Acoustic emission study of PZN-7%PT crystals

Evgeniy Dul'Kin; Evgeny Mojaev; Michael Roth; Pierre Eymeric Janolin; Brahim Dkhil

doi:10.1080/00150190701354125

Acoustic emission study of PZN-7%PT crystals

Evgeniy Dul'Kin^*, Evgeny Mojaev, Michael Roth, Pierre Eymeric Janolin, Brahim Dkhil

^*Corresponding author for this work

Department of Applied Physics

Research output: Contribution to journal › Conference article › peer-review

11 Scopus citations

Abstract

Phase transitions in PbZn_1/3Nb_2/3O ₃-7%PbTiO₃ (PZN-7%PT) relaxor ferroelectric crystals have been investigated by the acoustic emission (AE) method. Two types of transitions have been detected: (i) associated with the thermally induced (on cooling) formation of intrinsic polar nanoregions (PNRs) and (ii) related to the electric-field-induced macroscopic phase transitions. An AE signal found near 740 K corresponds to the Burns temperature, below which the PNRs begin to form. Further cooling reveals an AE signal at 500 K, which is ascribed to the shift of PNRs along their polar direction relative to the surrounding non-polar matrix in the framework of the "phase-shifted condensed soft mode" model. Monitoring of the AE response of PZN-7%PT crystals under an increasing [001] dc electric field has allowed a unique in situ observation of a sequence of phase transitions, from the zero-field rhombohedral via M_A monoclinic (∼3 kV/cm) and M_C monoclinic (∼16 kV/cm) to the tetragonal (∼19 kV/cm) phase, respectively. It is shown that AE is a very sensitive method for detecting both the PNRs kinetics and low distortion phase transitions in relaxor ferroelectrics.

Original language	English
Pages (from-to)	131-137
Number of pages	7
Journal	Ferroelectrics
Volume	351
Issue number	1 PART 1
DOIs	https://doi.org/10.1080/00150190701354125
State	Published - 2007
Event	8th European Conference on Applications of Polar Dielectrics, ECAPD'8 - Metz, France Duration: 5 Sep 2006 → 8 Sep 2006

Keywords

Acoustic emission
Burns temperature
Phase transition
Rlaxor ferroelectrics

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10.1080/00150190701354125

Cite this

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title = "Acoustic emission study of PZN-7%PT crystals",

abstract = "Phase transitions in PbZn1/3Nb2/3O 3-7%PbTiO3 (PZN-7%PT) relaxor ferroelectric crystals have been investigated by the acoustic emission (AE) method. Two types of transitions have been detected: (i) associated with the thermally induced (on cooling) formation of intrinsic polar nanoregions (PNRs) and (ii) related to the electric-field-induced macroscopic phase transitions. An AE signal found near 740 K corresponds to the Burns temperature, below which the PNRs begin to form. Further cooling reveals an AE signal at 500 K, which is ascribed to the shift of PNRs along their polar direction relative to the surrounding non-polar matrix in the framework of the {"}phase-shifted condensed soft mode{"} model. Monitoring of the AE response of PZN-7%PT crystals under an increasing [001] dc electric field has allowed a unique in situ observation of a sequence of phase transitions, from the zero-field rhombohedral via MA monoclinic (∼3 kV/cm) and MC monoclinic (∼16 kV/cm) to the tetragonal (∼19 kV/cm) phase, respectively. It is shown that AE is a very sensitive method for detecting both the PNRs kinetics and low distortion phase transitions in relaxor ferroelectrics.",

keywords = "Acoustic emission, Burns temperature, Phase transition, Rlaxor ferroelectrics",

author = "Evgeniy Dul'Kin and Evgeny Mojaev and Michael Roth and Janolin, {Pierre Eymeric} and Brahim Dkhil",

year = "2007",

doi = "10.1080/00150190701354125",

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journal = "Ferroelectrics",

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T1 - Acoustic emission study of PZN-7%PT crystals

AU - Dul'Kin, Evgeniy

AU - Mojaev, Evgeny

AU - Roth, Michael

AU - Janolin, Pierre Eymeric

AU - Dkhil, Brahim

PY - 2007

Y1 - 2007

N2 - Phase transitions in PbZn1/3Nb2/3O 3-7%PbTiO3 (PZN-7%PT) relaxor ferroelectric crystals have been investigated by the acoustic emission (AE) method. Two types of transitions have been detected: (i) associated with the thermally induced (on cooling) formation of intrinsic polar nanoregions (PNRs) and (ii) related to the electric-field-induced macroscopic phase transitions. An AE signal found near 740 K corresponds to the Burns temperature, below which the PNRs begin to form. Further cooling reveals an AE signal at 500 K, which is ascribed to the shift of PNRs along their polar direction relative to the surrounding non-polar matrix in the framework of the "phase-shifted condensed soft mode" model. Monitoring of the AE response of PZN-7%PT crystals under an increasing [001] dc electric field has allowed a unique in situ observation of a sequence of phase transitions, from the zero-field rhombohedral via MA monoclinic (∼3 kV/cm) and MC monoclinic (∼16 kV/cm) to the tetragonal (∼19 kV/cm) phase, respectively. It is shown that AE is a very sensitive method for detecting both the PNRs kinetics and low distortion phase transitions in relaxor ferroelectrics.

AB - Phase transitions in PbZn1/3Nb2/3O 3-7%PbTiO3 (PZN-7%PT) relaxor ferroelectric crystals have been investigated by the acoustic emission (AE) method. Two types of transitions have been detected: (i) associated with the thermally induced (on cooling) formation of intrinsic polar nanoregions (PNRs) and (ii) related to the electric-field-induced macroscopic phase transitions. An AE signal found near 740 K corresponds to the Burns temperature, below which the PNRs begin to form. Further cooling reveals an AE signal at 500 K, which is ascribed to the shift of PNRs along their polar direction relative to the surrounding non-polar matrix in the framework of the "phase-shifted condensed soft mode" model. Monitoring of the AE response of PZN-7%PT crystals under an increasing [001] dc electric field has allowed a unique in situ observation of a sequence of phase transitions, from the zero-field rhombohedral via MA monoclinic (∼3 kV/cm) and MC monoclinic (∼16 kV/cm) to the tetragonal (∼19 kV/cm) phase, respectively. It is shown that AE is a very sensitive method for detecting both the PNRs kinetics and low distortion phase transitions in relaxor ferroelectrics.

KW - Acoustic emission

KW - Burns temperature

KW - Phase transition

KW - Rlaxor ferroelectrics

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T2 - 8th European Conference on Applications of Polar Dielectrics, ECAPD'8

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ER -

Acoustic emission study of PZN-7%PT crystals

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