Structure of lanthanum-borogermanate glass with stillwellite composition according to vibrational spectroscopy dataстатья
Перевод
Исследовательская статья
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Дата последнего поиска статьи во внешних источниках: 16 ноября 2017 г.
Авторы:
Sigaev V.N. ,
Lotarev S.V. ,
Orlova E.V. ,
Golubev N.V. ,
Koltashev V.V. ,
Plotnichenko V.G. ,
Komandin G.A.
Журнал:
Glass and Ceramics (English translation of Steklo i Keramika)
Том:
67
Номер:
3-4
Год издания:
2010
Издательство:
Springer Nature
Местоположение издательства:
Switzerland
Первая страница:
105
Последняя страница:
108
DOI:
10.1007/s10717-010-9238-z
Аннотация:
Dielectric IR spectroscopy and Raman scattering (RS) spectroscopy have been used to confirm the presence in the structure of lanthanum-borogermanate (LBG) glass of triply coordinated boron atoms which are absent in a LaBGe 5 crystal. The grouping ratio [BO 3]/[BO 4] is independent of the conditions under which the glass is obtained. It is proposed that amorphous nanosize regions of two types with approximately the same chemical composition but different structure are present in the glass. Regions of the first kind contain predominately quadruply coordinated boron atoms and are the basis for the formation of nuclei of stillwellite crystals, while regions of the second kind are more disordered, and a large fraction of the boron atoms in them lie at centers of oxygen triangles. © 2010 Springer Science+Business Media, Inc.
Добавил в систему:
Лотарев Сергей Викторович