Enhancement of Curie temperature of gallium ferrite beyond room temperature by the formation of Ga_0.8Fe_1.2O₃−Y₃Fe₅O₁₂ composite

Multiferroic materials with good magneto-electric coupling are of great interest due to their enormous applications in the field spintronic devices. Magnetoelectric (ME) gallium ferrite is an interesting material its room temperature (RT) piezoelectricity and near RT ferrimagnetism along significant ME (10 −11 s/m at 4.2 K). The work aims increase magnetic transition (T C ) above so that can have strong be implemented for practical applications. Several earlier reports shown Ga 2−x Fe x O 3 increases higher contents. Hence, we chose study properties (GFO) only = 1.2. Y 5 12 (YIG) another ferromagnet very high resistivity (∼10 Ω cm). In this work, by forming a GFO-YIG composite 10% concentration YIG, phase increased beyond from ∼289 K GFO ∼309 0.9 GFO-0.1 YIG. remnant magnetization also enhanced 0.211 emu/g 2.82 reporting ∼8.2 30 kOe.