Role of the Pressure Transmitting Medium for the Pressure Effects in Single-Walled Carbon Nanotubes

被引：20

作者：

Abouelsayed, A. ^{[1
]}

Thirunavukkuarasu, K. ^{[1
]}

Hennrich, F. ^{[2
]}

Kuntscher, C. A. ^{[1
]}

机构：

[1] Univ Augsburg, D-86159 Augsburg, Germany

[2] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 10期

关键词：

OPTICAL-ABSORPTION SPECTRA; ELECTRONIC-PROPERTIES; PURIFICATION; DEPENDENCE;

D O I：

10.1021/jp100429y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present the pressure-dependent infrared absorbance spectra of unoriented single-walled cat-boil nanotube films for pressures Lip to 8 GPa. Various pressure transmitting media (helium, argon, CsI, and alcohol mixture) were employed to verify the influence of the pressure medium on the observed pressure effects. For all pressure transmitting media, a pressure-induced redshift of the absorption bands is observed, with all anomaly at the critical pressure P-c = 2-3 GPa. This anomaly can be attributed to the circular-to-oval structural phase transition. The pressure transmitting medium Only affects the results quantitatively, namely, the value of P-c and the broadening of the bands.

引用

页码：4424 / 4428

页数：5

共 36 条

[1] Pressure-induced phenomena in single-walled carbon nanotubes probed by infrared spectroscopy [J].