Spectroscopy and crystal chemical properties of NaCa2[Si4O10]F natural agrellite with tubular structureстатья
Статья опубликована в журнале из списка Web of Science и/или Scopus
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Авторы:
Kaneva E.,
Shendrik R.,
Mesto E.,
Bogdanov A.,
Vladykin N.
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Журнал:
Chemical Physics Letters
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Том:
738
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Год издания:
2020
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Издательство:
Elsevier BV
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Местоположение издательства:
Netherlands
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DOI:
10.1016/j.cplett.2019.136868
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Аннотация:
Agrellite is a rare inosilicate, having a crystal structure characterized by SiO4-tetrahedral tubes located between continuous wall layers formed by edge-sharing Ca-polyhedra. A detailed crystal chemical and physical study of agrellite specimens is carried out by means of electron probe microanalysis, Fourier transform infrared spectroscopy, electron-paramagnetic resonance, and single crystal X-ray diffraction. Additionally, the electronic structures of agrellite was calculated. Luminescence due to 5d-4f transition in Ce3+ ions is observed in both investigated samples. EPR analysis points out the Mn2+ replaces Ca2+ ion in Ca(1A) and Ca(2B) positions, coordinated by two F sites. © 2019 Elsevier B.V.
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Добавил в систему:
Шендрик Роман Юрьевич