A Monte Carlo study of the Blume–Capel thin film in the presence of a random crystal field

•A Blume–Capel thin film is investigated using the MCS.•The effect of the random crystal field on the phase diagrams has been examined.•The double reentrant phenomena and the tricritical point are observed.•The randomness parameter destroys the tricritical behavior.

A Monte Carlo simulation with heat bath algorithm is used to study the effect of random crystal field and surface exchange interactions on the critical behavior and the magnetic properties of a spin-1 Ising ferromagnetic thin film having the simple cubic symmetry. The phase diagram exhibits a rich variety of behaviors such as the double reentrant phenomena and the existence of tricritical points. Thermal magnetization behavior and phase diagrams have been discussed in detail.