High-Temperature Heat Capacity of Pb10 – xNdx(GeO4)2 + x(VO4)4 – x (x = 0–3) Apatites
- Authors: Denisova L.T.1, Golubeva E.O.1, Belousova N.V.1, Denisov V.M.1, Galiakhmetova N.A.1
- 
							Affiliations: 
							- Institute of Non-Ferrous Metals and Material Science, Siberian Federal University
 
- Issue: Vol 61, No 7 (2019)
- Pages: 1343-1346
- Section: Thermal Properties
- URL: https://journals.rcsi.science/1063-7834/article/view/205975
- DOI: https://doi.org/10.1134/S1063783419070060
- ID: 205975
Cite item
Abstract
We obtained Pb10 – xNdx(GeO4)2 + x(VO4)4 – x (x = 0–3) compounds with an apatite structure by solid-phase synthesis from initial oxides PbO, Nd2O3, GeO2, and V2O5 with successive annealing at 773–1073 K in the air. Their high-temperature heat capacity was measured by differential scanning calorimetry. The thermodynamic functions (changes in enthalpy, entropy, and reduced Gibbs energy) are calculated using the experimental dependences of Cp = f(T).
About the authors
L. T. Denisova
Institute of Non-Ferrous Metals and Material Science, Siberian Federal University
							Author for correspondence.
							Email: antluba@mail.ru
				                					                																			                												                	Russian Federation, 							Krasnoyarsk, 660025						
E. O. Golubeva
Institute of Non-Ferrous Metals and Material Science, Siberian Federal University
														Email: antluba@mail.ru
				                					                																			                												                	Russian Federation, 							Krasnoyarsk, 660025						
N. V. Belousova
Institute of Non-Ferrous Metals and Material Science, Siberian Federal University
														Email: antluba@mail.ru
				                					                																			                												                	Russian Federation, 							Krasnoyarsk, 660025						
V. M. Denisov
Institute of Non-Ferrous Metals and Material Science, Siberian Federal University
														Email: antluba@mail.ru
				                					                																			                												                	Russian Federation, 							Krasnoyarsk, 660025						
N. A. Galiakhmetova
Institute of Non-Ferrous Metals and Material Science, Siberian Federal University
														Email: antluba@mail.ru
				                					                																			                												                	Russian Federation, 							Krasnoyarsk, 660025						
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