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| Author(s) |
Dmitricheva, E. V.; Makarova, I. P.; Grebenev, V. V.; Dolbinina, V. V.; Verin, I. A.; Chitra, R.; Choudhury, R. R.
(SSPD)
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| Source |
Crystallography Reports, 2014. Vol. 59 (6): pp. 878-884 |
| ABSTRACT
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The
influence of isomorphous replacement in the cation sublattice on the
kinetics of the phase transition in single crystals of the solid
solutions (Kx(NH4)1 ⎯x)mHn(SO4)(m+n)/2⋅yH2O belonging to the K3H(SO4)2–(NH4)3H(SO4)2–H2O
salt system was studied. Superproton phase transitions for the end
com[1]positions of this system have been found earlier. The optical and
thermal properties of crystals with the composition (K,NH4)3H(SO4)2
in the temperature range from 295 to 500 K were investigated, and the
crystal structure was determined at 295 K. The results of the study and
the comparison with the literature data show that the replacement of
potassium atoms with ammonia leads to a fundamental change in the
kinetics of the phase transition, the phase - transition temperature
remaining virtually unchanged. |
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