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Temperature-tunable multiple dielectric switch in hybrid rare-earth perovskites regulated by hierarchical guest dynamics, lanthanide contraction and doping
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2024-07-08 , DOI: 10.1039/d4qi01243g Hui Xiao 1 , Lin-Yong Sheng 1 , Shuai Chen 2 , Rui-Kang Huang 3, 4 , Cheng-Hui Zeng 1 , Zi-Yi Du 1 , Chun-Ting He 1 , Wei-Xiong Zhang 2 , Xiao-Ming Chen 2
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2024-07-08 , DOI: 10.1039/d4qi01243g Hui Xiao 1 , Lin-Yong Sheng 1 , Shuai Chen 2 , Rui-Kang Huang 3, 4 , Cheng-Hui Zeng 1 , Zi-Yi Du 1 , Chun-Ting He 1 , Wei-Xiong Zhang 2 , Xiao-Ming Chen 2
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Dielectric switches play an important role in electrical and electronic devices. Here we report a unique class of cage-like hybrid rare-earth perovskites, (i-PrNHMe2)2[RbLn(NO3)6] (Ln = La, Ce, Nd or Sm), capable of functioning as temperature-responsive multiple dielectric switches. The strategic incorporation of a conformationally flexible sphere-like guest (i-PrNHMe2)+ cation into the cage-like perovskite framework is in favor of the occurrence of hierarchical guest dynamics accompanied by stepwise phase transitions, leading to seldom observed multiple dielectric switching of “Low ↔ High ↔ Low ↔ High” upon heating. Furthermore, the utilizing of lanthanide contraction or rare-earth doping allows for fine tuning of the switching temperature. In addition, multiaxial ferroelasticity is found in these perovskites. Overall, this study provides a good approach for the design of temperature-tunable multiple dielectric switches.
中文翻译：
混合稀土钙钛矿中的温度可调多重介电开关由分层客体动力学、镧系元素收缩和掺杂调节
介电开关在电气和电子设备中发挥着重要作用。在这里，我们报告了一类独特的笼状杂化稀土钙钛矿，(i-PrNHMe 2 ) 2 [RbLn(NO 3 ) 6 ]（Ln = La、Ce、Nd 或 Sm），能够用作温度响应型多重介电开关。将构象灵活的球状客体 (i-PrNHMe 2 ) + 阳离子战略性地纳入笼状钙钛矿框架中，有利于分层客体动力学的发生，并伴随着逐步相变，导致加热时很少观察到“低↔高↔低↔高”的多重介电切换。此外，利用镧系元素收缩或稀土掺杂可以微调转换温度。此外，这些钙钛矿还具有多轴铁弹性。总的来说，这项研究为温度可调的多重介电开关的设计提供了一种很好的方法。
更新日期：2024-07-11
中文翻译：
混合稀土钙钛矿中的温度可调多重介电开关由分层客体动力学、镧系元素收缩和掺杂调节
介电开关在电气和电子设备中发挥着重要作用。在这里，我们报告了一类独特的笼状杂化稀土钙钛矿，(i-PrNHMe 2 ) 2 [RbLn(NO 3 ) 6 ]（Ln = La、Ce、Nd 或 Sm），能够用作温度响应型多重介电开关。将构象灵活的球状客体 (i-PrNHMe 2 ) + 阳离子战略性地纳入笼状钙钛矿框架中，有利于分层客体动力学的发生，并伴随着逐步相变，导致加热时很少观察到“低↔高↔低↔高”的多重介电切换。此外，利用镧系元素收缩或稀土掺杂可以微调转换温度。此外，这些钙钛矿还具有多轴铁弹性。总的来说，这项研究为温度可调的多重介电开关的设计提供了一种很好的方法。
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