First-principles calculation of electroacoustic properties of wurtzite (Al,Sc)N

First-principles calculation of electroacoustic properties of wurtzite (Al,Sc)N
复制标题

纤锌矿(Al,Sc)N电声性能的第一性原理计算

DOI:
10.1103/physrevb.103.115204
复制
发表时间:
2020
期刊:
影响因子:
3.7
通讯作者:
Ch. Elsässer
Ch. Elsässer
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
D. F. Urban;O. Ambacher;Ch. Elsässer

文献摘要

参考文献

被引文献

相似文献

本文采用基于密度泛函理论的第一性原理计算方法研究了亚稳纤锌矿结构的氮化钪铝晶体的电声性质。我们提取电声器件设计相关的材料性能数据,即弹性和压电常数的全张量。原子模型的构建和分析的各种Sc浓度%。通过拟合从不同无序原子配置的平均过程中获得的数据,提取的钪浓度的材料特性的函数依赖性。我们给出了一个解释所观察到的弹性软化和异常增加的压电响应作为Sc含量的函数在特定元素的键长和键角的分析。
We study the electroacoustic properties of aluminum scandium nitride crystalswith the metastable wurtzite structure by means of first-principles calculations based on density functional theory. We extract the material property data relevant for electroacoustic device design, namely, the full tensors of elastic and piezoelectric constants. Atomistic models were constructed and analyzed for a variety of Sc concentrations%. The functional dependence of the material properties on the scandium concentration was extracted by fitting the data obtained from an averaging procedure for different disordered atomic configurations. We give an explanation of the observed elastic softening and the extraordinary increase in piezoelectric response as a function of Sc content in terms of an element-specific analysis of bond lengths and bond angles.
DOI: 10.1002/pssa.201700559
发表时间: 2018-05-09
影响因子: 2
作者:
Lu, Yuan;Reusch, Markus;Zukauskaite, Agne
通讯作者: Zukauskaite, Agne
DOI: 10.1063/1.5094611
发表时间: 2019-08-21
影响因子: 3.2
作者:
Kurz, Nicolas;Ding, Anli;Ambacher, Oliver
通讯作者: Ambacher, Oliver
DOI: 10.1063/1.4953856
发表时间: 2016-06-01
期刊: AIP ADVANCES
影响因子: 1.6
作者:
Momida, Hiroyoshi;Teshigahara, Akihiko;Oguchi, Tamio
通讯作者: Oguchi, Tamio
DOI: 10.1063/1.4848036
发表时间: 2013-12-28
影响因子: 3.2
作者:
Zhang, S.;Fu, W. Y.;Moram, M. A.
通讯作者: Moram, M. A.
DOI: 10.1103/physrevb.56.r10024
发表时间: 1997-10-15
期刊: PHYSICAL REVIEW B
影响因子: 3.7
作者:
Bernardini, F;Fiorentini, V;Vanderbilt, D
通讯作者: Vanderbilt, D