The origin of ultrahigh piezoelectricity in relaxor-ferroelectric solid solution crystals.
The origin of ultrahigh piezoelectricity in relaxor-ferroelectric solid solution crystals.
复制标题
弛豫铁电固溶体晶体超高压的起源
DOI：
10.1038/ncomms13807
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发表时间：
2016-12-19
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
弛豫型铁电固溶体单晶中压电性的发现是铁电材料研究的一个重大突破。弛豫铁电固溶体的一个关键特征是存在与正常铁电畴共存的极性纳米区域，即纳米级不均匀性。尽管经过了二十年的广泛研究，极性纳米区域对弛豫铁电体的潜在压电性能的贡献尚未建立。在这里，我们定量表征的极性nanoregions的弛豫铁电晶体的介电/压电响应的低温实验和相场模拟相结合的贡献。极性纳米区域对室温介电和压电性能的贡献在50- 80%的范围内。提出了一种介观机制来揭示弛豫铁电体中高压电性的起源，其中在铁电基体中排列的极性纳米区域可以促进极化旋转。该机制强调了局域结构对铁电材料宏观性能的关键作用。
The discovery of ultrahigh piezoelectricity in relaxor-ferroelectric solid solution single crystals is a breakthrough in ferroelectric materials. A key signature of relaxor-ferroelectric solid solutions is the existence of polar nanoregions, a nanoscale inhomogeneity, that coexist with normal ferroelectric domains. Despite two decades of extensive studies, the contribution of polar nanoregions to the underlying piezoelectric properties of relaxor ferroelectrics has yet to be established. Here we quantitatively characterize the contribution of polar nanoregions to the dielectric/piezoelectric responses of relaxor-ferroelectric crystals using a combination of cryogenic experiments and phase-field simulations. The contribution of polar nanoregions to the room-temperature dielectric and piezoelectric properties is in the range of 50–80%. A mesoscale mechanism is proposed to reveal the origin of the high piezoelectricity in relaxor ferroelectrics, where the polar nanoregions aligned in a ferroelectric matrix can facilitate polarization rotation. This mechanism emphasizes the critical role of local structure on the macroscopic properties of ferroelectric materials.
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DOI：
10.1143/jjap.21.1298
发表时间：
1982-01-01
期刊：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS
影响因子：
--
作者：
KUWATA, J;UCHINO, K;NOMURA, S
通讯作者：
NOMURA, S
影响因子：
0.8
作者：
CROSS, LE
通讯作者：
CROSS, LE
影响因子：
64.8
作者：
Kutnjak, Z.;Petzelt, J.;Blinc, R.
通讯作者：
Blinc, R.
影响因子：
3.7
作者：
Kamba, S;Porokhonskyy, V;Randall, CA
通讯作者：
Randall, CA
影响因子：
13.6
作者：
Manley ME;Abernathy DL;Sahul R;Parshall DE;Lynn JW;Christianson AD;Stonaha PJ;Specht ED;Budai JD
通讯作者：
Budai JD