Preparation of Enviromental-frienfdly Piezomaterials with Ultrahigh Property by Nanodomain Engineering

在这项研究中，图案化电极被用来诱导更精细的工程化域结构，其域大小为3 pm极化处理在134.0℃下进行，电场低于6kV/cm，以抑制带有光刻胶的图案化电极的烧毁。结果表明，在31谐振腔中诱导出从3到8-9 pm的梯度域尺寸。到目前为止，当使用全平面电极时，最小结构域Ci7P被限制在5 pm然而，使用图案化电极，成功地在谐振器中诱导出了小于5 pm的微区。在-243.2 pC/N下测得的CHI几乎是3μm谐振器预期d31-337.7 pC/N的70%，这是由于外加电场低于6 kV/cm所致。这一问题可以通过开发无光刻胶的图案化电极来解决。在未来，开发的图案比3 pm更精细的图案化电极将是prepa…。更多的红色，更高的d31将是一个挑战。此外，用TGG方法成功地制备了[110]取向的Ba1103陶瓷。结果表明，尽管有不同的FM值，SaT103陶瓷仍具有96%以上的高密度。然而，平均粒度在75 PM左右，与Takahashi等人报告的(1.6-2.1 PM)相比，这个尺寸太大了。和Karaki等人。今后，晶向BaT103陶瓷的晶化电导率应低于I PM。为了实现这一点，需要一种不使用模板的新的制备方法。本研究首次获得了d33为788pC/N的BaTICI3陶瓷。这些陶瓷具有工程化的微区结构，平均微区大小为800 nm。DO高于500pC/N的主要原因是这种高的磁区密度。本研究最重要的一点是证实了90°磁区等结构梯度区本质上具有超高的压电性。这个概念是通用的，可以应用于任何铁电材料。利用这一概念，我们可以在未来制备d_(33)为10000 pC/N的超高压电材料。较少

In this study, the patterning electrode was used to induce the finer engineered domain configurations with domain size of 3 pm. The poling treatment was performed at 134.0℃ under electric fields below 6 kV/cm to inhibit the burning of the patterning electrode with photoresist As the results, the gradient domain sizes from 3 to 8-9 pm were induced into the 31 resonator. Up to date, when the whole plane electrode was used, the minimum domain Ci7P was limited to 5 pm. However, using patterning electrode, the smaller domain size than 5 pm was successfully induced into the resonator. The chi was measured at -243.2 pC/N, and this value was almost 70% of the expected d31 of -337.7 pC/N for the resonator with domain size of 3 μm. This difference was originated from lower applied electric field below 6 kV/cm. This problem can be solved by development of the patterning electrode without photoresist. In the future, the developed patterning electrode with much finer pattern than 3 pm will be prepa … More red, and much higher d_31 will be challenged.Moreover, [110]-oriented Ba1103 ceramics were successfully prepared by the TGG method. It was revealed that the SaT103 ceramics had a high density of over 96% despite various Fm values. However; the average grain sizes were around 75 pm, and this size was too large compared with those (1.6-2.1 pm) reported by Takahashi, et al. and Karaki, et al. In the future, the grain ea should be below I pm for grain-oriented BaT103 ceramics. To achieve this, a new preparation method without using a template is required. In this study, BaTICI3 ceramics with a d_33 of 788 pC/N were first obtained. These ceramics had the engineered domain configuration with an average domain size of 800 run. This high domain wall density was the origin of the do higher than 500 pC/N. The most important point in this study is the confirmation that the structure gradient region such as the 90° domain wall region had an ultrahigh piezoelectric property intrinsically. This concept is universal, and can be applied to any ferroelectric materials. Using this concept, we can prepare ultrahigh-piezoelethric materials with a d_33 of 10,000 pC/N in the future. Less