ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Thermal Expansion of Spinels MgCr204, MgAl204 and MgFe204
Institute of Inorganic Chemistry, Slovak Academy of Sciences,
Abstract: The lattice constants of the cubic spinels MgCr2O4, MgAl2Cl2 and MgFe2O4
have been measured by high-temperature powder X-ray diffraction method in
the temperature range from 20 to 1300°C. The dependence of the lattice constants
on the temperature has been expressed by polynoms of second order,
the respective coefficients being found by the least-squares method. The
coefficients of the true thermal expansion
α = a1± a2t have been determined.
The expansion of the above spinels are reversible.
The thermal expansion of MgFe2O4 includes a contribution Aast which is
a function of the degree of inversion.
Full paper in Portable Document Format: 239a665.pdf
Chemical Papers 23 (9) 665–670 (1969)
Friday, September 30, 2022