在多铁复合材料半导体结构中切割水平波
Lei Yang1, Enrico Zappino2, Erasmo Carrera2
1Smart Materials and Advanced Structures Laboratory, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China; School of Intelligent Manufacturing, Taizhou University, Taizhou 318000, China; Mul2 Group, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin 10129, Italy.
Ultrasonics
|March 9, 2024
概括
本研究研究了多铁复合半导体中的剪切水平 (SH) 波传播. 结果显示,电子度显著影响波特征和波场,有助于设计新型设备.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 声学 声学 在声学上
背景情况:
- 压电半导体 (PSs) 具有同时的压电和半导体性能.
- 将压磁性 (PM) 材料添加到PS中,可以创建具有磁电半导体 (MES) 合的多铁复合材料.
- 了解这些复杂结构中的波传播对于设备应用至关重要.
研究的目的:
- 在多铁复合半导体结构中分析研究剪切水平 (SH) 波传播特征.
- 探索各种参数对波速和衰减的影响.
- 分析电机场在复合材料层中的分布.
主要方法:
- 使用三维宏观理论对PS和PM材料的分散方程的推导.
- 在一个复合结构中波传播的分析研究,其中一个n型PS薄板与PM基板结合在一起.
- 对相速和衰减进行数值分析,考虑载体密度,覆盖厚度和材料特性.
主要成果:
- 最初的电子度 (n0) 显著影响移位,应力,电潜和极化,但不会影响磁潜或流量密度.
- 压电常数 (e15) 和压磁常数 (f15) 对SH波传播和磁电位分布具有不同的影响.
- 该研究系统地分析了材料特性和结构参数对波浪行为的影响.
结论:
- 这些发现为了解PS-PM多铁复合材料中的SH波传播提供了理论基础.
- 结果为使用这些材料的表面声波 (SAW) 设备的设计和优化提供了宝贵的见解.
- 这项研究有助于开发具有合物理性质的先进功能材料.
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