Comparative Investigation of Passive Voltage Amplification in Ferroelectric-Dielectric Heterostructure

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Archana C M, Bhaskar Awadhiya, Yashwanth Nanjappa
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引用次数: 0

Abstract

This paper investigates the ferroelectric-dielectric heterostructure with a fixed dielectric oxide and different ferroelectric oxides. This study is focused on the enhancement of capacitance, voltage amplification, and negative capacitance stabilization. In the first section of this study, an isolated ferroelectric capacitor with intrinsically unstable negative capacitance is examined for different ferroelectric oxides. To address the concern of instability a dielectric oxide is added in series to the ferroelectric capacitors. This addition raises the heterostructure's total capacitance while stabilizing the negative capacitance. Silicon (Si), Zirconium (Zr), Aluminum (Al), and Strontium (Sr) doped hafnium oxide are used in heterostructure. It is found that the capacitance of Sr doped hafnium oxide is closely matched with the dielectric capacitance, therefore it provides the highest voltage amplification and enhanced capacitance among the other ferroelectric oxide considered.
铁电-电介质异质结构中的无源电压放大比较研究
本文研究了具有固定介电氧化物和不同铁电氧化物的铁电-介电异质结构。本研究的重点是电容增强、电压放大和负电容稳定。在本研究的第一部分,针对不同的铁电氧化物,研究了负电容本质上不稳定的孤立铁电电容器。为了解决不稳定性问题,在铁电电容器中串联添加了电介质氧化物。这种添加提高了异质结构的总电容,同时稳定了负电容。异质结构中使用了硅(Si)、锆(Zr)、铝(Al)和锶(Sr)掺杂的氧化铪。研究发现,掺杂锶的氧化铪的电容与介电电容非常匹配,因此在所考虑的其他铁电氧化物中,掺杂锶的氧化铪具有最高的电压放大能力和增强电容。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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