Peculiar properties of phase transitions in Na0.5 Bi0.5 TiO3-0.06BaTiO3 lead-free relaxor ferroelectrics seen via acoustic emission

Evgeniy Dul'kin; Jenia Tiagunova; Evgeny Mojaev; Michael Roth

doi:10.1142/S1793604717500485

Peculiar properties of phase transitions in Na_0.5 Bi_0.5 TiO₃-0.06BaTiO₃ lead-free relaxor ferroelectrics seen via acoustic emission

Evgeniy Dul'kin^*, Jenia Tiagunova, Evgeny Mojaev, Michael Roth

^*Corresponding author for this work

Department of Applied Physics

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

6 Scopus citations

Abstract

Na_0.5Bi_0.5TiO₃-0.06BaTiO₃ relaxor ferroelectrics (RFEs) ceramic samples were investigated by means of dielectric and acoustic emission methods in the temperature range of 70-350C and in dependence on frequency. Dielectric curve exhibits two anomalies: strongly dispersive the local maximum, within 130-180C and slightly dispersive the smeared high-temperature maximum within 300-310C. Acoustic emission exhibits the five groups of bursts: near 123C, 150-180C, near 225C, 300-310C and 327C. The first and third groups of acoustic emission bursts correspond to phase transitions of R3c-P4bm phases coexisting in this temperature, range, while the fourth and fifth groups of acoustic emission bursts correspond to P4bm-P4/mbm-Pm3 m phase transitions. The second group of acoustic emission bursts corresponds to strongly dispersive local maximum at which no phase transition has been proved in Na0.5Bi0.5TiO₃-0.06BaTiO₃. The existence and the location of the intermediate temperature, T∗, in Na0.5Bi0.5TiO₃-0.06BaTiO₃ compound are discussed.

Original language	American English
Article number	1750048
Journal	Functional Materials Letters
Volume	10
Issue number	4
DOIs	https://doi.org/10.1142/S1793604717500485
State	Published - 1 Aug 2017

Bibliographical note

Publisher Copyright:
© 2017 World Scientific Publishing Company.

Keywords

Burns temperature
Lead-free relaxor ferroelectrics
acoustic emission
intermediate temperature
phase transitions

Access to Document

10.1142/S1793604717500485

Cite this

@article{39174b90231645a4b7448c7d44330124,

title = "Peculiar properties of phase transitions in Na0.5 Bi0.5 TiO3-0.06BaTiO3 lead-free relaxor ferroelectrics seen via acoustic emission",

abstract = "Na0.5Bi0.5TiO3-0.06BaTiO3 relaxor ferroelectrics (RFEs) ceramic samples were investigated by means of dielectric and acoustic emission methods in the temperature range of 70-350C and in dependence on frequency. Dielectric curve exhibits two anomalies: strongly dispersive the local maximum, within 130-180C and slightly dispersive the smeared high-temperature maximum within 300-310C. Acoustic emission exhibits the five groups of bursts: near 123C, 150-180C, near 225C, 300-310C and 327C. The first and third groups of acoustic emission bursts correspond to phase transitions of R3c-P4bm phases coexisting in this temperature, range, while the fourth and fifth groups of acoustic emission bursts correspond to P4bm-P4/mbm-Pm3 m phase transitions. The second group of acoustic emission bursts corresponds to strongly dispersive local maximum at which no phase transition has been proved in Na0.5Bi0.5TiO3-0.06BaTiO3. The existence and the location of the intermediate temperature, T∗, in Na0.5Bi0.5TiO3-0.06BaTiO3 compound are discussed.",

keywords = "Burns temperature, Lead-free relaxor ferroelectrics, acoustic emission, intermediate temperature, phase transitions",

author = "Evgeniy Dul'kin and Jenia Tiagunova and Evgeny Mojaev and Michael Roth",

note = "Publisher Copyright: {\textcopyright} 2017 World Scientific Publishing Company.",

year = "2017",

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doi = "10.1142/S1793604717500485",

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T1 - Peculiar properties of phase transitions in Na0.5 Bi0.5 TiO3-0.06BaTiO3 lead-free relaxor ferroelectrics seen via acoustic emission

AU - Dul'kin, Evgeniy

AU - Tiagunova, Jenia

AU - Mojaev, Evgeny

AU - Roth, Michael

PY - 2017/8/1

Y1 - 2017/8/1

N2 - Na0.5Bi0.5TiO3-0.06BaTiO3 relaxor ferroelectrics (RFEs) ceramic samples were investigated by means of dielectric and acoustic emission methods in the temperature range of 70-350C and in dependence on frequency. Dielectric curve exhibits two anomalies: strongly dispersive the local maximum, within 130-180C and slightly dispersive the smeared high-temperature maximum within 300-310C. Acoustic emission exhibits the five groups of bursts: near 123C, 150-180C, near 225C, 300-310C and 327C. The first and third groups of acoustic emission bursts correspond to phase transitions of R3c-P4bm phases coexisting in this temperature, range, while the fourth and fifth groups of acoustic emission bursts correspond to P4bm-P4/mbm-Pm3 m phase transitions. The second group of acoustic emission bursts corresponds to strongly dispersive local maximum at which no phase transition has been proved in Na0.5Bi0.5TiO3-0.06BaTiO3. The existence and the location of the intermediate temperature, T∗, in Na0.5Bi0.5TiO3-0.06BaTiO3 compound are discussed.

AB - Na0.5Bi0.5TiO3-0.06BaTiO3 relaxor ferroelectrics (RFEs) ceramic samples were investigated by means of dielectric and acoustic emission methods in the temperature range of 70-350C and in dependence on frequency. Dielectric curve exhibits two anomalies: strongly dispersive the local maximum, within 130-180C and slightly dispersive the smeared high-temperature maximum within 300-310C. Acoustic emission exhibits the five groups of bursts: near 123C, 150-180C, near 225C, 300-310C and 327C. The first and third groups of acoustic emission bursts correspond to phase transitions of R3c-P4bm phases coexisting in this temperature, range, while the fourth and fifth groups of acoustic emission bursts correspond to P4bm-P4/mbm-Pm3 m phase transitions. The second group of acoustic emission bursts corresponds to strongly dispersive local maximum at which no phase transition has been proved in Na0.5Bi0.5TiO3-0.06BaTiO3. The existence and the location of the intermediate temperature, T∗, in Na0.5Bi0.5TiO3-0.06BaTiO3 compound are discussed.

KW - Burns temperature

KW - Lead-free relaxor ferroelectrics

KW - acoustic emission

KW - intermediate temperature

KW - phase transitions

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