Phase diagrams of the system of solid solutions Pb1−x(Li½La½)x(Zr1-yTiy)O3O3in the vicinity of the FE-AFE phase boundary

Ishchuk, V. M.; Ivashkova, Natalia; Sobolev, V. L.; Spiridonov, N. A.; Belichenko, O. A.; Klyuchnik, S. V.

doi:10.1080/01411599308207990

Cited by 12 publications

(5 citation statements)

References 2 publications

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“…The procedure of obtaining of the Ti-content -temperature phase diagrams for PLZT and the results of their investigation are described in [4,35,46,47] in greater detail. For PLLZT this procedure is considered in [23,48,49].…”

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

confidence: 99%

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

confidence: 99%

Physical Effects in the Vicinity of the Ferroelectric–Antiferroelectric Interface

Ishchuk¹,

Sobolev²

2015

Journal of Surfaces and Interfaces of Materials

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“…After the action of a DC electric field the region of an induced FE state appears in the Y -T diagram, and the diagram becomes more complicated. 26 We investigated the dependence of the shape of x-ray diffraction lines on temperature in the PE phase ͑at the temperatures TϾT C ͒. The lines ͑222͒ and ͑400͒, which are typical for perovskite crystal structure, were chosen for this purpose.…”

Section: A X-ray Investigations Of Pllzt Solid Solutions In Pe Phasementioning

confidence: 99%

Investigation of two-phase nucleation in paraelectric phase of ferroelectrics with ferroelectric–antiferroelectric–paraelectric triple point

Ishchuk

Sobolev

2002

Journal of Applied Physics

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Articles you may be interested inElectric field induced metastable ferroelectric phase and its behavior in (Pb, La)(Zr, Sn, Ti)O3 antiferroelectric single crystal near morphotropic phase boundary Appl. Phys. Lett.High temperature x-ray diffraction studies on antiferroelectric and ferroelectric phase transitions in ( Pb 1−x Ba x ) ZrO 3 (x=0.05,0.10)Results of investigation of phenomena preceding the phase transition from paraelectric to dipole-ordered phases in Pb 1Ϫx (Li 1/2 La 1/2 ) x (Zr 1Ϫy Ti y )O 3 solid solutions with compositions close to the ferroelectric-antiferroelectric-paraelectric triple point in the Ti-concentration-temperature phase diagram are presented. X-ray diffraction and piezoelectric resonance methods are used for identification of the two-phase ͑antiferroelectric and ferroelectric͒ nuclei at the temperatures above the curie temperature. The relation between the presence of these two-phase nuclei in paraelectric phase of the compound and the diffuseness of the ordering phase transition is noted. The phenomenon of ion segregation at the interdomain boundary separating regions of ferroelectric and antiferroelectric phases and its role in enabling the observation of the piezoelectric resonance are discussed.

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“…It was found that this inhomogeneous state is stable with respect to homogeneous states of each phase. The last circumstance leads to a number of remarkable effects [5][6][7][8]10,15,16 . PLZT solid solutions with La content x ≥ 6% are of significant interest in connection with investigations of the nature of the so-called relaxor state 202122232425 .…”

Section: Introductionmentioning

confidence: 99%

“…The regions of FE and AFE states are separated by a wide crosshatched region (border region) where domains of FE and AFE phases coexist. Such coexistence of phases has been identified by X-ray methods [5][6][7][8] in both PLZT and PLLZT and coexisting domains were directly observed by means of transmission electron microscopy in the PLZT solid solutions 5,26 . The FE phase of both systems of solid solutions is characterized by the rhombohedral type of lattice distortions and the AFE phase possesses tetragonal lattice distortions.…”

Section: Introductionmentioning

confidence: 99%

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Nanostructures formation in ferroelectrics in the process of phase transformation

2014

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This paper contains results of investigations of inhomogeneous states caused by the coexistence of ferroelectric and antiferroelectric phases in lead-zirconate-titanate based solid solutions. The domains of ferroelectric and antiferroelectric phases with sizes of the order of 20 to 30 nm coexist in the bulk of the samples due to a small difference in the free energies of the phases. The coherent character of interphase boundaries leads to the concentration of elastic stresses along these boundaries. Elastic stresses cause the local decomposition of the solid solution due to the circumstance that equivalent positions of the crystal lattice are occupied by ions with different sizes. Larger ions are driven out into domains with larger crystal cell parameters and smaller ions are pushed into domains with smaller parameters of the crystal cell. The sizes of segregates formed in this way are of the order 8 to 15 nm. 77.84.-s, 77.80.Bh, 77.80.Dj IntroductionSolid solutions of complex oxides with perovskite crystal structure have been the focus intense fundamental studies for last forty years due to their importance for a wide variety of applications 12345 . The technological interest arises from the fact that these materials may be prepared with very high values of dielectric, piezoelectric, electrostrictive, and electrooptic constants in wide temperature ranges, finding applications like actuators, nonvolatile and dynamic random access memories, capacitors, microelectromechanic devices, electrooptic modulators, optical switches, etc. Lead lanthanum zirconate titanate (PLZT) solid solutions Pb 1-3x/2 La x (Zr 1-y Ti y )O 3 possess wide intervals of thermodynamic parameters in which the domains of the ferroelectric (FE) and antiferroelectric (AFE) phases coexist due to the small difference in free energies of FE and AFE states. The inhomogeneous state of the coexisting phases was studied by several groups of researchers 5678910111213141516171819 . It was found that this inhomogeneous state is stable with respect to homogeneous states of each phase. The last circumstance leads to a number of remarkable effects 5-8,10,15,16 . PLZT solid solutions with La content x ≥ 6% are of significant interest in connection with investigations of the nature of the so-called relaxor state 202122232425 . In this work the results of studies of inhomogeneous states caused by coexistence of ferroelectric and antiferroelectric phases in lead-zirconate-titanate (PZT) based solid solutions and formation of nanostructures caused by local decomposition of these solid solutions are presented. The following systems of solid solutions were chosen for our studies: PLZT with La-content x = 0.06, and Pb 1-x (La 1/2 L 1/2 ) x (Zr 1-y Ti y )O 3 (PLLZT) with х = 0.10, 0.15. In what follows we are going to use the following symbols for solid solution compositions Х/100-Y/Y, where X and Y show the percentage content of substituting elements. The "composition -temperature" phase diagrams (Y-T phase diagrams) for both systems of solid solutions are similar. T...

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Phase diagrams of the system of solid solutions Pb_1−x(Li_½La_½)_x(Zr_1-yTi_y)O₃O₃in the vicinity of the FE-AFE phase boundary

Cited by 12 publications

References 2 publications

Physical Effects in the Vicinity of the Ferroelectric–Antiferroelectric Interface

Physical Effects in the Vicinity of the Ferroelectric–Antiferroelectric Interface

Investigation of two-phase nucleation in paraelectric phase of ferroelectrics with ferroelectric–antiferroelectric–paraelectric triple point

Nanostructures formation in ferroelectrics in the process of phase transformation

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