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Direct Observation of Polarization Rotation in the Monoclinic MB Phase under Electrical Loading
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2021-10-04 , DOI: 10.1021/acs.inorgchem.1c01599 Longlong Fan 1 , Linxing Zhang 2 , Hui Liu 3
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2021-10-04 , DOI: 10.1021/acs.inorgchem.1c01599 Longlong Fan 1 , Linxing Zhang 2 , Hui Liu 3
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The monoclinic phase has received a lot of research because of its importance in explaining the origin of high piezoelectric and ferroelectric performances around the morphotropic phase boundary. In the present study, we have investigated the detailed structural evolution in monoclinic PbZr0.535Ti0.465O3 ferroelectric ceramics induced by an electric field with in situ high-energy synchrotron diffraction combined with two-dimensional (2D) geometry scattering technology. It has been discovered that an electric-field-induced single monoclinic MB phase persists indefinitely. The lattice, unit cell volume, and spontaneous polarization of the monoclinic MB structure exhibit significant and flexible responses to the external electric field, i.e., the spontaneous polarization rotates continuously and the lattice and unit cell volume present a butterfly form under the influence of the bipolar electric field. Particularly, direct experimental evidence demonstrates that the macropolarization of PbZr0.535Ti0.465O3 is derived from the spontaneous polarization rotation rather than domain switching, and its volume expansion plays a vital role in the piezoelectric response.
中文翻译：
电负载下单斜晶系MB相中极化旋转的直接观测
单斜晶相因其在解释同向相界周围的高压电和铁电性能起源方面的重要性而受到了大量研究。在本研究中，我们已在单斜PbZr调查了详细的结构演进0.535钛0.465 ø 3原位高能同步加速器衍射的二维（2D）几何散射技术结合诱导的电场的铁电陶瓷。已经发现电场诱导的单个单斜M B相无限期地持续存在。单斜晶系M B的晶格、晶胞体积和自发极化结构对外部电场表现出显着而灵活的响应，即自发极化不断旋转，晶格和晶胞体积在双极电场的影响下呈现蝶形。特别地，直接实验证据证明，PbZr的macropolarization 0.535钛0.465 ö 3从自发极化旋转而不是域切换导出的，并且它的体积膨胀起着压电响应至关重要的作用。
更新日期：2021-10-18
中文翻译：
电负载下单斜晶系MB相中极化旋转的直接观测
单斜晶相因其在解释同向相界周围的高压电和铁电性能起源方面的重要性而受到了大量研究。在本研究中，我们已在单斜PbZr调查了详细的结构演进0.535钛0.465 ø 3原位高能同步加速器衍射的二维（2D）几何散射技术结合诱导的电场的铁电陶瓷。已经发现电场诱导的单个单斜M B相无限期地持续存在。单斜晶系M B的晶格、晶胞体积和自发极化结构对外部电场表现出显着而灵活的响应，即自发极化不断旋转，晶格和晶胞体积在双极电场的影响下呈现蝶形。特别地，直接实验证据证明，PbZr的macropolarization 0.535钛0.465 ö 3从自发极化旋转而不是域切换导出的，并且它的体积膨胀起着压电响应至关重要的作用。
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