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首页> 外文期刊>Advanced Functional Materials >Versatile and Highly Efficient Controls of Reversible Topotactic Metal-Insulator Transitions through Proton Intercalation
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Versatile and Highly Efficient Controls of Reversible Topotactic Metal-Insulator Transitions through Proton Intercalation

机译：通过质子插层的可逆全能金属-绝缘子转变的多功能和高效控制

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摘要

The ability to tailor a new crystalline structure and associated functionalities with a variety of stimuli is one of the key issues in material design. Developing synthetic routes to functional materials with partially absorbed nonmetallic elements (i.e., hydrogen and nitrogen) can open up more possibilities for preparing novel families of electronically active oxide compounds. Fast and reversible uptake and release of hydrogen in epitaxial ABO(3) manganite films through an adapted low-frequency inductively coupled plasma technology is introduced. Compared with traditional dopants of metallic cations, the plasma-assisted hydrogen implantations not only produce reversibly structural transformations from pristine perovskite (PV) phase to a newly found protonation-driven brownmillerite one but also regulate remarkably different electronic properties driving the material from a ferromagnetic metal to a weakly ferromagnetic insulator for a range of manganite (La1-xSrxMnO3) thin films. Moreover, a reversible perovskite-brownmillerite-perovskite transition is achieved at a relatively low temperature (T <= 350 degrees C), enabling multifunctional modulations for integrated electronic systems. The fast, low-temperature control of structural and electronic properties by the facile hydrogenation/dehydrogenation treatment substantially widens the space for exploring new possibilities of novel properties in proton-based multifunctional materials.
机译：能够通过各种刺激定制新的晶体结构和相关功能的能力是材料设计中的关键问题之一。开发具有部分吸收的非金属元素（即氢和氮）的功能性材料的合成路线可以为制备新型的电子活性氧化物化合物开辟更多的可能性。介绍了通过自适应低频感应耦合等离子体技术在外延ABO（3）锰矿薄膜中快速且可逆地吸收和释放氢的方法。与传统的金属阳离子掺杂剂相比，等离子体辅助的氢注入不仅能从原始钙钛矿（PV）相向新发现的由质子化驱动的褐铁矿产生可逆的结构转变，而且还能调节显着不同的电子性质，从而从铁磁金属中驱动材料应用于一系列锰（La1-xSrxMnO3）薄膜的弱铁磁绝缘体。此外，在相对较低的温度（T <= 350摄氏度）下实现了可逆的钙钛矿-棕色钙钛矿-钙钛矿过渡，从而实现了集成电子系统的多功能调制。通过便捷的加氢/脱氢处理，可快速，低温地控制结构和电子特性，从而大大拓宽了探索质子基多功能材料中新特性新可能性的空间。

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