Pyroelectric study on dipolar alignment in 0.69Pb(Mg1/3Nb 2/3)O3-0.31PbTiO3 single crystals

Liang Zhao; Ming Rong Shen; Wen Wu Cao

doi:10.1088/0256-307X/29/4/047702

Pyroelectric study on dipolar alignment in 0.69Pb(Mg_1/3Nb _2/3)O₃-0.31PbTiO₃ single crystals

Liang Zhao, Ming Rong Shen, Wen Wu Cao

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Abstract

Pyroelectric measurements are conducted during zero-field heating in [001], [110] and [111] poled 0.69Pb(Mg_1/3Nb_2/3)O ₃-0.31PbTiO₃ single crystals. Compared to the room-temperature-poled samples, the crystals poled by using the field cooling method show broad but well recognizable pyroelectric current peaks near 190°C, which is much higher than the Curie point (126°C) of the crystal. We propose that this peak of the crystals poled by field-cooling above the Curie point is ascribed to the order-disorder transition of the dipoles in polar nano-regions formed at the Burns temperature.

Original language	English (US)
Article number	047702
Journal	Chinese Physics Letters
Volume	29
Issue number	4
DOIs	https://doi.org/10.1088/0256-307X/29/4/047702
State	Published - Apr 2012

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1088/0256-307X/29/4/047702

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title = "Pyroelectric study on dipolar alignment in 0.69Pb(Mg1/3Nb 2/3)O3-0.31PbTiO3 single crystals",

abstract = "Pyroelectric measurements are conducted during zero-field heating in [001], [110] and [111] poled 0.69Pb(Mg1/3Nb2/3)O 3-0.31PbTiO3 single crystals. Compared to the room-temperature-poled samples, the crystals poled by using the field cooling method show broad but well recognizable pyroelectric current peaks near 190°C, which is much higher than the Curie point (126°C) of the crystal. We propose that this peak of the crystals poled by field-cooling above the Curie point is ascribed to the order-disorder transition of the dipoles in polar nano-regions formed at the Burns temperature.",

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AU - Cao, Wen Wu

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N2 - Pyroelectric measurements are conducted during zero-field heating in [001], [110] and [111] poled 0.69Pb(Mg1/3Nb2/3)O 3-0.31PbTiO3 single crystals. Compared to the room-temperature-poled samples, the crystals poled by using the field cooling method show broad but well recognizable pyroelectric current peaks near 190°C, which is much higher than the Curie point (126°C) of the crystal. We propose that this peak of the crystals poled by field-cooling above the Curie point is ascribed to the order-disorder transition of the dipoles in polar nano-regions formed at the Burns temperature.

AB - Pyroelectric measurements are conducted during zero-field heating in [001], [110] and [111] poled 0.69Pb(Mg1/3Nb2/3)O 3-0.31PbTiO3 single crystals. Compared to the room-temperature-poled samples, the crystals poled by using the field cooling method show broad but well recognizable pyroelectric current peaks near 190°C, which is much higher than the Curie point (126°C) of the crystal. We propose that this peak of the crystals poled by field-cooling above the Curie point is ascribed to the order-disorder transition of the dipoles in polar nano-regions formed at the Burns temperature.

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Pyroelectric study on dipolar alignment in 0.69Pb(Mg_1/3Nb _2/3)O₃-0.31PbTiO₃ single crystals

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