Preparation of YbAlN piezoelectric thin film by sputtering and influence of Yb concentration on properties and crystal structure
Preparation of YbAlN piezoelectric thin film by sputtering and influence of Yb concentration on properties and crystal structure
复制标题
溅射法制备YbAlN压电薄膜及Yb浓度对性能和晶体结构的影响
DOI:
10.1016/j.ceramint.2021.02.177
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发表时间:
2021
影响因子:
5.2
通讯作者:
Akiyama Morito
中科院分区:
文献类型:
--
作者:
Uehara Masato;Amano Yuki;Anggraini Sri Ayu;Hirata Kenji;Yamada Hiroshi;Akiyama Morito
Aluminum nitride (AlN) is a key material for piezoelectric micro-electromechanical systems (MEMS). Since the discovery of the increase in AlN piezo performance by scandium (Sc) doping, many groups have investigated other effective dopants. However, another effective single dopant has not yet been experimentally demonstrated, although potential effectiveness has been indicated by theoretical calculations. In this study, we propose ytterbium (Yb) as an effective dopant. The sputtering conditions for YbxAl1− xN films were optimized by design of experiments (DoE). Consequently, high-quality YbxAl1− xN films were obtained. YbxAl1− xN withxvalues ranging from 0 to 0.37 demonstrate good piezo response. A maximumd33of ~12 pC/N, which is approximately twice the value of non-doped AlN, is achieved. According to crystallographic analysis using X-ray diffraction, the influence of Yb concentration on the crystal structure was similar to that of Sc with differences observed at high Yb concentration.
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DOI:
--
发表时间:
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期刊:
Resources and Technology
影响因子:
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DOI:
--
发表时间:
2020
期刊:
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