Three different routes to synthesize La0.7Sr0.3MnO3 nanoparticles with potential biomedical applications

GUILLERMO ARTURO MUÑOZ MEDINA; JENNY MERA; DIEGO FERNANDO CORAL; CAMILO NOGUERA

Sao Paulo

Congreso; RAU 2020; 2020

Laboratorio Nacional de Luz Sincrotrón

Three different pathways to synthesize La0.7Sr0.3MnO3 nanoparticles have been tested involving the sol-gel process, the ceramic method, and the Pechini?s method. The structure,morphology, and magnetic behavior of the resulting nanoparticles were studied. The nanoparticles obtained via the Pechini?s method exhibited the best crystalline structure, but smallest sizeand reduced magnetic properties as compared to the nanoparticles prepared by the other two methods, whereas the best magnetic properties were found in the particles prepared via the ceramicmethod. These results made it possible to identify the ceramic method as the synthesis route that produces improved nanoparticles with the greatest probability of utility in biomedicalapplications. The last was proved by numerical calculations of the specific absorption rate (SAR). Results shown that SAR of nanoparticles synthesized by ceramic method is most than 30times bigger that SAR for samples synthesized by the other two methods at equal field amplitude and frequency conditions