One-step synthesis of Mn3O4 nanoparticles: structural and magnetic study.
One-step room-temperature synthesis of nanocrystalline Mn3O4 hausmannite, without heating posttreatment, was carried out from a simple dissolution of manganese(II) acetate in a mixture of N,N'-dimethylformamide (DMF) and water. Homogeneous nanocrystals like rods were obtained, with an average width and length of 6.6+/-1.2 nm and 17.4+/-4.1 nm, respectively, and a preferential growth along the 001 direction. Magnetization measurements on a powdered sample showed ferrimagnetic behavior at low temperatures. Under zero-field cooling (ZFC) measurement at 100 Oe, the observed blocking temperature (T(B)) was 37 K.
Vázquez-Olmos
América
A
Centro de Ciencias Aplicadas y Desarrollo Tecnológico, México, DF 04510, Mexico. amer@aleph.cinstrum.unam.mx
Redón
Rocío
R
Rodríguez-Gattorno
Geonel
G
Esther Mata-Zamora
M
M
Morales-Leal
Francisco
F
Fernández-Osorio
Ana L
AL
Saniger
José M
JM