Abstract:
The new compounds Yb2MI
3Fe5O12 (MI — Li, Na, K) have been synthesized by solid phase method from oxides
of lithium, sodium, potassium, iron and lanthanum. By means of XRD analysis it was determined that the
compounds crystallize in a tetragonal crystal system. The compounds’ heat capacities have been measured in
the range of temperature 298.15 ... 673 K and have been found -shaped jumps on the dependence diagrams
CP
0 ~ f (T) which caused, probably by phase transitions of the second type.
