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

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 D C / | J 1 | = 0 , D S / | J 1 | = − 1.0 , and J 3 = − 0.75 , by application of an external magnetic field, i.e., with h / | J 1 | = − 0.5. • 1. Molecular mean-field method (MMFM) has been used for the study of a ferrimagnetic mixed spin square Blume-Capel Ising nanowire consists of spin-1 core and spin-5/2 outer surface. • Our system has two spin compensation temperatures when , with , and , in the presence of an external magnetic field. • The system experiences a jump which corresponds to the first-order transition to obtain new phases are (−1,0.5), (−1,1.5), for the values of D S / | J 1 | = − 1.0 and D S / | J 1 | = − 0.5 , respectively. [ABSTRACT FROM AUTHOR]