Efek Doping Mangan Terhadap Sifat Magnetik, Ukuran Dan Distribusi Ukuran Na…

ABSTRACT Iron sand is one of Indonesia’s abundant natural resources, one of which is in Riau Province. Iron sand contains a lot of magnetic material such as magnetite, maghemite and hematite. The purpose of this research is to study the morphological and magnetic properties of iron oxide nanoparticles of natural sand from Logas Village, Kuantan Singingi Regency, Riau Province. The iron oxide…