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The low-temperature dynamic crossover in the dielectric relaxation of ice I<inf>h</inf>

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dc.contributor.author Popov I.
dc.contributor.author Lunev I.
dc.contributor.author Khamzin A.
dc.contributor.author Greenbaum A.
dc.contributor.author Gusev Y.
dc.contributor.author Feldman Y.
dc.date.accessioned 2018-04-05T07:09:52Z
dc.date.available 2018-04-05T07:09:52Z
dc.date.issued 2017
dc.identifier.issn 1463-9076
dc.identifier.uri http://dspace.kpfu.ru/xmlui/handle/net/130027
dc.description.abstract © 2017 the Owner Societies. Based on the idea of defect migration as the principal mechanism in the dielectric relaxation of ice I h , the concept of low-temperature dynamic crossover was proposed. It is known that at high temperatures, the diffusion of Bjerrum and ionic defects is high and their movement may be considered to be independent. Simple switching between these two mechanisms leads to a dynamic crossover at ∼235 K. By introducing coupling between the Bjerrum and ionic defects, it is possible to describe the smooth bend in the relaxation time at low temperatures in ice I h . However, because the mobility of Bjerrum orientation defects slows down at low temperatures, they may create blockages for proton hopping. The trapping of ionic defects by L-D defects for a long period of time leads to an increase in the relaxation time and causes a low-temperature crossover. This model was validated by experimental dielectric measurements using various temperature protocols.
dc.relation.ispartofseries Physical Chemistry Chemical Physics
dc.title The low-temperature dynamic crossover in the dielectric relaxation of ice I<inf>h</inf>
dc.type Article
dc.relation.ispartofseries-issue 42
dc.relation.ispartofseries-volume 19
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 28610
dc.source.id SCOPUS14639076-2017-19-42-SID85032798657


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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