Investigation on magnetic critical behavior related to its magnetocaloric effect in Mn0.5Zn0.5Fe2O4 spinel ferrite

Study on the chemical co-precipitation synthesized CoFe2O4 nanoparticle for magnetocaloric performance in the vicinity of superparamagnetic blocking temperature

“…Numerous researchers have examined the magnetocaloric characteristics of spinel ferrites, including, Co 1+x Cr x Fe 2-x O 4 , Cu 0.35 Zn 0.65 Fe 2 O 4 , CoFe 2 O 4 , Mn 0.5 Zn 0.5 Fe 2 O 4 , Ni 0.4 Cu 0.2 Zn 0.4 Fe 2-x Dy x O , and among others [ [19] , [20] , [21] , [22] ]. Superparamagnetic nanoparticles like ZnFe 2 O 4 , CoFe 2 O 4 , Fe 3 O 4 , and NiFe 2 O 4 are well-regarded as magnetocaloric materials because of their significant magnetic moments close to the transition temperature when subjected to applied magnetic fields [ 21 ].…”

“…For x = 0.1, the ferromagnetic Curie temperature (T c ) was measured at 296 K, with a maximum magnetic entropy change (ΔS max ) reaching 0.64 J/kg K and a relative cooling power (RCP) of 117 J/kg. M. S. Anwar et al 's study delves into the magnetic critical nature of Mn 0.5 Zn 0.5 Fe 2 O 4 in connection with its magnetocaloric properties [ 22 ]. Under an applied field of H = 25 kOe, they recorded a maximum magnetic entropy change (ΔS max ) of roughly 1.1 J/kg K and a refrigeration capacity (RC) of approximately 116 J/kg.…”