SYNTHESIS AND ANALYSIS OF Lao.9MnO3 BY COMBUSTION METHOD

Abstract

The La_o.9MnO₃ has been synthesized from lanthanum acetylacetonate, manganese acetylacetonate and urea by combustion method at 800^oC. The analysis of the synthesized La_o.9MnO₃ show it to be a semi-conducting nanopolycrystalline material having orthorhombic geometry with unit-cell parameters: a = 5.50335A^o; b = 5.7250A^o; c = 7.70028A^o and with Mn⁴⁺ content of 12%. The mean-size of the particles of La_o.9MnO₃ was obtained from TEM analysis at 80nm.


KEY WORDS: La_o.9MnO₃, acetylacetonate, nanopolycrystalline, combuston method, semi-conductor.


Global Jnl Pure & Applied Sciences Vol.10(1) 2004: 121-124