Random crystal field effects for spin-3/2 Blume-Capel model

► Spin-3/2 Blume-Capel model with random crystal field on the Bethe lattice. ► Recursion relations are used in obtaining the phase diagrams. ► Both second- and first-order phase transitions are found. ► Random character of Δ is more effective at lower T. ► And when system goes from one ground state configuration to another.