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 journalArticle

37 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 languageEnglish (US)
Article number064111
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number6
DOIs
StatePublished - Aug 28 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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