Nontrivial behavior of Tc at the small electric field in BaTiO3 crystals, detected by means of acoustic emission

E. Dul'Kin; M. Roth

doi:https://doi.org/10.1088/0953-8984/25/15/155901

Nontrivial behavior of T_c at the small electric field in BaTiO₃ crystals, detected by means of acoustic emission

E. Dul'Kin, M. Roth

Department of Applied Physics

The Hebrew University of Jerusalem

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

Abstract

Cubic-tetragonal phase transitions of [100]-oriented BaTiO₃ crystals have been studied by means of an acoustic emission (AE) method, under an external electric field. The Curie temperature (T_c) reveals a nontrivial behavior at the small field, namely, it initially decreases with enhancement of the field, attains a minimum at the threshold field E _th = 0.256 kV cm^-1, accompanied by the AE count rate , and then starts increasing with a rate of 1.5 K m kV^-1 as the field is enhanced. Such nontrivial behavior of T_c is explained as due to the presence of polar nanoregions, recently revealed in BaTiO₃ crystals (Ko et al 2011 Phys. Rev. B 84 094123).

Original language	English
Article number	155901
Journal	Journal of Physics Condensed Matter
Volume	25
Issue number	15
DOIs	https://doi.org/10.1088/0953-8984/25/15/155901
State	Published - 17 Apr 2013

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
General Materials Science

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https://doi.org/10.1088/0953-8984/25/15/155901

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title = "Nontrivial behavior of Tc at the small electric field in BaTiO3 crystals, detected by means of acoustic emission",

abstract = "Cubic-tetragonal phase transitions of [100]-oriented BaTiO3 crystals have been studied by means of an acoustic emission (AE) method, under an external electric field. The Curie temperature (Tc) reveals a nontrivial behavior at the small field, namely, it initially decreases with enhancement of the field, attains a minimum at the threshold field E th = 0.256 kV cm-1, accompanied by the AE count rate , and then starts increasing with a rate of 1.5 K m kV-1 as the field is enhanced. Such nontrivial behavior of Tc is explained as due to the presence of polar nanoregions, recently revealed in BaTiO3 crystals (Ko et al 2011 Phys. Rev. B 84 094123).",

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doi = "https://doi.org/10.1088/0953-8984/25/15/155901",

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T1 - Nontrivial behavior of Tc at the small electric field in BaTiO3 crystals, detected by means of acoustic emission

AU - Dul'Kin, E.

AU - Roth, M.

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Y1 - 2013/4/17

N2 - Cubic-tetragonal phase transitions of [100]-oriented BaTiO3 crystals have been studied by means of an acoustic emission (AE) method, under an external electric field. The Curie temperature (Tc) reveals a nontrivial behavior at the small field, namely, it initially decreases with enhancement of the field, attains a minimum at the threshold field E th = 0.256 kV cm-1, accompanied by the AE count rate , and then starts increasing with a rate of 1.5 K m kV-1 as the field is enhanced. Such nontrivial behavior of Tc is explained as due to the presence of polar nanoregions, recently revealed in BaTiO3 crystals (Ko et al 2011 Phys. Rev. B 84 094123).

AB - Cubic-tetragonal phase transitions of [100]-oriented BaTiO3 crystals have been studied by means of an acoustic emission (AE) method, under an external electric field. The Curie temperature (Tc) reveals a nontrivial behavior at the small field, namely, it initially decreases with enhancement of the field, attains a minimum at the threshold field E th = 0.256 kV cm-1, accompanied by the AE count rate , and then starts increasing with a rate of 1.5 K m kV-1 as the field is enhanced. Such nontrivial behavior of Tc is explained as due to the presence of polar nanoregions, recently revealed in BaTiO3 crystals (Ko et al 2011 Phys. Rev. B 84 094123).

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DO - https://doi.org/10.1088/0953-8984/25/15/155901

M3 - مقالة

SN - 0953-8984

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 15

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Nontrivial behavior of T_c at the small electric field in BaTiO₃ crystals, detected by means of acoustic emission

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