Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi1/2Na1/2)TiO3-xBaTiO3 piezoelectric ceramics

Eva Sapper; Robert  Dittmer; Dragan Damjanovic; Emre Erdem; David J. Keeble; Wook Jo; Torsten Granzow; Jürgen Rödel

doi:10.1063/1.4894630

Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi_1/2Na_1/2)TiO₃-xBaTiO₃ piezoelectric ceramics

Eva Sapper, Robert Dittmer, Dragan Damjanovic, Emre Erdem, David J. Keeble, Wook Jo, Torsten Granzow, Jürgen Rödel

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Abstract

Aging of piezoelectric properties was investigated in lead-free (1 − x)(Bi_1/2Na_1/2)TiO₃-xBaTiO₃ doped with 1at. % Fe. The relaxor character of the un-poled material prevents macroscopic aging effects, while in the field-induced ferroelectric phase aging phenomena are similar to those found in lead zirconate titanate or barium titanate. Most prominent aging effects are the development of an internal bias field and the decrease of switchable polarization. These effects are temperature activated, and can be explained in the framework of defect complex reorientation. This picture is further supported by electron paramagnetic resonance spectra indicating the existence of (Fe_Ti ′−V_O ••)• defect complexes in the Fe-doped material

Original language	English
Article number	104102
Number of pages	12
Journal	Journal of Applied Physics
Volume	116
Issue number	10
Early online date	9 Sep 2014
DOIs	https://doi.org/10.1063/1.4894630
Publication status	Published - 14 Sep 2014

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Sapper, E., Dittmer, R., Damjanovic, D., Erdem, E., Keeble, D. J., Jo, W., Granzow, T., & Rödel, J. (2014). Aging in the relaxor and ferroelectric state of Fe-doped (1-x)(Bi_1/2Na_1/2)TiO₃-xBaTiO₃ piezoelectric ceramics. Journal of Applied Physics, 116(10), [104102]. https://doi.org/10.1063/1.4894630

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abstract = "Aging of piezoelectric properties was investigated in lead-free (1 − x)(Bi1/2Na1/2)TiO3-xBaTiO3 doped with 1at. % Fe. The relaxor character of the un-poled material prevents macroscopic aging effects, while in the field-induced ferroelectric phase aging phenomena are similar to those found in lead zirconate titanate or barium titanate. Most prominent aging effects are the development of an internal bias field and the decrease of switchable polarization. These effects are temperature activated, and can be explained in the framework of defect complex reorientation. This picture is further supported by electron paramagnetic resonance spectra indicating the existence of (FeTi ′−VO ••)• defect complexes in the Fe-doped material",

author = "Eva Sapper and Robert Dittmer and Dragan Damjanovic and Emre Erdem and Keeble, {David J.} and Wook Jo and Torsten Granzow and J{\"u}rgen R{\"o}del",

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AU - Sapper, Eva

AU - Dittmer, Robert

AU - Damjanovic, Dragan

AU - Erdem, Emre

AU - Keeble, David J.

AU - Jo, Wook

AU - Granzow, Torsten

AU - Rödel, Jürgen

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N2 - Aging of piezoelectric properties was investigated in lead-free (1 − x)(Bi1/2Na1/2)TiO3-xBaTiO3 doped with 1at. % Fe. The relaxor character of the un-poled material prevents macroscopic aging effects, while in the field-induced ferroelectric phase aging phenomena are similar to those found in lead zirconate titanate or barium titanate. Most prominent aging effects are the development of an internal bias field and the decrease of switchable polarization. These effects are temperature activated, and can be explained in the framework of defect complex reorientation. This picture is further supported by electron paramagnetic resonance spectra indicating the existence of (FeTi ′−VO ••)• defect complexes in the Fe-doped material

AB - Aging of piezoelectric properties was investigated in lead-free (1 − x)(Bi1/2Na1/2)TiO3-xBaTiO3 doped with 1at. % Fe. The relaxor character of the un-poled material prevents macroscopic aging effects, while in the field-induced ferroelectric phase aging phenomena are similar to those found in lead zirconate titanate or barium titanate. Most prominent aging effects are the development of an internal bias field and the decrease of switchable polarization. These effects are temperature activated, and can be explained in the framework of defect complex reorientation. This picture is further supported by electron paramagnetic resonance spectra indicating the existence of (FeTi ′−VO ••)• defect complexes in the Fe-doped material

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http://scitation.aip.org/content/aip/journal/jap