Domain structure often has significant influences on both piezoelectric properties and piezoelectric temperature stability of a ferroelectric ceramic. In-depth studies on the characters of domain structure should be helpful for the better understanding of piezoelectric performance. In this work, the evolution of domain structure in large-d₃₃ 0.96(K_0.48Na_0.52)(Nb_0.96Sb_0.04)O₃−0.04(Bi_0.50Na_0.50)ZrO₃ ceramics with poling and temperature was systematically investigated via comparing the various domain patterns that are obtained by acid-etching. It was found that domain structure changes greatly upon poling and varies largely with temperature. Complex domain patterns consisting of long narrow parallel stripes or herringbone structure separated by 180°-domain boundaries are observed in the unpoled ceramics at room temperature. Domain patterns become less complicated upon poling, due to the collective polarization reversals of parallel-stripe domain clusters and banded fine-stripe domain segments. Parallel stripes and herringbone bands become much wider upon poling, as some narrow stripes and herringbone bands coalesce into broad ones, respectively. Hierarchical domain structure is commonly seen in the domain patterns acid-etched at room temperature, but is less frequently recognized at elevated temperatures. Schematic models of domain configurations were proposed to explain the domain structure and its evolution with poling.

畴结构通常对铁电陶瓷的压电性能和压电温度稳定性都有显着影响。对畴结构特征的深入研究应该有助于更好地理解压电性能。在这项工作中，通过系统地研究了大d ₃₃ 0.96(K _0.48 Na _0.52 )(Nb _0.96 Sb _0.04 )O ₃ -0.04(Bi _0.50 Na _0.50 )ZrO ₃陶瓷中畴结构的演变，通过比较通过酸蚀刻获得的各种域图案。发现域结构在极化时发生很大变化，并且随温度变化很大。在室温下在未极化的陶瓷中观察到由长而窄的平行条纹或人字形结构组成的复杂域图案，由 180° 域边界隔开。由于平行条纹域簇和带状细条纹域段的集体极化反转，极化时域模式变得不那么复杂。平行条纹和人字带在极化时变得更宽，因为一些窄条纹和人字带分别合并为宽条纹。分层域结构在室温下酸蚀刻的域图案中很常见，但在高温下不太常见。