铟掺入对铌镁酸铅钛酸铅单晶声表面波的影响
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黑龙江省教育厅科学技术研究基金资助项目(12523002)

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The Effect of Adding Indium on Surface Acoustic Wave Properties of Lead Magnesium Niobatelead Titanate Crystals
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    摘要:

    近十几年,新型弛豫铁电单晶铌镁酸铅钛酸铅受到广泛关注。但温度稳定性稍差限制了其应用范围。为了进一步改善铌镁酸铅钛酸铅单晶的声表面波性能,文章利用部分波法研究了铟元素掺入对铌镁酸铅钛酸铅晶体声表面波性能的影响。结果表明,铟的掺入在提高晶体稳定性的同时,部分减低了晶体的声表面波机电耦合系数,略提高了晶体的声表面波相速度,减小了能流角。综合来看,其机电耦合系数仍明显高于传统压电材料,而声表面波相速度则明显低于传统压电材料。这有利于增加声表面波器件的带宽并减小器件尺寸。因此铌铟酸铅-铌镁酸铅-钛酸铅单晶具有较优异的声表面波性能和较好的温度稳定性。

    Abstract:

    Relaxorbased ferroelectric single crystals lead magnesium niobatelead titanate and lead zinc niobatelead titanat have attracted considerable attention in the past several years. But poor temperature stability limits its applications. The appropriate adding indium can effectively improve the surface acoustic wave properties of relaxorbased ferroelectric single crystals. In order to further improve surface acoustic wave performance of lead magnesium niobatelead titanate single crystal, the effects of adding indium on surface acoustic wave properties of single crystals were preliminary studied. The surface acoustic wave properties of lead indium niobatelead magnesium niobatelead titanat single crystals were studied by contrasting with lead magnesium niobatelead titanate single crystals . The results found that adding indium can be helpful to enhance the temperature stability, which depresses the surface acoustic wave performance of lead indium niobatelead magnesium niobatelead titanat single crystals. But overall, the surface acoustic wave propagation properties of lead indium niobatelead magnesium niobatelead titanat single crystals are even better than that of the traditional piezoelectric materials.

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李秀明,吴广涛,杨瑞,徐权,刘永皓,曹丰慧,张锐.铟掺入对铌镁酸铅钛酸铅单晶声表面波的影响[J].压电与声光,2015,37(4):613-616. LI Xiuming, WU Guangtao, YANG Rui, XU Quan, LIU Yonghao, CAO Fenghui, ZHANG Rui. The Effect of Adding Indium on Surface Acoustic Wave Properties of Lead Magnesium Niobatelead Titanate Crystals[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

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  • 在线发布日期: 2015-07-22
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