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Structural Stability of Boron Carbide under Pressure Proven by Spectroscopic Studies up to 73 GPa
Author(s) -
Chuvashova Irina,
Gasharova Biliana,
Mathis YvesLaurent,
Dubrovinsky Leonid,
Dubrovinskaia Natalia
Publication year - 2017
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201700243
Subject(s) - boron carbide , raman spectroscopy , materials science , carbide , boron , stoichiometry , analytical chemistry (journal) , diffraction , phase (matter) , powder diffraction , phase transition , infrared spectroscopy , crystallography , thermodynamics , chemistry , metallurgy , optics , organic chemistry , physics
Being a material of choice for lightweight armor applications, boron carbide has been intensively studied. Its behavior under pressure was investigated using both theoretical and experimental methods, such as powder X‐ray diffraction and vibrational spectroscopy. As there is a discrepancy in experimental observations, in the presented work we studied vibrational properties of commercially available, “nearly stoichiometric” B 4 C using IR and Raman spectroscopy up to 73 GPa. No phase transitions were found in the entire pressure range. Our results are at odds with the recent report of a phase transition in B 4.3 C at about 40 GPa.