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

journal contribution
posted on 01.02.2014, 00:00 authored by J Lu, Q Ren, L Sun, J Yu, Ying (Ian) ChenYing (Ian) Chen, X Shen, Z Chen
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. © 2014 The Japan Society of Applied Physics.

History

Journal

Applied Physics Express

Volume

7

Issue

2

Pagination

1 - 4

Publisher

Japan Society of Applied Physics

Location

Tokyo, Japan

ISSN

1882-0786

eISSN

1882-0786

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2014, Japan Society of Applied Physics