High-pressure synthesis and study of low-compressibility molybdenum nitride (MoN and MoN1−x) phases

Emmanuel Soignard; Paul F. McMillan; Tracey D. Chaplin; Sharif M. Farag; Craig L. Bull; Maddury S. Somayazulu; Kurt Leinenweber

doi:10.1103/PhysRevB.68.132101

High-pressure synthesis and study of low-compressibility molybdenum nitride (MoN and MoN_1−x) phases

Emmanuel Soignard, Paul F. McMillan, Tracey D. Chaplin, Sharif M. Farag, Craig L. Bull, Maddury S. Somayazulu, Kurt Leinenweber

Molecular Sciences, School of (SMS)

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

69 Scopus citations

Abstract

We report the compressibility of the stoichiometric hexagonal δ phase of MoN that is a well-known hard material that becomes superconducting below T_c = 12 K. The measured bulk modulus is K₀ = 345(9) GPa and K₀^′=3.5(3). We also report the compressibility of the non-stoichiometric cubic B1 structured γ − Mo₂N phase, that has a lower bulk modulus [K₀ = 301(7) GPa, assuming K₀^′=4]. The difference in bulk modulus is due to the difference in structure and the cohesive energy between the two phases.

Original language	English (US)
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	68
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.68.132101
State	Published - 2003

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "High-pressure synthesis and study of low-compressibility molybdenum nitride (MoN and MoN1−x) phases",

abstract = "We report the compressibility of the stoichiometric hexagonal δ phase of MoN that is a well-known hard material that becomes superconducting below Tc = 12 K. The measured bulk modulus is K0 = 345(9) GPa and K0′=3.5(3). We also report the compressibility of the non-stoichiometric cubic B1 structured γ − Mo2N phase, that has a lower bulk modulus [K0 = 301(7) GPa, assuming K0′=4]. The difference in bulk modulus is due to the difference in structure and the cohesive energy between the two phases.",

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AU - Soignard, Emmanuel

AU - McMillan, Paul F.

AU - Chaplin, Tracey D.

AU - Farag, Sharif M.

AU - Bull, Craig L.

AU - Somayazulu, Maddury S.

AU - Leinenweber, Kurt

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AB - We report the compressibility of the stoichiometric hexagonal δ phase of MoN that is a well-known hard material that becomes superconducting below Tc = 12 K. The measured bulk modulus is K0 = 345(9) GPa and K0′=3.5(3). We also report the compressibility of the non-stoichiometric cubic B1 structured γ − Mo2N phase, that has a lower bulk modulus [K0 = 301(7) GPa, assuming K0′=4]. The difference in bulk modulus is due to the difference in structure and the cohesive energy between the two phases.

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High-pressure synthesis and study of low-compressibility molybdenum nitride (MoN and MoN_1−x) phases

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