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Compressibility of Nb 2 AsC to 41 GPa
Journal article   Open access   Peer reviewed

Compressibility of Nb 2 AsC to 41 GPa

Ravhi Kumar, Sandeep Rekhi, A Cornelius and Michel Barsoum
Applied physics letters, v 86(11), pp 111904-111904-3
07 Mar 2005
url
https://doi.org/10.1063/1.1884261View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open

Abstract

Room temperature synchrotron x-ray diffraction experiments were performed on the layered hexagonal ternary carbide Nb 2 AsC in a diamond anvil cell to a pressure of 41 GPa. The structure is stable with no phase transitions observed in this pressure range. The bulk modulus is 224 ± 2 GPa , with a pressure derivative of 4; the former is the highest bulk modulus for a M n + 1 A X n (MAX) phase, including Ti 3 SiC 2 , measured to date. Nb 2 AsC is also the first MAX phase for which the compressibility along the a direction is higher than along the c direction; in other words, the c ∕ a ratio increases strongly with applied pressure.

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Domestic collaboration
Web of Science research areas
Physics, Applied
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