 The researchers developed a novel method for producing highly porous ferromagnetic glass ceramic microspheres with enhanced cytocompatibility. The microspheres were produced using a one-step flame spheroidization process, which allowed for the incorporation of iron oxide and calcium ferrite domains into a phosphate-based glass matrix. These microspheres exhibited high levels of remnant magnetism and could be used for localized magnetic hyperthermia treatments. Additionally, complementary cytocompatibility tests confirmed their suitability for biomedical applications. This study suggests that the flame spheroidization process can open up new opportunities for developing innovative synergistic biomaterials for bone tissue regeneration. This article was authored by Jesus Molinar Diaz, John Luke Woodliff, Benjamin Milbourne, and others.