Effects of different light and heavy rare-earth compositions on structure and magnetic properties of high-entropy garnet ceramics

Here, a series of high-entropy (Sm_0.2Eu_0.2Yb_0.2Y_0.2RE_0.2)₃Fe₅O₁₂ (RE = La, Nd, Gd, Dy, Er, Tm, Lu) garnet ceramics were synthesized by the solid-phase method. Among them, samples (Sm_0.2Eu_0.2Yb_0.2Y_0.2RE_0.2)₃Fe₅O₁₂ (RE = Nd, Gd, Dy, Er, Tm, Lu) forms single-phase garnet structure, and only sample (Sm_0.2Eu_0.2Yb_0.2Y_0.2La_0.2)₃Fe₅O₁₂ did not form single-phase but some second phases appear. Meanwhile, EDS results show that the approximate equimolar ratio of lanthanides were determined. The effects of different rare-earth composition on the structure and magnetic properties of the high-entropy rare-earth garnet ceramics were systematically investigated. Moreover, the combination of different light and heavy rare-earth makes the magnetism of the high-entropy garnet ceramics interesting, which proves the possibility of controlling the magnetism of high-entropy garnet ceramics.