La2Hf2O7 Crystal and Local Structure Changes on the Fluorite - Pyrochlore Phase Transition Full article
Conference |
Международная конференция «Плазменные, лазерные исследования и технологии» (ПЛИТ 2016) 25-27 Jan 2016 , Москва |
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Journal |
Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596 |
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Output data | Year: 2016, Volume: 747, Article number : 012043, Pages count : 4 DOI: 10.1088/1742-6596/747/1/012043 | ||||
Tags | NANOCRYSTALLINE STRUCTURES; Ln2Hf2O7; Dy; Ln; FEATURES; SYSTEMS; Gd | ||||
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Abstract:
The process of La2Hf2O7 (rLa3+/rHf4+ = 1.63) nanocrystals formation and evolution upon calcinations up to 1400 °C has been investigated by means of synchrotron radiation X-ray diffraction (XRD) and Raman spectroscopy. It has been shown that isothermal calcination at 800 °C/3h of the X-ray amorphous precursor firstly leads to the formation of oxide nanocrystalline powders with a defect fluorite structure. In the temperature range 900 - 1000 °C we observed the nucleation and growth of pyrochlore nanodomains inside a well crystalline fluorite matrix. The pyrochlore-type superstructural ordering of cations and anions appears at calcinations temperature higher than 1000 °C.
Cite:
Popov V.V.
, Menushenkov A.P.
, Yastrebtsev A.A.
, Zubavichus Y.V.
La2Hf2O7 Crystal and Local Structure Changes on the Fluorite - Pyrochlore Phase Transition
Journal of Physics: Conference Series. 2016. V.747. 012043 :1-4. DOI: 10.1088/1742-6596/747/1/012043 WOS Scopus РИНЦ
La2Hf2O7 Crystal and Local Structure Changes on the Fluorite - Pyrochlore Phase Transition
Journal of Physics: Conference Series. 2016. V.747. 012043 :1-4. DOI: 10.1088/1742-6596/747/1/012043 WOS Scopus РИНЦ
Files:
Full text from publisher
Dates:
Submitted: | Sep 1, 2016 |
Published print: | Sep 1, 2016 |
Published online: | Sep 21, 2016 |
Identifiers:
Web of science | WOS:000387066400043 |
Scopus | 2-s2.0-84992079424 |
Elibrary | 27583669 |
Chemical Abstracts | 2017:1942619 |
OpenAlex | W2521357473 |