Effect of Fe-doping on bending elastic properties of single-crystalline rutile TiO2 nanowires

被引：2

作者：

Liu, Qiong ^{[1
]}

Zhan, Haifei ^{[1
,2
]}

Nie, Yihan ^{[1
]}

Xu, Yanan ^{[1
]}

Zhu, Huaiyong ^{[1
]}

Sun, Ziqi ^{[1
]}

Bell, John ^{[3
]}

Bo, Arinxin ^{[1
]}

Gu, Yuantong ^{[1
,2
]}

机构：

[1] Queensland Univ Technol QUT, Sch Mech Med & Proc Engn, Brisbane, Qld 4001, Australia

[2] Queensland Univ Technol QUT, Ctr Mat Sci, Brisbane, Qld 4001, Australia

[3] Univ Southern Queensland, Ipswich 4300, Australia

来源：

NANOSCALE ADVANCES | 2020年 / 2卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

ROOM-TEMPERATURE FERROMAGNETISM; YOUNGS MODULUS; MECHANICAL-PROPERTIES; OXYGEN VACANCIES; BEHAVIOR;

D O I：

10.1039/d0na00284d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Transition-metal-doping can improve some physical properties of titanium dioxide (TiO2) nanowires (NWs), which leads to important applications in miniature devices. Here, we investigated the elastic moduli of single-crystalline pristine and Fe-doped rutile TiO2 NWs using the three-point bending method, which is taken as a case study of impacts on the elastic properties of TiO2 NWs caused by transition-metal-doping. The Young's modulus of the pristine rutile TiO2 NWs decreases when the cross-sectional area increases (changing from 246 GPa to 93.2 GPa). However, the elastic modulus of the Fe-doped rutile NWs was found to increase with the cross-sectional area (changing from 91.8 GPa to 200 GPa). For NWs with similar geometrical size, the elastic modulus (156.8 GPa) for Fe-doped rutile NWs is 24% smaller than that (194.5 GPa) of the pristine rutile TiO2 NWs. The vacancies generated by Fe-doping are supposed to cause the reduction of elastic modulus of rutile TiO2 NWs. This work provides a fundamental understanding of the effects of transition-metal-doping on the elastic properties of TiO2 NWs.

引用

页码：2800 / 2807

页数：8

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