Evolution of electromechanical properties of Bi1-xPrxFeO3 solid solutions across the rhombohedral-orthorhombic phase boundary: Role of covalency

D. V. Karpinsky; I. O. Troyanchuk; N. V. Pushkarev; A. Dziaugys; V. Sikolenko; V. Efimov; A. L. Kholkin

doi:10.1016/j.jallcom.2015.03.079

Evolution of electromechanical properties of Bi₁_-_xPr_xFeO₃ solid solutions across the rhombohedral-orthorhombic phase boundary: Role of covalency

D. V. Karpinsky^*
, I. O. Troyanchuk
, N. V. Pushkarev
, A. Dziaugys
, V. Sikolenko
, V. Efimov
, A. L. Kholkin

^*Corresponding author for this work

University of Aveiro
Belarus Academy of Sciences
Belarusian State University
Vilnius University
Free University of Berlin
Joint Institute for Nuclear Research
Ural Federal University

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Bi₁_-_xPr_xFeO₃ ceramics of the compositions across the rhombohedral-orthorhombic phase boundary have been studied by X-ray diffraction and piezoresponse force microscopy. Charge density calculations and transport properties measurements have also been performed. Piezoresponse force microscopy measurements revealed a considerable increase of the piezoresponse signal for the x = 0.125 compound with dominant polar rhombohedral phase and minor amount of antipolar orthorhombic phase. Electron density distribution study testified significant increase of covalency of this compound as compared with gradual delocalization of electronic wave functions observed for other Bi₁_-_xPr_xFeO₃ compounds with higher praseodymium content. Alteration of charge distribution character has been confirmed by resistivity measurements.

Original language	English
Pages (from-to)	429-434
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	638
DOIs	https://doi.org/10.1016/j.jallcom.2015.03.079
Publication status	Published - 25 Jul 2015
Externally published	Yes

Keywords

Charge density distribution
Covalency
Crystal structure
Ferroelectrics
Phase transition

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10.1016/j.jallcom.2015.03.079

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@article{bbd82215b1dd4bd29328a4c549a94f1d,

title = "Evolution of electromechanical properties of Bi1-xPrxFeO3 solid solutions across the rhombohedral-orthorhombic phase boundary: Role of covalency",

abstract = "Bi1-xPrxFeO3 ceramics of the compositions across the rhombohedral-orthorhombic phase boundary have been studied by X-ray diffraction and piezoresponse force microscopy. Charge density calculations and transport properties measurements have also been performed. Piezoresponse force microscopy measurements revealed a considerable increase of the piezoresponse signal for the x = 0.125 compound with dominant polar rhombohedral phase and minor amount of antipolar orthorhombic phase. Electron density distribution study testified significant increase of covalency of this compound as compared with gradual delocalization of electronic wave functions observed for other Bi1-xPrxFeO3 compounds with higher praseodymium content. Alteration of charge distribution character has been confirmed by resistivity measurements.",

keywords = "Charge density distribution, Covalency, Crystal structure, Ferroelectrics, Phase transition",

author = "Karpinsky, \{D. V.\} and Troyanchuk, \{I. O.\} and Pushkarev, \{N. V.\} and A. Dziaugys and V. Sikolenko and V. Efimov and Kholkin, \{A. L.\}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = jul,

day = "25",

doi = "10.1016/j.jallcom.2015.03.079",

language = "English",

volume = "638",

pages = "429--434",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Evolution of electromechanical properties of Bi1-xPrxFeO3 solid solutions across the rhombohedral-orthorhombic phase boundary

T2 - Role of covalency

AU - Karpinsky, D. V.

AU - Troyanchuk, I. O.

AU - Pushkarev, N. V.

AU - Dziaugys, A.

AU - Sikolenko, V.

AU - Efimov, V.

AU - Kholkin, A. L.

PY - 2015/7/25

Y1 - 2015/7/25

N2 - Bi1-xPrxFeO3 ceramics of the compositions across the rhombohedral-orthorhombic phase boundary have been studied by X-ray diffraction and piezoresponse force microscopy. Charge density calculations and transport properties measurements have also been performed. Piezoresponse force microscopy measurements revealed a considerable increase of the piezoresponse signal for the x = 0.125 compound with dominant polar rhombohedral phase and minor amount of antipolar orthorhombic phase. Electron density distribution study testified significant increase of covalency of this compound as compared with gradual delocalization of electronic wave functions observed for other Bi1-xPrxFeO3 compounds with higher praseodymium content. Alteration of charge distribution character has been confirmed by resistivity measurements.

AB - Bi1-xPrxFeO3 ceramics of the compositions across the rhombohedral-orthorhombic phase boundary have been studied by X-ray diffraction and piezoresponse force microscopy. Charge density calculations and transport properties measurements have also been performed. Piezoresponse force microscopy measurements revealed a considerable increase of the piezoresponse signal for the x = 0.125 compound with dominant polar rhombohedral phase and minor amount of antipolar orthorhombic phase. Electron density distribution study testified significant increase of covalency of this compound as compared with gradual delocalization of electronic wave functions observed for other Bi1-xPrxFeO3 compounds with higher praseodymium content. Alteration of charge distribution character has been confirmed by resistivity measurements.

KW - Charge density distribution

KW - Covalency

KW - Crystal structure

KW - Ferroelectrics

KW - Phase transition

UR - https://www.scopus.com/pages/publications/84926050716

U2 - 10.1016/j.jallcom.2015.03.079

DO - 10.1016/j.jallcom.2015.03.079

M3 - Article

AN - SCOPUS:84926050716

SN - 0925-8388

VL - 638

SP - 429

EP - 434

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Evolution of electromechanical properties of Bi₁_-_xPr_xFeO₃ solid solutions across the rhombohedral-orthorhombic phase boundary: Role of covalency

Abstract

Keywords

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