Phase Transitions in the K0.94Cs0.06NO3 Single Crystal
K 0.945 Cs 0.06 NO 3 single crystals have been grown by isothermal crystallization from an aqueous solution. The growth morphology of the crystals of phases III and II (rhombohedral for III and orthorhombic for II) at the II ↔ III phase transitions is investigated, and the growth rate of the III-pha...
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Published in | Crystallography reports Vol. 67; no. 6; pp. 1013 - 1017 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Moscow
Pleiades Publishing
01.12.2022
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | K
0.945
Cs
0.06
NO
3
single crystals have been grown by isothermal crystallization from an aqueous solution. The growth morphology of the crystals of phases III and II (rhombohedral for III and orthorhombic for II) at the II ↔ III phase transitions is investigated, and the growth rate of the III-phase crystal at the II → III transitions is measured. It is found that the structural transformations in the crystal under study are enantiotropic, and the equilibrium temperature between phases II and III is
Т
0
= 457 ± 1 К. An empirical relationship between the growth rate and temperature is established in the form ϑ = 0.6374Δ
T
+ 0.9212Δ
T
2
– 0.01668Δ
T
3
, where Δ
Т
=
Т
tr
–
Т
0
,
Т
tr
is the transformation temperature, and
Т
0
is the phase equilibrium temperature. |
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ISSN: | 1063-7745 1562-689X |
DOI: | 10.1134/S1063774522060189 |