A low temperature equation of state for monovalent metals

Goel, Sanjay; Midha, Y. R.; Nanda, Vikas

doi:10.1002/pssb.2220840203

Cited by 3 publications

(1 citation statement)

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“…For actual calculations in the high temperature region (above the Debye temperature), it is convenient to make use of the Einstein approximation according to which vf = v for all i. I n fact the results obtained by the use of the Debye spectruni in this temperature region almost coincide with the simpler Einstein version. However, in the low temperature region the Einstein approximation fails and one has to make use of the Debye spectrum to get agreement with experiment [3].…”

Section: Comparison With Experimentsmentioning

confidence: 99%

A Refined Equation of State for Monovalent Metals

Goel

Nanda

1982

Physica Status Solidi (b)

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4 refined equation of state for monovalent metals based on a quantum mechanical version of the cell model is given. Here not only the contribution of free electrons to the equation of state is taken into account but also to a first approximation the effect of anharmonicity of the cell potential is included. The latter refinement results in a considerably improved agreement between theory a.nd experiment.Eine verbesserte Zustandsgleichung fur einwertige Metalle wird angegeben, die auf einer quantenmechanischen Version des Zellenmodells beruht. Dabei wird nicht nur der Beitrag der freien Elektronen zur Zustandsgleichung berucksichtigt, sondern es wird in erster Naherung auch der EinfluB von Anharmonizitat des Zellenpotentials eingeschlossen. Diese Verbesserungen ergeben eine betrachtlich bessere cbereinstimmung zwischen Theorie und Experiment.

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Section: Comparison With Experimentsmentioning

confidence: 99%

A Refined Equation of State for Monovalent Metals

Goel

Nanda

1982

Physica Status Solidi (b)

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Application of a low temperature equation of state for monovalent metals

Goel

Nanda

1979

Physica Status Solidi (b)

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In a recent p a p e~ /1/ a low temperature equation of state for monovalent metals was given. It was found that the derived expression for the thermal expansivity satisfactorily explains the measurement8 for copper in the temperature range 1 to 12 K. Furthermore, it was verified that the values employed for the various parameters in this comparison were also appropriate for the representation of the specific heat data of copper according to the theoretical expression. In this note the experimental results for the thermal expansivity /2/ of silver and gold which have recently become available to us, are compared with theory. Delhi-110007, India. 2) The expression for De? as quoted in /l/, had a typographical e r r o r which has been corrected here. 1) physica (b)

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