Correlation of magnetic properties, morphology and structural parameters in Mn0.5Zn0.5Fe2O4 nanoparticles

J. PRADO; J. LOPEZ; O. MARIN; A. MENDOZA; M. E. GOMEZ; P. PRIETO

Rio de Janeiro

Conferencia; 11th International Conference on Advanced Materials - ICAM2009; 2009

Sociedade Brasileira de Pesquisa em Materiais

The effect of structural and morphology parameters on the magnetic behavior of Mn0.5Zn0.5Fe2O4 was discussed. Nanoparticles have been prepared by chemical co-precipitation method. The morphology structure was analyzed via Atomic Force Microscopy (Fig. 1). Zero-field-cooling and field-cooling magnetization measurements were performed using a Physical Property Measurement System (PPMS) to investigate the magnetic properties of nanoparticles (Fig 2). The ZFC magnetization measurements showed a typical superparamagnetic behavior. Considering a log-normal distribution of energy barriers in an assembly of ultrafine magnetic particles blocking temperature, anisotropy energy density, and average magnetization of particle were obtained.