Lead-free high-strain single-crystal piezoelectrics in the alkaline-bismuth-titanate perovskite family

被引：373

作者：

Chiang, YM ^{[1
]}

Farrey, GW ^{[1
]}

Soukhojak, AN ^{[1
]}

机构：

[1] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 73卷 / 25期

关键词：

D O I：

10.1063/1.122862

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Doped alkaline-bismuth-titanate perovskite single crystals have been grown in ferroelectric phases with high piezoelectric actuation. Rhombohedral-phase Na1/2Bi1/2TiO3-BaTiO3 crystals exhibit up to 0.25% free strain with low hysteresis along the cubic [001] direction (d(33) similar to 450 pC/N). Tetragonal phase crystals exhibit free strains as high as 0.85% with greater hysteresis characteristic of domain switching; low field d(33) exceeds 500 pC/N. Strain energy densities exceed those of optimized polycrystalline lead perovskites, and actuation capability is retained at compressive stresses >100 MPa. (C) 1998 American Institute of Physics. [S0003-6951(98)02749-1].

引用

页码：3683 / 3685

页数：3

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