Nanoscale Ferroelectric and Piezoelectric Properties of Sb2S3 Nanowire Arrays

被引：65

作者：

Varghese, Justin ^{[1
,2
,3
]}

Barth, Sven ^{[2
,3
,4
]}

Keeney, Lynette ^{[1
]}

Whatmore, Roger W. ^{[1
]}

Holmes, Justin D. ^{[1
,2
,3
]}

机构：

[1] Univ Coll Cork, Tyndall Natl Inst, Cork, Ireland

[2] Univ Coll Cork, Dept Chem, Mat Chem & Anal Grp, Cork, Ireland

[3] Trinity Coll Dublin, CRANN, Dublin 2, Ireland

[4] Vienna Univ Technol, Inst Mat Chem, A-1060 Vienna, Austria

来源：

NANO LETTERS | 2012年 / 12卷 / 02期

基金：

爱尔兰科学基金会;

关键词：

Nanowires; Sb2S3; template; piezoelectric; ferroelectric; PFM; PHASE-TRANSITIONS; SINGLE-CRYSTALS; NANOTUBES; PIEZORESPONSE; SPECTROSCOPY; TECHNOLOGY; DENSITY; FUTURE; SIZE;

D O I：

10.1021/nl2039106

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the first observation of piezoelectricity and ferroelectricity in individual Sb2S3 nanowires embedded in anodic alumina templates. Switching spectroscopy-piezoresponse force microscopy (SS-PFM) measurements demonstrate that individual, c-axis-oriented Sb2S3 nanowires exhibit ferroelectric as well as piezoelectric switching behavior. Sb2S3 nanowires with nominal diameters of 200 and 100 nm showed d(33(eff)) values around 2 pm V-1, while the piezo coefficient obtained for SO nm diameter nanowires was relatively low at around 0.8 pm V-1. A spontaneous polarization (P-s) of approximately 1.8 mu C cm(-2) was observed in the 200 and. 100 nm Sb2S3 nanowires, which is a 100% enhancement when compared to bulk Sb2S3 and is probably due to the defect-free, single-crystalline nature of the nanowires synthesized. The 180 degrees ferroelectric monodomains observed in Sb2S3 nanowires were due to uniform polarization alignment along the polar c-axis.

引用

页码：868 / 872

页数：5

共 41 条

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