info:eu-repo/semantics/article
Surface magnetic contribution in zinc ferrite thin films studied by element-And site-specific XMCD hysteresis-loops
Fecha
2016-12Registro en:
Mendoza Zélis, Pedro; Pasquevich, Gustavo Alberto; Salcedo Rodriguez, Karen Lizeth; Sánchez, Francisco Homero; RodrÍguez Torres, Claudia Elena; Surface magnetic contribution in zinc ferrite thin films studied by element-And site-specific XMCD hysteresis-loops; Elsevier Science; Journal of Magnetism and Magnetic Materials; 419; 12-2016; 98-104
0304-8853
CONICET Digital
CONICET
Autor
Mendoza Zélis, Pedro
Pasquevich, Gustavo Alberto
Salcedo Rodriguez, Karen Lizeth
Sánchez, Francisco Homero
RodrÍguez Torres, Claudia Elena
Resumen
Element-And site-specific magnetic hysteresis-loops measurements on a zinc ferrite (ZnFe2O4) thin film were performed by X-ray magnetic circular dichroism. Results show that iron in octahedral and tetrahedral sites of spinel structure are coupled antiferromagnetically between them, and when magnetic field is applied the magnetic moment of the ion located at octahedral sites aligns along the field direction. The magnetic measurements reveal a distinctive response of the surface with in-plane anisotropy and an effective anisotropy constant value of 12.6 kJ/m3. This effective anisotropy is due to the combining effects of demagnetizing field and, volume and surface magnetic anisotropies KV =3.1 kJ/m3 and KS =16 μJ/m2.