DOAJ Open Access 2021

Temperature phase transitions in Rb2KRe3+F6 elpasolites - Raman spectroscopy study

Alexander N VTYURIN Alexander S. Krylov Svetlana N. Krylova Yulia V. Gerasimova Alexander A. Ivanenko +1 lainnya

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Abstrak

Phase transitions in crystals of fluorine-containing elpasolites are investigated by Raman scattering spectroscopy. It was found that lattice instabilities in these crystals are induced by soft mode condensations, while restorations of these modes in the distorted phases have not been observed due to their strong interactions with low-frequency noncritical lattice vibrations. Increasing the mass of a rare-earth ions shifts down frequencies of noncritical modes, that enhances these interactions and leads to a narrowing of the range of existence of intermediate phase and then to its disappearance.

Topik & Kata Kunci

Crystallography Physical and theoretical chemistry

Penulis (6)

Alexander N VTYURIN

Alexander S. Krylov

Svetlana N. Krylova

Yulia V. Gerasimova

Alexander A. Ivanenko

Vladimir N. Voronov

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APA MLA BibTeX

VTYURIN, A.N., Krylov, A.S., Krylova, S.N., Gerasimova, Y.V., Ivanenko, A.A., Voronov, V.N. (2021). Temperature phase transitions in Rb2KRe3+F6 elpasolites - Raman spectroscopy study. https://co-ac.com/caip/index.php/materialsanddevices/article/view/94

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Informasi Jurnal

Tahun Terbit: 2021
Sumber Database: DOAJ
Akses: Open Access ✓