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On the lattice dynamics of solid nitrogen

✍ Scribed by T. Luty; G.S. Pawley

Publisher
Elsevier Science
Year
1974
Tongue
English
Weight
425 KB
Volume
28
Category
Article
ISSN
0009-2614

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✦ Synopsis

Lattice statics and dynamics calculations for cu-nitrogen have bees done using the fi-exp aeoin-atom titenction to derive intennoldcular forces. The three pammeters of this interaction ue reduced to one by cunskeining them so that the uo.it cell and sublimation energy are calculated to agree with experincnt. Choicc'af the ane parameter.

is then made us&g spectroscopic date. This 'best' potential is then used to cskulate fhe statics and dynamics of &nitrcgen. This is stable only under pressure, and the calculation of the h&ice dynamics under pcesrure gives a satisia~tory agreement with &perk&t.

1. a9itrogen

The a.phase of nitrogen is stable below 35.4 I;: and under nornml pressure. A schematic phase-dia; gram for nitrogen is shown in fig. 1. Accordini to 'I' ~fiEti'CA&~H+XSLElTE~S' ',I :.

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