The elastic constants and anisotropy of superconducting MgCNi3 and CdCNi3 under different pressure

Huifang Feng; Xiaozhi Wu; Liyong Gan; Rui Wang; Qunyi Wei

doi:10.1007/s10948-013-2441-8

The elastic constants and anisotropy of superconducting MgCNi3 and CdCNi3 under different pressure

Huifang Feng, Xiaozhi Wu, Liyong Gan, Rui Wang, Qunyi Wei

Physical Sciences and Engineering

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

7 Scopus citations

Abstract

The second-order elastic constants (SOECs) and third-order elastic constants (TOECs) of MgCNi3 and CdCNi3 are presented by using first-principles methods combined with homogeneous deformation theory. The Voigt-Reuss-Hill (VRH) approximation are used to calculate the bulk modulus B, shear modulus G, averaged Young's modulus E and Poisson's ratio ν for polycrystals and these effective modulus are consistent with the experiments. The SOECs under different pressure of MgCNi3 and CdCNi3 are also obtained based on the TOECs. Furthermore, the Zener anisotropy factor, Chung-Buessem anisotropy index, and the universal anisotropy index are used to describe the anisotropy of MgCNi3 and CdCNi3. The anisotropy of Young's modulus of single-crystal under different pressure is also presented. © 2013 Springer Science+Business Media New York.

Original language	English (US)
Pages (from-to)	1187-1194
Number of pages	8
Journal	Journal of Superconductivity and Novel Magnetism
Volume	27
Issue number	5
DOIs	https://doi.org/10.1007/s10948-013-2441-8
State	Published - Nov 23 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The work is supported by the Natural Science Foundation of China (11104361) and Project No. CQDXWL2012015 supported by the Fundamental Research Funds for the Central Universities

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1007/s10948-013-2441-8

Cite this

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title = "The elastic constants and anisotropy of superconducting MgCNi3 and CdCNi3 under different pressure",

abstract = "The second-order elastic constants (SOECs) and third-order elastic constants (TOECs) of MgCNi3 and CdCNi3 are presented by using first-principles methods combined with homogeneous deformation theory. The Voigt-Reuss-Hill (VRH) approximation are used to calculate the bulk modulus B, shear modulus G, averaged Young's modulus E and Poisson's ratio ν for polycrystals and these effective modulus are consistent with the experiments. The SOECs under different pressure of MgCNi3 and CdCNi3 are also obtained based on the TOECs. Furthermore, the Zener anisotropy factor, Chung-Buessem anisotropy index, and the universal anisotropy index are used to describe the anisotropy of MgCNi3 and CdCNi3. The anisotropy of Young's modulus of single-crystal under different pressure is also presented. {\textcopyright} 2013 Springer Science+Business Media New York.",

author = "Huifang Feng and Xiaozhi Wu and Liyong Gan and Rui Wang and Qunyi Wei",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The work is supported by the Natural Science Foundation of China (11104361) and Project No. CQDXWL2012015 supported by the Fundamental Research Funds for the Central Universities",

year = "2013",

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doi = "10.1007/s10948-013-2441-8",

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T1 - The elastic constants and anisotropy of superconducting MgCNi3 and CdCNi3 under different pressure

AU - Feng, Huifang

AU - Wu, Xiaozhi

AU - Gan, Liyong

AU - Wang, Rui

AU - Wei, Qunyi

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The work is supported by the Natural Science Foundation of China (11104361) and Project No. CQDXWL2012015 supported by the Fundamental Research Funds for the Central Universities

PY - 2013/11/23

Y1 - 2013/11/23

N2 - The second-order elastic constants (SOECs) and third-order elastic constants (TOECs) of MgCNi3 and CdCNi3 are presented by using first-principles methods combined with homogeneous deformation theory. The Voigt-Reuss-Hill (VRH) approximation are used to calculate the bulk modulus B, shear modulus G, averaged Young's modulus E and Poisson's ratio ν for polycrystals and these effective modulus are consistent with the experiments. The SOECs under different pressure of MgCNi3 and CdCNi3 are also obtained based on the TOECs. Furthermore, the Zener anisotropy factor, Chung-Buessem anisotropy index, and the universal anisotropy index are used to describe the anisotropy of MgCNi3 and CdCNi3. The anisotropy of Young's modulus of single-crystal under different pressure is also presented. © 2013 Springer Science+Business Media New York.

AB - The second-order elastic constants (SOECs) and third-order elastic constants (TOECs) of MgCNi3 and CdCNi3 are presented by using first-principles methods combined with homogeneous deformation theory. The Voigt-Reuss-Hill (VRH) approximation are used to calculate the bulk modulus B, shear modulus G, averaged Young's modulus E and Poisson's ratio ν for polycrystals and these effective modulus are consistent with the experiments. The SOECs under different pressure of MgCNi3 and CdCNi3 are also obtained based on the TOECs. Furthermore, the Zener anisotropy factor, Chung-Buessem anisotropy index, and the universal anisotropy index are used to describe the anisotropy of MgCNi3 and CdCNi3. The anisotropy of Young's modulus of single-crystal under different pressure is also presented. © 2013 Springer Science+Business Media New York.

UR - http://hdl.handle.net/10754/563099

UR - http://link.springer.com/10.1007/s10948-013-2441-8

UR - http://www.scopus.com/inward/record.url?scp=84899424572&partnerID=8YFLogxK

U2 - 10.1007/s10948-013-2441-8

DO - 10.1007/s10948-013-2441-8

M3 - Article

SN - 1557-1939

VL - 27

SP - 1187

EP - 1194

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 5

ER -

The elastic constants and anisotropy of superconducting MgCNi3 and CdCNi3 under different pressure

Abstract

Bibliographical note

ASJC Scopus subject areas

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