ALEXANDRU-HORATIU MARINCAS, FIRUTA GOGA, ROXANA DUDRIC, CRINA SUCIU, ALEXANDRA AVRAM, SORIN AUREL DORNEANU, PETRU ILEA STRUCTURAL AND MAGNETIC PROPERTIES OF LA0.9SR0.1MNO3 NANOPARTICLES PREPARED VIA SOL-GEL PROCESS In the present paper, nanosized La0.9Sr0.1MnO3 particles were synthesized via a facile modified sol-gel route using two cheap and environmentally friendly organic chemicals, namely sucrose and pectin. The obtained powders were characterized by thermo gravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM), and magnetic measurements. The optimal temperature for obtaining nanosized particles was determined as 1000°C and 1h dwell time was enough to obtain crystalline nanoparticles. Magnetic properties of samples calcined with different calcination period were analyzed and both samples shown a transition temperature around 274 K.
Keywords: La0.9Sr0.1MnO3; sol-gel preparation; thermal analysis; crystal structure; magnetic materials