Study of La1-x Sr x MnO3 nanoparticles: synthesis, magnetic properties and their hyperthermia applications

In this investigation, we synthesized nano-sized perovskite LSMO and Cu-doped LSMCx materials using the sol-gel method, exhibiting appropriate Curie temperatures and magnetic attributes conducive to the application of self-controlled hyperthermia. Centrifugal separation has been used to reduce particle size distribution and thus analyze magnetic properties dependent on mean particle size. Structural analysis was conducted using X-ray Powder Diffraction. The composition was determined through X-ray Photoelectron Spectroscopy, while topographical features were scrutinized employing Scanning Electron Microscopy. Magnetic properties were evaluated employing a Vibrating Sample Magnetometer, and the magneto-thermal characteristics were delineated using an Alternating Magnetic Field hyperthermia system. Notably, this study marks the pioneering identification of La1-x Sr x MnO3 as a viable material candidate for auto-regulated hyperthermia, based on its magnetization range (5-20 emu/g) and Curie temperature span (287-357 K) that are changing with the mean particle size. Through comprehensive analysis, we thoroughly investigated its hyperthermia attributes, thereby contributing significant insights to the existing literature.