Temperature-dependent Raman spectra of bamboo-like boron nitride nanotubes

Jian Lu; Qijun Ren; Liaoxin Sun; Jun Yu; Ying Chen; Xuechu Shen; Zhanghai Chen

doi:10.7567/APEX.7.022401

Temperature-dependent Raman spectra of bamboo-like boron nitride nanotubes

Jian Lu, Qijun Ren^*, Liaoxin Sun, Jun Yu, Ying Chen, Xuechu Shen, Zhanghai Chen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Phonon properties of boron nitride nanotubes (BNNTs) were investigated using Raman spectroscopy at different temperatures and new sp³- bonded BN vibrations were identified. The Raman peak of the E_2g mode of BNNTs is found to be downshifted and broadened compared to that of hexagonal BN at the same temperature. By increasing the temperature, the energy of the E_2g mode and the sp³-bonding mode are downshifted, with the temperature coefficients being -0.010 and -0.069cm^-1/K, respectively. We attribute this downshifting to anharmonic effects as well as the elongation of the B-N bond in BNNT structures with increasing temperature.

Original language	English
Article number	022401
Journal	Applied Physics Express
Volume	7
Issue number	2
DOIs	https://doi.org/10.7567/APEX.7.022401
Publication status	Published - Feb 2014

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title = "Temperature-dependent Raman spectra of bamboo-like boron nitride nanotubes",

abstract = "Phonon properties of boron nitride nanotubes (BNNTs) were investigated using Raman spectroscopy at different temperatures and new sp3- bonded BN vibrations were identified. The Raman peak of the E2g mode of BNNTs is found to be downshifted and broadened compared to that of hexagonal BN at the same temperature. By increasing the temperature, the energy of the E2g mode and the sp3-bonding mode are downshifted, with the temperature coefficients being -0.010 and -0.069cm-1/K, respectively. We attribute this downshifting to anharmonic effects as well as the elongation of the B-N bond in BNNT structures with increasing temperature.",

author = "Jian Lu and Qijun Ren and Liaoxin Sun and Jun Yu and Ying Chen and Xuechu Shen and Zhanghai Chen",

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T1 - Temperature-dependent Raman spectra of bamboo-like boron nitride nanotubes

AU - Lu, Jian

AU - Ren, Qijun

AU - Sun, Liaoxin

AU - Yu, Jun

AU - Chen, Ying

AU - Shen, Xuechu

AU - Chen, Zhanghai

PY - 2014/2

Y1 - 2014/2

N2 - Phonon properties of boron nitride nanotubes (BNNTs) were investigated using Raman spectroscopy at different temperatures and new sp3- bonded BN vibrations were identified. The Raman peak of the E2g mode of BNNTs is found to be downshifted and broadened compared to that of hexagonal BN at the same temperature. By increasing the temperature, the energy of the E2g mode and the sp3-bonding mode are downshifted, with the temperature coefficients being -0.010 and -0.069cm-1/K, respectively. We attribute this downshifting to anharmonic effects as well as the elongation of the B-N bond in BNNT structures with increasing temperature.

AB - Phonon properties of boron nitride nanotubes (BNNTs) were investigated using Raman spectroscopy at different temperatures and new sp3- bonded BN vibrations were identified. The Raman peak of the E2g mode of BNNTs is found to be downshifted and broadened compared to that of hexagonal BN at the same temperature. By increasing the temperature, the energy of the E2g mode and the sp3-bonding mode are downshifted, with the temperature coefficients being -0.010 and -0.069cm-1/K, respectively. We attribute this downshifting to anharmonic effects as well as the elongation of the B-N bond in BNNT structures with increasing temperature.

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DO - 10.7567/APEX.7.022401

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JO - Applied Physics Express

JF - Applied Physics Express

IS - 2

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ER -

Temperature-dependent Raman spectra of bamboo-like boron nitride nanotubes

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