期刊
MATERIALS CHEMISTRY FRONTIERS
卷 3, 期 10, 页码 2077-2082出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9qm00427k
关键词
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资金
- National Natural Science Foundation of China [21673038, 21771037]
- Natural Science Foundation of Jiangsu Province (JSNSF) [BK20170659]
- research fund of SEU
Phase transition materials are a class of smart materials with special optoelectronic properties. In particular, high symmetry has proven to be the most advantageous feature for thin film devices. However, phase transition design, particularly with high symmetry, is a huge challenge. Herein, based on the advanced molecule reported by us, [(CH3)(3)N(CH2)(2)Cl](2)[ZnCl4] (1) was verified to be a phase transition dielectric crystal with an infrequent large leap symmetry breaking from P2(1)/c to I4(1)/a at 333 K. The dielectric value exhibited a remarkable step-like enlargement around T-C, suggesting a standard and visual low-high interchange of dielectric switching. The existence of dielectric switching properties triggered by a thermal stimulus is intrinsically induced by the anionic and cationic order-disorder motion. It creates a little anisotropy along all axial directions in numerical values and cardinal numbers, which is very beneficial for the cultivation of large-size crystals and the fabrication of corresponding devices.
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