Used in biomedical applications such as targeted drug delivery, where the nanoparticles can be guided to specific sites in the body using external magnetic fields. Enables efficient magnetic resonance imaging (MRI) contrast enhancement for improved diagnosis of tumors and inflammatory diseases. Applied in hyperthermia treatment of cancer, where alternating magnetic fields generate heat to destroy malignant cells. Utilized in biosensors and immunoassays for rapid detection of pathogens and biomarkers. Employed in environmental remediation to remove contaminants like heavy metals and organic pollutants from water through magnetic separation. Supports cell separation and purification in research and therapeutic settings by binding to specific cell surface markers.