Nanostructures and Long-Time Relaxation Caused by Decomposition at FE-AFE Interphase Boundaries

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

doi:10.1080/00150190490423327

Cited by 6 publications

(14 citation statements)

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“…Peculiarities of the solid solution local decomposition caused by the diffusion processes at relatively low temperatures due to the appearance of mechanical stresses in the vicinity of the interphase boundaries, were observed earlier [20][21][22]. The possibility of such decomposition was reported in [20].…”

Section: And Fig 3 Respectivelymentioning

confidence: 63%

The kinetics of the local compositional changes at the ferroelectric–antiferroelectric interphase boundaries in lead–lanthanum titanate–zirconate solid solutions

Ishchuk¹,

Samoylenko²,

Sobolev³

2006

J. Phys.: Condens. Matter

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The results of the first investigations of the process of local decomposition of lead-lanthanum zirconate-titanate solid solution in the vicinity of the interphase boundaries separating domains of coexisting ferroelectric and antiferroelectric phases are presented. The solid solution with the composition: 6 at% of La, 73 at% of Zr, and 27 at% of Ti is considered. The kinetics of the local decomposition of this solid solution in the process of aging of samples quenched down to room temperature from the paraelectric phase is studied. The mechanisms that define the kinetics of the process of establishment of the equilibrium state of coexisting domains of ferroelectric and antiferroelectric phases are discussed.

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Section: And Fig 3 Respectivelymentioning

confidence: 63%

The kinetics of the local compositional changes at the ferroelectric–antiferroelectric interphase boundaries in lead–lanthanum titanate–zirconate solid solutions

Ishchuk¹,

Samoylenko²,

Sobolev³

2006

J. Phys.: Condens. Matter

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“…Nonetheless, the PLZT and PLLZT solid solutions do differ by the presence of vacancies in the Apositions of the crystal lattice of the PLZT system of solid solutions. There is a peculiarity of the ageing process for the PLLZT system of solid solutions occurring at ageing times of 20-30 h. This peculiarity can be attributed to the accumulation of elastic stress and the subsequent drop in strain [50]. It is not present in the PLZT system.…”

Section: Kinetics Of the Local Decomposition Of Solid Solution In Thementioning

confidence: 99%

“…These inclusions have sizes in the range of 8 to 12 nm with period of arrangement of 0.2 -2.0 μm. The method is based on the process of decomposition of the solid solution in the vicinity of the interphase boundaries between domains of the coexisting ferroelectric (FE) and antiferroelectric (AFE) phases [16,50,51].…”

Section: Materials With Negative Refractive Index For Optical Range Omentioning

confidence: 99%

“…The decomposition of solid solution is manifested in the appearance of weak diffusion lines (halos 1 and 2 in Fig. 3.3, pattern 2) in the X-ray diffraction patterns near the basic diffraction lines characteristic for the perovskite crystal structure of the solid solutions investigated [44,50,51]. Therefore, while studying the kinetics of long-duration relaxation and the formation of mesoscopic structures of segregations, there arises the problem of record of X-ray diffraction patterns in a wide range of the angles  during a short period of time.…”

Section: Kinetics Of the Local Decomposition Of Solid Solution In The...mentioning

confidence: 99%

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Physical Effects in the Vicinity of the Ferroelectric–Antiferroelectric Interface

Ishchuk¹,

Sobolev²

2015

Journal of Surfaces and Interfaces of Materials

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Physical effects caused by the presence of interfaces between the domains of coexisting ferroelectric and antiferroelectric phases in solid solutions with small difference in free energies of the ferroelectric and antiferroelectric states are discussed in this review.There exist a number of solid solutions in which the two-phase state of domains of the coexisting phases may occur under certain conditions. We present here results of investigations of some effects directly caused by the presence of the interfaces between the domains of the coexisting ferroelectric and antiferroelectric phases.The phenomenological model describing the inhomogeneous state of coexisting domains of the ferroelectric and antiferroelectric phases is presented. Experimental studies of such inhomogeneous state are discussed using two systems of the PbZr 1-y Ti y O 3 -based solid solutions.Detailed discussion of the process of local decomposition of solid solutions in the vicinity of ferroelectric-antiferroelectric interphase boundaries and formation of the mesoscopic system of segregates in the vicinity of these interphase boundaries and corresponding experimental results are presented.Results on influence of the system of segregates on dielectric and piezoelectric properties, and also on a dielectric relaxation are presented and discussed. The effects caused by the application of a DC electric field are considered and corresponding experimental results are presented. The experimental results demonstrating the possibility of control of piezoelectric parameters by an external electric field in materials with the antiferroelectric to ferroelectric phase transition via the intermediate state of the coexisting domains of these phases are given.

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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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Nanostructures and Long-Time Relaxation Caused by Decomposition at FE-AFE Interphase Boundaries

Cited by 6 publications

References 0 publications

The kinetics of the local compositional changes at the ferroelectric–antiferroelectric interphase boundaries in lead–lanthanum titanate–zirconate solid solutions

The kinetics of the local compositional changes at the ferroelectric–antiferroelectric interphase boundaries in lead–lanthanum titanate–zirconate solid solutions

Physical Effects in the Vicinity of the Ferroelectric–Antiferroelectric Interface

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

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