StructuraltransitionsofSWNTfilledwithC60underhighpressure

被引：0

作者：

邹永刚 ^{[1
]}

徐莉 ^{[1
]}

田锟 ^{[1
]}

张贺 ^{[1
]}

马晓辉 ^{[1
]}

姚明光 ^{[2
]}

机构：

[1] National Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology

[2] State Key Laboratory of Superhard Materials, Jilin University

来源：

Chinese Physics B | 2016年 / 25卷 / 05期

关键词：

carbon nanotubes; high pressure; Raman spectra;

D O I：

暂无

中图分类号：

TB383.1 [];

学科分类号：

070205 ; 080501 ; 1406 ;

摘要：

Raman spectra of C60 filled single-walled carbon nanotubes(C60@SWNTs) with diameters of 1.3–1.5 nm have been studied under high pressure. A plateau in the pressure dependence of the G-band frequency at around 10 GPa was observed in both experiments with 514 nm and 830 nm excitation lasers, which is similar to the high pressure behaviors of pristine SWNTs. This structural transition has been assigned to the transformation into a peanut-like structure of the nanotubes. At pressure below 2 GPa, no obvious Raman signature related to the structural transition of nanotubes was observed, unlike what has been reported for C70 filled nanotubes. We discussed this point in terms of the arrangement differences of C60 and C70molecules inside the nanotubes. At higher pressure up to 15 GPa, a graphite-like pressure evolution was observed in our C60@SWNTs.

引用

页码：242 / 245

页数：4

共 2 条

[1] 紫外激光和压力共同作用下C60-peapod的聚合相变研究 [J].

邹永刚 ;

刘冰冰 ;

姚明光 ;

侯元元 ;

王霖 ;

于世丹 ;

王鹏 ;

崔田 ;

邹广田 ;

BSundqvist ;

王国瑞 ;

刘益春 .

物理学报, 2007, (09) :5172-5175

[2]

Standing or lying C 70 s encapsulated in carbon nanotubes with different diameters[J] . Lunhui Guan,Huanjun Li,Zujin Shi,Liping You,Zhennan Gu.Solid State Communications . 2004 (5)

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