobolev

2011

Ferroelectrics

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We demonstrate that the substances with coexisting ferroelectric and antiferroelectric phases possess properties characteristic for the "dipole glasses". Possible phase diagrams of such substances are discussed. Main attention is paid to the long-time relaxation of physical characteristics of these compounds after their thermodynamic equilibrium was disturbed by external influences. The long-time relaxation and the pronounced frequency dependence of parameters (for example, dependence of characteristics on the frequency of measuring field) are the main features due to which these systems are classified as dipole glasses. Our main purpose is to call attention to the fact that one has to be cautious during the interpretation of experimental results in substances with inhomogeneous states of coexisting domains of ferroelectric and antiferroelectric phases.

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Section: Downloaded By [Akdeniz Universitesi] At 20:05 25 December 2014mentioning

confidence: 99%

Peculiarities of Ferro-Antiferroelectric Phase Transitions 9. Can the Substances with Coexisting Ferroelectric and Antiferroelectric Phases Mimic the Dipole-Glass Behavior?

Ishchuk¹,

Sobolev

2011

Ferroelectrics

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“…The decomposition of the sold solution takes place on the boundaries that separate the domains of FE and AFE phases. [12][13][14] Such boundaries (or segregates) possess the metallic type of conductivity.…”

Section: Introductionmentioning

confidence: 99%

Local decomposition of solid solutions, nanostructures and optical materials with negative refractive index

Ishchuk

Sobolev

2016

Mod. Phys. Lett. B

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In this paper, a possibility of use of the controlled decomposition of solid solutions of oxides with perovskite structure in the state of coexisting domains of the antiferroelectric (AFE) and ferroelectric (FE) phases for manufacturing materials with the negative refractive index is demonstrated. The lead zirconate titanate-based solid solutions are considered as an example of substances suitable for creation of such materials. Manufactured composites constitute a dielectric AFE matrix with a structure of conducting interphase boundaries separating domains of the FE and AFE phases. The electric conductivity of the interphase boundaries occurs as a result of the local decomposition of the solid solutions in the vicinity of these boundaries. The decomposition process and consequently the conductivity of the interphase boundaries can be controlled by means of external influences.

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“…Such local decomposition of the solid solution in the vicinity of CIPB in the PZT-based solid solutions has been detected and studied in detail. [9][10][11][12] X-ray and neutron diffraction investigations of the crystal structure of PZT solid solutions from the MPB region of compositions represent the larger group of published studies. These studies are based on the analysis of the profiles of lines of the diffraction pattern due to the elastic scattering of incident radiation.…”

Section: Introductionmentioning

confidence: 99%

“…There were no discontinuities of crystal plains (we have seen it using TEM) and the boundaries had a coherent character without dislocations and the concentration of the elastic stress. A high degree of the homogeneity of samples has allowed us to study the kinetics of development of segregates in the vicinity of CIPBs 10,11,16 along with the physical effects caused by these CIPBs.…”

Section: Introductionmentioning

confidence: 99%

“…It is difficult to elicit directly such-like segregates with the AFE state in the PZT solid solutions at present. It has been done for the PZT-based solid solutions with compositions from the ferroelectricantiferroelectric morphotropic region of the \composition-temperature" phase diagram 9,11,12,15,16,20 (where the sizes of segregates were of the order of several tens of nanometer). In addition to that, several recently appeared publications pointed out the possibility of existence of the AFE ordering in the PZT solid solutions with compositions from the MPB region (the region between the tetragonal and rhombohedral phases) of the phase diagram.…”

Section: Introductionmentioning

confidence: 99%

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Effects caused by antiferroelectric nanodomains in PZT-based coarse-grained ceramics with compositions from the morphotropic boundary region

2017

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Presented results demonstrate importance of taking into account such a phenomenon as the solid solution decomposition at the boundaries separating coexisting phases in lead zirconate-titanate-based solid solutions with compositions belonging to the morphotropic boundary region of the \temperature-composition" phase diagram. It is shown that in the local decomposition of solid solutions in the vicinity of the boundaries separating the tetragonal and rhombohedral phases in lead zirconate-titanate-based solid solutions lead to the changes of the solid solution's chemical composition and to the formation of segregates. It is also shown that the proper thermoelectric treatment of samples containing these segregates can give substantially higher values of piezoelectric parameters in the lead zirconate-titanate-based compounds.

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Peculiarities of Ferro-Antiferroelectric Phase Transitions 8. Long-Time Relaxation Processes

Cited by 8 publications

References 34 publications

Peculiarities of Ferro-Antiferroelectric Phase Transitions 9. Can the Substances with Coexisting Ferroelectric and Antiferroelectric Phases Mimic the Dipole-Glass Behavior?

Peculiarities of Ferro-Antiferroelectric Phase Transitions 9. Can the Substances with Coexisting Ferroelectric and Antiferroelectric Phases Mimic the Dipole-Glass Behavior?

Local decomposition of solid solutions, nanostructures and optical materials with negative refractive index

Effects caused by antiferroelectric nanodomains in PZT-based coarse-grained ceramics with compositions from the morphotropic boundary region

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