Publication: Low pressure metastable single-bonded solid nitrogen phases
Дата
2022
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Within the framework of the density functional theory, the possibility of the formation of single-bonded solid atomic nitrogen phases as a result of adiabatic compression of molecular and cluster nitrogen structures at zero temperature has been studied. It has been demonstrated that nitrogen clusters N-8(C-2v)-B, which are theoretically predicted as one of the promising candidates for high energy density materials, can transform under compression into a solid atomic phase with crystal lattice symmetry P2(1). The P2(1) phase is dynamically stable under decompression to zero pressure. It is shown that the epsilon-N-2 molecular phase transforms under compression into a solid atomic phase with R3c symmetry, and retains a vibrationally stable crystal structure when the pressure is reduced to 30 GPa, transforming into a stable cluster form at lower pressures. The atoms in the P2(1) and R3c solid atomic phases are linked by single bonds; therefore, these structures can store a large amount of energy approximate to 1.4 eV per atom. A detailed comparison of the properties of new P2(1) and R3c solid atomic phases with other nitrogen crystal structures that are dynamically stable at low pressures has been carried out.
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Grishakov, K. S. Low pressure metastable single-bonded solid nitrogen phases / Grishakov, KS, Degtyarenko, NN // Physical Chemistry Chemical Physics. - 2022. - 10.1039/d2cp00620k
URI
https://www.doi.org/10.1039/d2cp00620k
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https://openrepository.mephi.ru/handle/123456789/28892
https://www.scopus.com/record/display.uri?eid=2-s2.0-85128145494&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000772561400001
https://openrepository.mephi.ru/handle/123456789/28892