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arXiv 1212.0366cond-mat.mtrl-sci
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单畴Mn掺杂NBT-6 % BT单晶的高压电系数

High piezoelectric coefficient of single domain Mn-doped NBT-6%BT single crystals

Mael Guennou, Maxim Savinov, Jan Drahokoupil, Haosu Luo, Jirka Hlinka

摘要:

本文报道了掺锰NBT-6%BT单晶的性质研究。我们表明,沿着[001]方向极化可以稳定四方单畴态。对于精心制备的晶体,压电系数d33可以达到570 pC/N。沿非极性方向极化时,晶体表现出铁电畴结构一致的tetraxite微米尺寸的域,所揭示的光学观察和拉曼光谱。多畴晶体具有较低的d33值,[011]和[111]取向晶体分别为225和130 pC/N。这一趋势是从域工程的角度进行评论。

英文摘要:

We report a study of properties of Mn-doped NBT-6%BT single crystals. We show that tetragonal single domain states can be stabilized by poling along a [001] direction. For carefully prepared crystals, the piezoelectric coefficient d33 can reach 570 pC/N. When poled along non-polar directions, the crystals exhibit ferroelectric domain structures consistent with tetragonal micron-sized domains, as revealed by optical observation and Raman spectroscopy. The multidomain crystals have lower d33 values, 225 and 130 pC/N for [011] and [111]-oriented crystals respectively. This trend is commented on from a domain-engineering perspective.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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