Tổng hợp perovskit LaCrO3 bằng phương pháp đốt cháy gel ở nhiệt độ thấp

Abstract

LaCrO₃ powder has been synthesised at low temperature (700^oC) by the combustion of gel prepared from polyvinyl alcohol (PVA) and metal nitrates. LaCrO₃ characterization is examined by X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TG-DTA), field emission scanning electron microscopy (FESEM) and BET (Brunaure-Emmet-Teller) measurements.  The obtained sample under optional preparative conditions has nano scale with relatively large specific square area ( ~14 m²/g).