Lattice Parameter Variation in Ni1-xCaxO Ternary Solid Solutions.

Autor: Baraik, Kiran, Bhakar, Ashok, Sagdeo, Archna, Singh, S. D.
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Zdroj: AIP Conference Proceedings; 2017, Vol. 1832 Issue 1, p1-3, 3p, 3 Graphs
Abstrakt: Ternary solid solutions of Ni1-xCaxO (x = 1 to 10 %) are prepared by solid state reaction at 1400°C for 48 hours and characterized with XRD measurement. Single phase of Ni1-xCaxO is observed up to 8 % of Ca doping in NiO and the lattice parameters are found to increase with Ca composition. Thereafter, a secondary phase of CaO suddenly appears for Ca compositions more than 8% and the lattice parameter does not increase appreciably. This observation indicates that lattice of Ni1-xCaxO is not energetically favorable for Ca compositions more than 8% that may lead to the miscibility gap. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index