Experimental invalidation of phase-transition-induced elastic softening in CrN

Shanmin Wang; Xiaohui Yu; Jianzhong Zhang; Miao Chen; Jinlong Zhu; Liping Wang; Duanwei He; Zhijun Lin; Ruifeng Zhang; Kurt Leinenweber; Yusheng Zhao

doi:10.1103/PhysRevB.86.064111

Experimental invalidation of phase-transition-induced elastic softening in CrN

Shanmin Wang, Xiaohui Yu, Jianzhong Zhang, Miao Chen, Jinlong Zhu, Liping Wang, Duanwei He, Zhijun Lin, Ruifeng Zhang, Kurt Leinenweber, Yusheng Zhao

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

47 Scopus citations

Abstract

We report experimental results of phase stability and incompressibility of CrN. The obtained bulk moduli for cubic and orthorhombic CrN are 257 and 262 GPa, respectively. These results invalidate the conclusion of phase-transition-induced elastic softening recently reported based on nonmagnetic simulations for cubic CrN. On the other hand, they provide the only experimental evidence to support the computational models involving the local magnetic moment of Cr atoms, indicating that atomic spin has a profound influence on the material's elastic properties. We also demonstrate that nonstoichiometry in CrN _x has strong effects on its structural stability.

Original language	English (US)
Article number	064111
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.86.064111
State	Published - Aug 28 2012

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Experimental invalidation of phase-transition-induced elastic softening in CrN",

abstract = "We report experimental results of phase stability and incompressibility of CrN. The obtained bulk moduli for cubic and orthorhombic CrN are 257 and 262 GPa, respectively. These results invalidate the conclusion of phase-transition-induced elastic softening recently reported based on nonmagnetic simulations for cubic CrN. On the other hand, they provide the only experimental evidence to support the computational models involving the local magnetic moment of Cr atoms, indicating that atomic spin has a profound influence on the material's elastic properties. We also demonstrate that nonstoichiometry in CrN x has strong effects on its structural stability.",

author = "Shanmin Wang and Xiaohui Yu and Jianzhong Zhang and Miao Chen and Jinlong Zhu and Liping Wang and Duanwei He and Zhijun Lin and Ruifeng Zhang and Kurt Leinenweber and Yusheng Zhao",

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T1 - Experimental invalidation of phase-transition-induced elastic softening in CrN

AU - Wang, Shanmin

AU - Yu, Xiaohui

AU - Zhang, Jianzhong

AU - Chen, Miao

AU - Zhu, Jinlong

AU - Wang, Liping

AU - He, Duanwei

AU - Lin, Zhijun

AU - Zhang, Ruifeng

AU - Leinenweber, Kurt

AU - Zhao, Yusheng

PY - 2012/8/28

Y1 - 2012/8/28

N2 - We report experimental results of phase stability and incompressibility of CrN. The obtained bulk moduli for cubic and orthorhombic CrN are 257 and 262 GPa, respectively. These results invalidate the conclusion of phase-transition-induced elastic softening recently reported based on nonmagnetic simulations for cubic CrN. On the other hand, they provide the only experimental evidence to support the computational models involving the local magnetic moment of Cr atoms, indicating that atomic spin has a profound influence on the material's elastic properties. We also demonstrate that nonstoichiometry in CrN x has strong effects on its structural stability.

AB - We report experimental results of phase stability and incompressibility of CrN. The obtained bulk moduli for cubic and orthorhombic CrN are 257 and 262 GPa, respectively. These results invalidate the conclusion of phase-transition-induced elastic softening recently reported based on nonmagnetic simulations for cubic CrN. On the other hand, they provide the only experimental evidence to support the computational models involving the local magnetic moment of Cr atoms, indicating that atomic spin has a profound influence on the material's elastic properties. We also demonstrate that nonstoichiometry in CrN x has strong effects on its structural stability.

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JO - Physical Review B - Condensed Matter and Materials Physics

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Experimental invalidation of phase-transition-induced elastic softening in CrN

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