Neutron diffraction investigations are now necessary
to specify the nature of these phase transitions in CsMnPO4.
The standard thermodynamic functions Cop ;m=R; DT 0Ho m=RT; DT 0So m=R and Uo m=R of the crystalline phosphate CsMnPO4 over the temperature range from (0 to 650) K and its standard entropy of formation at 298.15 K were calculated from experimental results