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Equation of state of cubic hafnium(IV) nitride having Th3P4 -type structure

Dzivenko, Dmytro A. and Zerr, Andreas and Boehler, Reinhard and Riedel, Ralf (2006):
Equation of state of cubic hafnium(IV) nitride having Th3P4 -type structure.
In: Solid State Communications, Elsevier, pp. 255-258, 139, (6), ISSN 00381098,
[Online-Edition: http://dx.doi.org/10.1016/j.ssc.2006.06.020],
[Article]

Abstract

Pressure dependence of the specific volume, V(P), of the recently discovered high-pressure compound Hf3N4 having cubic Th3P4-type structure (c- Hf3N4) has been measured at room temperature up to 43.9 GPa in a diamond anvil cell using energy-dispersive X-ray powder diffraction combined with synchrotron radiation. A least-square fit of the Birch–Murnaghan equation of state to the experimental V(P)-data yielded for c- Hf3N4 the bulk modulus of View the MathML source and its first pressure derivative of View the MathML source. For View the MathML source fixed at 4 the bulk modulus of c- Hf3N4 was determined to be View the MathML source. The obtained B0-value is only insignificantly below that estimated in preliminary measurements. Existing theoretical predictions for B0 scatter around the present experimental data. The observation of a high bulk modulus of c- Hf3N4 supports the suggestion that this compound could have high hardness.

Item Type: Article
Erschienen: 2006
Creators: Dzivenko, Dmytro A. and Zerr, Andreas and Boehler, Reinhard and Riedel, Ralf
Title: Equation of state of cubic hafnium(IV) nitride having Th3P4 -type structure
Language: English
Abstract:

Pressure dependence of the specific volume, V(P), of the recently discovered high-pressure compound Hf3N4 having cubic Th3P4-type structure (c- Hf3N4) has been measured at room temperature up to 43.9 GPa in a diamond anvil cell using energy-dispersive X-ray powder diffraction combined with synchrotron radiation. A least-square fit of the Birch–Murnaghan equation of state to the experimental V(P)-data yielded for c- Hf3N4 the bulk modulus of View the MathML source and its first pressure derivative of View the MathML source. For View the MathML source fixed at 4 the bulk modulus of c- Hf3N4 was determined to be View the MathML source. The obtained B0-value is only insignificantly below that estimated in preliminary measurements. Existing theoretical predictions for B0 scatter around the present experimental data. The observation of a high bulk modulus of c- Hf3N4 supports the suggestion that this compound could have high hardness.

Journal or Publication Title: Solid State Communications
Volume: 139
Number: 6
Publisher: Elsevier
Uncontrolled Keywords: Cubic Hf3N4, Bulk modulus, High pressure
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 20 Apr 2012 09:06
Official URL: http://dx.doi.org/10.1016/j.ssc.2006.06.020
Identification Number: doi:10.1016/j.ssc.2006.06.020
Funders: The financial support of the DESY and of the Deutsche Forschungsgemeinschaft is gratefully acknowledged. A.Z. acknowledges the support of the Adolf-Messer-Foundation.
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