INVESTIGADORES
RODRIGUEZ TORRES Claudia Elena
artículos
Título:
Surface magnetic contribution in zinc ferrite thin films studied by element-and site-specific XMCD hysteresis-loops
Autor/es:
PM ZÉLIS; G PASQUEVICH; K SALCEDO; FH SÁNCHEZ; C.E. RODRÍGUES TORRES
Revista:
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2016 vol. 419 p. 98 - 104
ISSN:
0304-8853
Resumen:
Element- and site-specific magnetichysteresis 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 ofs pinels tructure are coupled antiferromagnetically between them, and when magneticfield 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 within-plane anisotropy and an effective anisotropy constant value of 12.6kJ/m3. This effective anisotropy is due to thecombining effects of demagnetizing field and,volume and surface magnetic anisotropies KV 3.1 kJ/m3 and KS 16 μJ/m2.
