Compensation behaviors of a ferrimagnetic Blume-Capel Ising nanowire system with core/ shell structure

Abstract

A core/shell geometric structure is described by ferrimagnetic mixed spin square Blume-Capel Ising nanowire, using MMFM, i.e., molecular mean field method, or rather self-consistent field theory. In this model, antiferromagnetic forms are allowed to spin interactions, i.e. the nearest neighbors. We tested the influence of crystal and external magnetic fields on a ferrimagnetic mixed spin-1 and spin-5/2 square Ising nanowire device, respectively. Spin-1 is located in the middle and in the corners of a rectangular plaquette there are four other spin-5/2. The core-shell ferrimagnetic system shows a point of compensation when exchange couplings are modified for different magnetic field and single-ion anisotropy values. Interesting features are compensation behaviors, where these characteristics found that the mixed spin square nanosystem has two compensation temperatures when DC/|J1|=0, DS/|J1|=−1.0, and J3=−0.75, by application of an external magnetic field, i.e., with h/|J1|=−0.5.