Phase transition and dielectric properties of nanograin BaTi O3 ceramic under high pressure

Jinlong Zhu; Changqing Jin; Wenwu Cao; Xiaohui Wang

doi:10.1063/1.2944253

Phase transition and dielectric properties of nanograin BaTi O3 ceramic under high pressure

Jinlong Zhu, Changqing Jin, Wenwu Cao, Xiaohui Wang

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Abstract

Temperature dependence of the dielectric constant of nanograin BaTiO ₃ ceramic has been investigated under hydrostatic pressure σ up to 5 GPa. We found that the paraelectric-ferroelectric phase transition temperature TC decreases with σ at a rate of dT_C/dσ=-40.0 (±1.1) KGPa for coarse-grain ceramic and -34.3 (±1.4) KGPa for ceramic with 60 nm grains. The variation of intergranular stresses with reducing grain size is considered as the main factor causing the decrease of TC and the change of d TC dσ.

Original language	English (US)
Article number	242901
Journal	Applied Physics Letters
Volume	92
Issue number	24
DOIs	https://doi.org/10.1063/1.2944253
State	Published - 2008

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2944253

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title = "Phase transition and dielectric properties of nanograin BaTi O3 ceramic under high pressure",

abstract = "Temperature dependence of the dielectric constant of nanograin BaTiO 3 ceramic has been investigated under hydrostatic pressure σ up to 5 GPa. We found that the paraelectric-ferroelectric phase transition temperature TC decreases with σ at a rate of dTC/dσ=-40.0 (±1.1) KGPa for coarse-grain ceramic and -34.3 (±1.4) KGPa for ceramic with 60 nm grains. The variation of intergranular stresses with reducing grain size is considered as the main factor causing the decrease of TC and the change of d TC dσ.",

author = "Jinlong Zhu and Changqing Jin and Wenwu Cao and Xiaohui Wang",

note = "Funding Information: This research was supported by NSF and MOST of China through research projects (2002CB61330; 2005CB724402; 2007CB925003) and by the NIH under Grant No. P41-EB2182.",

year = "2008",

doi = "10.1063/1.2944253",

language = "English (US)",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Phase transition and dielectric properties of nanograin BaTi O3 ceramic under high pressure

AU - Zhu, Jinlong

AU - Jin, Changqing

AU - Cao, Wenwu

AU - Wang, Xiaohui

N1 - Funding Information: This research was supported by NSF and MOST of China through research projects (2002CB61330; 2005CB724402; 2007CB925003) and by the NIH under Grant No. P41-EB2182.

PY - 2008

Y1 - 2008

N2 - Temperature dependence of the dielectric constant of nanograin BaTiO 3 ceramic has been investigated under hydrostatic pressure σ up to 5 GPa. We found that the paraelectric-ferroelectric phase transition temperature TC decreases with σ at a rate of dTC/dσ=-40.0 (±1.1) KGPa for coarse-grain ceramic and -34.3 (±1.4) KGPa for ceramic with 60 nm grains. The variation of intergranular stresses with reducing grain size is considered as the main factor causing the decrease of TC and the change of d TC dσ.

AB - Temperature dependence of the dielectric constant of nanograin BaTiO 3 ceramic has been investigated under hydrostatic pressure σ up to 5 GPa. We found that the paraelectric-ferroelectric phase transition temperature TC decreases with σ at a rate of dTC/dσ=-40.0 (±1.1) KGPa for coarse-grain ceramic and -34.3 (±1.4) KGPa for ceramic with 60 nm grains. The variation of intergranular stresses with reducing grain size is considered as the main factor causing the decrease of TC and the change of d TC dσ.

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DO - 10.1063/1.2944253

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

M1 - 242901

ER -

Phase transition and dielectric properties of nanograin BaTi O3 ceramic under high pressure

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