Random electric field strength distribution in lead-free relaxor ferroelectrics caused by barium content

Evgeniy Dul'Kin; Jiwei Zhai; Michael Roth

doi:10.1142/S1793604720500125

Random electric field strength distribution in lead-free relaxor ferroelectrics caused by barium content

Evgeniy Dul'Kin^*, Jiwei Zhai, Michael Roth

^*Corresponding author for this work

Department of Applied Physics

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

Abstract

Curie temperature behavior of Ba_xSr_1-xTiO₃ ferroelectrics ceramic (x=0.9) in dependence on bias field is detected by means of acoustic emission. Curie temperature exhibits nontrivial V-shape effect with threshold field of 0.3kV/cm, equivalent to random electric fields strength. This random field strength is compared with those in Ba_xSr_1-xTiO₃ relaxor ferroelectrics (x=0.6, 0.7, 0.8) obtained previously, as well as with those determined from mean domain sizes in Ba_xSr_1-xNb₂O₆ relaxor ferroelectrics (x=0.25, 0.39, 0.6). It is estimated that the random field strength of Ba_0.6Sr_0.4TiO₃ is 30 times stronger than those of Ba_0.6Sr_0.4Nb₂O₆ and it is shown that the random field strengths of both Ba_xSr_1-xTiO₃ and Ba_xSr_1-xNb₂O₆ obey the same exponential law in dependence on barium content.

Original language	English
Article number	2050012
Journal	Functional Materials Letters
Volume	13
Issue number	3
DOIs	https://doi.org/10.1142/S1793604720500125
State	Published - 1 Apr 2020

Bibliographical note

Publisher Copyright:
© 2020 World Scientific Publishing Company.

Keywords

Relaxor ferroelectrics
acoustic emission
polar nanoregions
random electric fields

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10.1142/S1793604720500125

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title = "Random electric field strength distribution in lead-free relaxor ferroelectrics caused by barium content",

abstract = "Curie temperature behavior of BaxSr1-xTiO3 ferroelectrics ceramic (x=0.9) in dependence on bias field is detected by means of acoustic emission. Curie temperature exhibits nontrivial V-shape effect with threshold field of 0.3kV/cm, equivalent to random electric fields strength. This random field strength is compared with those in BaxSr1-xTiO3 relaxor ferroelectrics (x=0.6, 0.7, 0.8) obtained previously, as well as with those determined from mean domain sizes in BaxSr1-xNb2O6 relaxor ferroelectrics (x=0.25, 0.39, 0.6). It is estimated that the random field strength of Ba0.6Sr0.4TiO3 is 30 times stronger than those of Ba0.6Sr0.4Nb2O6 and it is shown that the random field strengths of both BaxSr1-xTiO3 and BaxSr1-xNb2O6 obey the same exponential law in dependence on barium content.",

keywords = "Relaxor ferroelectrics, acoustic emission, polar nanoregions, random electric fields",

author = "Evgeniy Dul'Kin and Jiwei Zhai and Michael Roth",

note = "Publisher Copyright: {\textcopyright} 2020 World Scientific Publishing Company.",

year = "2020",

month = apr,

day = "1",

doi = "10.1142/S1793604720500125",

language = "אנגלית",

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journal = "Functional Materials Letters",

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T1 - Random electric field strength distribution in lead-free relaxor ferroelectrics caused by barium content

AU - Dul'Kin, Evgeniy

AU - Zhai, Jiwei

AU - Roth, Michael

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Curie temperature behavior of BaxSr1-xTiO3 ferroelectrics ceramic (x=0.9) in dependence on bias field is detected by means of acoustic emission. Curie temperature exhibits nontrivial V-shape effect with threshold field of 0.3kV/cm, equivalent to random electric fields strength. This random field strength is compared with those in BaxSr1-xTiO3 relaxor ferroelectrics (x=0.6, 0.7, 0.8) obtained previously, as well as with those determined from mean domain sizes in BaxSr1-xNb2O6 relaxor ferroelectrics (x=0.25, 0.39, 0.6). It is estimated that the random field strength of Ba0.6Sr0.4TiO3 is 30 times stronger than those of Ba0.6Sr0.4Nb2O6 and it is shown that the random field strengths of both BaxSr1-xTiO3 and BaxSr1-xNb2O6 obey the same exponential law in dependence on barium content.

AB - Curie temperature behavior of BaxSr1-xTiO3 ferroelectrics ceramic (x=0.9) in dependence on bias field is detected by means of acoustic emission. Curie temperature exhibits nontrivial V-shape effect with threshold field of 0.3kV/cm, equivalent to random electric fields strength. This random field strength is compared with those in BaxSr1-xTiO3 relaxor ferroelectrics (x=0.6, 0.7, 0.8) obtained previously, as well as with those determined from mean domain sizes in BaxSr1-xNb2O6 relaxor ferroelectrics (x=0.25, 0.39, 0.6). It is estimated that the random field strength of Ba0.6Sr0.4TiO3 is 30 times stronger than those of Ba0.6Sr0.4Nb2O6 and it is shown that the random field strengths of both BaxSr1-xTiO3 and BaxSr1-xNb2O6 obey the same exponential law in dependence on barium content.

KW - Relaxor ferroelectrics

KW - acoustic emission

KW - polar nanoregions

KW - random electric fields

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SN - 1793-6047

VL - 13

JO - Functional Materials Letters

JF - Functional Materials Letters

IS - 3

M1 - 2050012

ER -

Random electric field strength distribution in lead-free relaxor ferroelectrics caused by barium content

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