Compositional ordering in relaxor ferroelectric 
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: Nearest neighbor approach

Zhang, J.; Liu, Laijun; Bokov, Alexei A.; Zhang, Naming; Wang, Dawei; Ye, Z.-G.; Jia, Chun‐Lin

doi:10.1103/physrevb.103.054201

Cited by 5 publications

(2 citation statements)

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“…In the group of the MFH-and FH-materials, the position of the maximum of ε/ε 0 does not depend on the frequency of the measuring field, which is typical for classical ferroelectrics. All this is undoubtedly related to the specificity of the elemental composition of the FPCM, based, in the case of the FS-materials, on the ferroelectric compounds of the relaxor type PbNb 2/3 Mg 1/3 O 3 , PbNb 2/3 Zn 1/3 O 3 , PbNb 2/3 Ni 1/3 O 3 [15][16][17][18][19][20], and in the case of the FH-and MFH-materials-on the Mncontaining compositions such as PbNb 2/3 Mn 1/3 O 3 , PbW 1/3 Mn 1/2 O 3 , PbSb 2/3 Mn 1/3 O 3, etc. [4].…”

Section: Resultsmentioning

confidence: 99%

The Influence of the Elemental Composition, Crystal Structure, and Grain Structure of the Ferro-Piezoceramics of Various Degrees of the Ferro-Hardness on the Stability of the Polarized State

et al. 2022

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Ferro-piezoceramic materials (FPCM) with different degrees of ferrohardness were fabricated by double solid-phase synthesis followed by the sintering technique using hot pressing method. The X-ray studies carried out in a wide temperature range showed that with increasing temperature, each of the studied FPCM undergoes a series of phase transformations, accompanied by a change in the symmetry of the unit cell. In this case, near the phase transition to the nonpolar cubic phase, in each of the FPCM, the formation of a fuzzy symmetry region is observed, which is characterized by weak distortions and temperature–time instability of the crystal structure. The study of the piezoelectric modulus d33 in the quasi-static regime as a function of temperature made it possible to reveal the different nature of its behavior in materials of various degrees of ferrohardness. It was shown that the conservation of the state in ferrosoft materials above the Curie temperature is associated with the relaxation nature of the change in their properties, the existence of a region of fuzzy symmetry (noncubic phase) in them above the Curie temperature, and increased inertia of the system. The expediency of taking into account the presented results in the development of electromechanical converters based on FPCM of various degrees of ferrohardness, operated under temperature effects, including cyclic ones, was shown.

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Section: Resultsmentioning

confidence: 99%

The Influence of the Elemental Composition, Crystal Structure, and Grain Structure of the Ferro-Piezoceramics of Various Degrees of the Ferro-Hardness on the Stability of the Polarized State

et al. 2022

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“…8,9 Some models have been proposed to explain the nature of local polarizations and the mechanism of relaxor behavior. [10][11][12][13][14][15][16] However, the relationship between the microscopic mechanism and relaxor behavior is challenging due to its high degree of complexity. 4,[16][17][18][19] Recently, re-entrant relaxor behavior has been observed in BiMeO 3 -PbTiO 3 (ref.…”

Section: Introductionmentioning

confidence: 99%

Size and orientation of polar nanoregions characterized by PDF analysis and using a statistical model in a Bi(Mg_1/2Ti_1/2)O₃–PbTiO₃ ferroelectric re-entrant relaxor

Liu,

Chen,

Wang

et al. 2024

J. Mater. Chem. A

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Evolving Differentiated Local Polar Displacement and Relaxor Behavior in Pb(Mg_1/3Nb_2/3)O₃–PbTiO₃ Perovskites

Liu

Sun

et al. 2022

Chem. Mater.

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Lead-based relaxor ferroelectrics feature exceptional dielectric and electromechanical properties. The inherent local structural inhomogeneity remains poorly characterized and impedes the understanding of their unique electrical behavior. Herein, the local structure of a technologically important 0.75Pb(Mg 1/3 Nb 2/3 )O 3 −0.25PbTiO 3 relaxor is studied as a function of temperature, by employing neutron total scattering combined with newly advanced reverse Monte Carlo modeling. The statistical analysis of local cationic polar displacement vectors demonstrates that a prevailing order/disorder feature and strong displacive behavior are observed in Pb and Ti, but both weak components are observed in Nb/Mg. This leads to trifurcated polar behavior across the feature temperatures. Importantly, these distinct cationic polar vectors are correlated and present a microscopic picture, where sporadic correlated orthorhombic polar clusters are embedded in a long-range rhombohedral polar matrix at low temperature. Their fraction extends with increasing temperature, presenting strong ferroelectricity with dielectric relaxation macroscopically. Furthermore, the long-range rhombohedral polar ordering is disrupted by temperature, forming free-oriented polar clusters with reducing electric dipole length, gradually losing their macroscopic polarization, and resulting in a diffuse phase transition behavior. Altogether, this offers a fundamental basis in terms of local polar fluctuations in inferring the nature of the unique properties of relaxor ferroelectrics.

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Compositional ordering in relaxor ferroelectric Pb(BB′)O3 : Nearest neighbor approach

Cited by 5 publications

References 35 publications

The Influence of the Elemental Composition, Crystal Structure, and Grain Structure of the Ferro-Piezoceramics of Various Degrees of the Ferro-Hardness on the Stability of the Polarized State

The Influence of the Elemental Composition, Crystal Structure, and Grain Structure of the Ferro-Piezoceramics of Various Degrees of the Ferro-Hardness on the Stability of the Polarized State

Size and orientation of polar nanoregions characterized by PDF analysis and using a statistical model in a Bi(Mg_1/2Ti_1/2)O₃–PbTiO₃ ferroelectric re-entrant relaxor

Evolving Differentiated Local Polar Displacement and Relaxor Behavior in Pb(Mg_1/3Nb_2/3)O₃–PbTiO₃ Perovskites

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Compositional ordering in relaxor ferroelectric Pb(BB′)O3 : Nearest neighbor approach

Cited by 5 publications

References 35 publications

The Influence of the Elemental Composition, Crystal Structure, and Grain Structure of the Ferro-Piezoceramics of Various Degrees of the Ferro-Hardness on the Stability of the Polarized State

The Influence of the Elemental Composition, Crystal Structure, and Grain Structure of the Ferro-Piezoceramics of Various Degrees of the Ferro-Hardness on the Stability of the Polarized State

Size and orientation of polar nanoregions characterized by PDF analysis and using a statistical model in a Bi(Mg1/2Ti1/2)O3–PbTiO3 ferroelectric re-entrant relaxor

Evolving Differentiated Local Polar Displacement and Relaxor Behavior in Pb(Mg1/3Nb2/3)O3–PbTiO3 Perovskites

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Product

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About

Size and orientation of polar nanoregions characterized by PDF analysis and using a statistical model in a Bi(Mg_1/2Ti_1/2)O₃–PbTiO₃ ferroelectric re-entrant relaxor

Evolving Differentiated Local Polar Displacement and Relaxor Behavior in Pb(Mg_1/3Nb_2/3)O₃–PbTiO₃ Perovskites