PbZrO₃-based antiferroelectric crystals are of great interest in both fundamental and applied research, not only because of the antiferroelectric feature at room temperature but also because of the existence of a peculiar intermediate state at elevated temperatures. Here, we report a detailed description of domain structure change at the temperature-induced antiferroelectric-to-ferroelectric phase transition. A complex process of different types of domains is revealed to appear at different stages of the phase transition. A hierarchical ferroelastic domain structure forms in the stabilized intermediate state, where the dense domain walls show potential impact on the physical properties of the crystal.

中文翻译：

---

PbZr0.98Ti0.02O3单晶中间态的铁弹性畴层次

基于PbZrO ₃的反铁电晶体在基础研究和应用研究中都引起了极大的兴趣，这不仅是因为室温下具有反铁电特性，而且还因为在高温下存在特殊的中间态。在这里，我们报告在温度引起的反铁电到铁电相变时畴结构变化的详细描述。揭示了不同类型域的复杂过程会出现在相变的不同阶段。分层的铁弹性畴结构以稳定的中间状态形成，其中致密的畴壁显示出对晶体物理性质的潜在影响。