Polar precursor ordering in BaTiO3 detected by resonant piezoelectric spectroscopy
Polar precursor ordering in BaTiO3 detected by resonant piezoelectric spectroscopy
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DOI：
10.1063/1.4823576
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发表时间：
2013-09-30
影响因子：
4
通讯作者：
Salje, Ekhard K. H.
中科院分区：
文献类型：
--
作者：
Aktas, Oktay;Carpenter, Michael A.;Salje, Ekhard K. H.
介绍了一种用于检测铁电和多铁性材料中极性前驱体效应的实验方法--共振压电谱（RPS）。RPS基于通过样品中的压电效应激发弹性波。由于这些波的强度通过机械共振被显著放大，RPS对极性纳米结构的发展非常敏感。使用RPS，我们确定在钛酸钡作为在立方相的前体的极性纳米结构。结果是相容的极性花呢结构，坚持到613 K。这个温度比以前报道的要高得多。(C)2013 AIP Publishing LLC.
An experimental method, Resonant Piezoelectric Spectroscopy (RPS), is introduced for the detection of polar precursor effects in ferroelectric and multiferroic materials. RPS is based on the excitation of elastic waves through the piezoelectric effect in a sample. As the intensity of these waves is significantly amplified through mechanical resonances, RPS is very sensitive to the development of polar nanostructures. Using RPS, we identify polar nanostructures in BaTiO3 as a precursor in the cubic phase. Results are compatible with polar tweed structures which persist up to 613 K. This temperature is much higher than previously reported. (C) 2013 AIP Publishing LLC.