Raman spectroscopy of pressure-induced amorphous boron carbide

X. Q. Yan; W. J. Li; T. Goto; M. W. Chen

doi:10.1063/1.2189826

Raman spectroscopy of pressure-induced amorphous boron carbide

X. Q. Yan, W. J. Li, T. Goto, M. W. Chen

Materials Processing and Characterization Division

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

93 Citations (Scopus)

Abstract

We report low- and high-temperature Raman spectroscopy of pressure-induced amorphous boron carbide (a- B4 C). Coarsening of carbon clusters in a- B4 C was characterized during heating, whereas unusual temperature coefficients of a- B4 C Raman peak shifts were observed during cooling. These results experimentally evidence that the amorphization of B4 C is associated with the destruction of the C-B-C chains and a- B4 C is composed of s p2 carbon aromatic rings and boron clusters. This disordered structure with relatively weak carbon s p2 bonds is believed to be responsible for the loss of B4 C shear strength at high pressures.

Original language	English
Article number	131905
Journal	Applied Physics Letters
Volume	88
Issue number	13
DOIs	https://doi.org/10.1063/1.2189826
Publication status	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.2189826

Fingerprint Dive into the research topics of 'Raman spectroscopy of pressure-induced amorphous boron carbide'. Together they form a unique fingerprint.

Cite this

@article{ae4c4b4bbf0a4ddaabd09bee2292ff05,

title = "Raman spectroscopy of pressure-induced amorphous boron carbide",

abstract = "We report low- and high-temperature Raman spectroscopy of pressure-induced amorphous boron carbide (a- B4 C). Coarsening of carbon clusters in a- B4 C was characterized during heating, whereas unusual temperature coefficients of a- B4 C Raman peak shifts were observed during cooling. These results experimentally evidence that the amorphization of B4 C is associated with the destruction of the C-B-C chains and a- B4 C is composed of s p2 carbon aromatic rings and boron clusters. This disordered structure with relatively weak carbon s p2 bonds is believed to be responsible for the loss of B4 C shear strength at high pressures.",

author = "Yan, {X. Q.} and Li, {W. J.} and T. Goto and Chen, {M. W.}",

note = "Funding Information: The authors would like to thank Dr. James McCauley for constructive discussion. This work was sponsored by Japan Society for the Promotion of Science. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2006",

doi = "10.1063/1.2189826",

language = "English",

volume = "88",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "13",

}

TY - JOUR

T1 - Raman spectroscopy of pressure-induced amorphous boron carbide

AU - Yan, X. Q.

AU - Li, W. J.

AU - Goto, T.

AU - Chen, M. W.

N1 - Funding Information: The authors would like to thank Dr. James McCauley for constructive discussion. This work was sponsored by Japan Society for the Promotion of Science. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2006

Y1 - 2006

N2 - We report low- and high-temperature Raman spectroscopy of pressure-induced amorphous boron carbide (a- B4 C). Coarsening of carbon clusters in a- B4 C was characterized during heating, whereas unusual temperature coefficients of a- B4 C Raman peak shifts were observed during cooling. These results experimentally evidence that the amorphization of B4 C is associated with the destruction of the C-B-C chains and a- B4 C is composed of s p2 carbon aromatic rings and boron clusters. This disordered structure with relatively weak carbon s p2 bonds is believed to be responsible for the loss of B4 C shear strength at high pressures.

AB - We report low- and high-temperature Raman spectroscopy of pressure-induced amorphous boron carbide (a- B4 C). Coarsening of carbon clusters in a- B4 C was characterized during heating, whereas unusual temperature coefficients of a- B4 C Raman peak shifts were observed during cooling. These results experimentally evidence that the amorphization of B4 C is associated with the destruction of the C-B-C chains and a- B4 C is composed of s p2 carbon aromatic rings and boron clusters. This disordered structure with relatively weak carbon s p2 bonds is believed to be responsible for the loss of B4 C shear strength at high pressures.

UR - http://www.scopus.com/inward/record.url?scp=33645517442&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645517442&partnerID=8YFLogxK

U2 - 10.1063/1.2189826

DO - 10.1063/1.2189826

M3 - Article

AN - SCOPUS:33645517442

VL - 88

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 13

M1 - 131905

ER -

Raman spectroscopy of pressure-induced amorphous boron carbide

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this