Effect of the lanthanide ion on the structure and low-temperature phase transitions in RbL(SO4)2.4H2O (L identical to La-Er) crystals

Crystallographic unit cell parameters of RbL(SO 4 ) 2 .4H 2 O (L identical to La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, and Er) are 296 K and specific heat capacity (C p ) data on RbL(SO 4 ) 2 .4H 2 O (L identical to Pr, Nd, Sm, Eu, Gd, Tb, Dy, and Er) for 110