SYNTHESIS AND SPECTROSCOPIC INVESTIGATION OF ERBIUM- AND YTTERBIUM-CONTAINING ORTHOPHOSPHATES WITH LANGBEINITE STRUCTURE |
| 3 | |
| 2014 |
| CHEMISTRY |
| scientific article | 546.185:535.373.1 | ||
| 31-36 | orthophosphates, langbeinite, erbium, ytterbium, luminescence, bioimaging. |
| Langbeinite-type orthophosphates K
2[Mg
0.5-0.5(
x+y) Er
x Yb
y Zr
1.5-0.5(
x+y) (PO
4)
3], where x+y = 0.10, 0.20, 0.50, 1.00 ( x:y = 1:1); x+y = 0.25, 0.50, 0.75, 1.00 ( x:y = 1:9) are synthesized by the sol-gel method and characterized by differential scanning calorimetry, IR spectroscopy and X-ray powder diffraction. The formation of cubic space group P213 (with Z=4) has been found. The calculated unit cell parameters lie within 10.161(7) ? а ? 10.320(6) ?, 1049.15(12) ? V ?1099.29(8) ? |
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