Temperature- versus compositional-induced structural deformations of gadolinite group minerals with various Be/B ratio

Research output: Contribution to journal › Article › peer-review

DOI

https://doi.org/10.1016/j.jssc.2021.122187
Final published version

Gadolinite crystals from Mogov (Tajikistan), Dorozhniy (Tajikistan), Dara-Pioz (Tajikistan) and Osterby (Sweden) with different Be/B ratio (0.56-191) were studied by single crystal X-ray diffraction, energy dispersive and wavelength-dispersive X-ray analysis and inductively coupled plasma–optical emission spectrometry to compare their crystal chemistry features. Besides, Raman spectra and thermal behavior at low (from –173 to +67 ºC) and high (from +25 to +1100 ºC) temperatures of gadolinite-(Y) from Osterby (Sweden) was investigated in order to study recrystallization and obtain the thermal expansion coefficients. It was shown that thermal expansion of gadolinite-(Y) (Y2Fe2+Be2Si2O10) is very close to the expansion of datolite (Ca2B2Si2O8(OH)2). Comparison of the temperature and chemical deformations confirms the main rules of comparative crystal chemistry.

Original language	English
Article number	122187
Number of pages	12
Journal	Journal of Solid State Chemistry
Volume	299
Early online date	20 Apr 2021
DOIs	https://doi.org/10.1016/j.jssc.2021.122187
State	Published - 1 Jul 2021

Research areas

B–Be substitution, Calcibeborosilite, Chemical deformation, Gadolinite, Thermal expansion, CRYSTAL-STRUCTURE, RAMAN, X-RAY-DIFFRACTION, B-Be substitution, PHASE-TRANSITION, CHEMISTRY, HIGH-PRESSURE SYNTHESIS, SPECTROSCOPIC CHARACTERIZATION, RADIATION-DAMAGE, DATOLITE, METAMICT TITANITE

Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Ceramics and Composites
Materials Chemistry
Inorganic Chemistry
Physical and Theoretical Chemistry

ID: 76389949