Thermal expansion of phosphate–sulfates of eulytite structure

New phosphate–sulfates of the next chemical formulae ASr 2 Eu(PO 4 ) 2 SO 4 (A = K, Rb, Cs), NaBa 6 Zr(PO 4 ) 5 SO 4 , Pb 2 Mg 2 (PO 4 ) 2 SO 4 , and Ba x Sr 4−x (PO 4 ) 2 SO 4 (0 ≤  x  ≤ 4) have been designed and synthesized with the aim of investigating their thermal expansion properties in the lo...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2018-07, Vol.133 (1), p.199-205
Main Authors: Pet’kov, V. I., Dmitrienko, A. S., Bokov, A. I.
Format: Article
Language:English
Subjects:
Analysis
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Crystal structure
Crystals
Differential thermal analysis
Diffraction
Inorganic Chemistry
Measurement Science and Instrumentation
Organic chemistry
Phosphates
Physical Chemistry
Polymer Sciences
Structure
Sulfates
Thermal expansion
Thermal properties
X ray powder diffraction
X-ray diffraction
X-rays
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Summary:New phosphate–sulfates of the next chemical formulae ASr 2 Eu(PO 4 ) 2 SO 4 (A = K, Rb, Cs), NaBa 6 Zr(PO 4 ) 5 SO 4 , Pb 2 Mg 2 (PO 4 ) 2 SO 4 , and Ba x Sr 4−x (PO 4 ) 2 SO 4 (0 ≤  x  ≤ 4) have been designed and synthesized with the aim of investigating their thermal expansion properties in the low-temperature region. Obtained samples have been characterized with X-ray, IR, DTA, and microprobe electron analyses. Crystal structure and unit cell parameters were derived from the least-squares refinement of powder X-ray diffraction data (eulytite-type, sp. gr. I 4 3 ¯ d ). The magnitudes of average linear thermal expansion coefficients vary from 1.1 × 10 −5 to 1.7 × 10 −5  K −1 , which is conducive for application in optics and electronics. Graphical Abstract
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-017-6676-7