Magnetic antidots

• Grant number: 13/50851-7
• Support Opportunities: Regular Research Grants
• Start date: January 01, 2014
• End date: December 31, 2015
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Agreement: Consejo Superior de Investigaciones Cientificas (CSIC)
• Principal Investigator: Kleber Roberto Pirota
• Grantee: Kleber Roberto Pirota
• Principal researcher abroad: Jose Miguel Garcia Martin
• Institution abroad: Consejo Superior de Investigaciones Científicas (CSIC), Spain
• Host Institution: Instituto de Física Gleb Wataghin (IFGW). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Associated research grant: 12/04870-7 - Studies of novel complex and advanced materials, AP.TEM

Abstract

This project concerns the fabrication and characterization of ferromagnetic antidots arrays (composed by transition metal from the Iron group and their alloys) focusing on the dependence of the magnetic properties on the short and long range order, by controlling the symmetry of the array, the hole diameter, and the periodicity. To achieve such a goal, we will prepare magnetic antidot arrays by using three different routes: template assisted (anodized porous alumina) deposition of magnetic thin film; electron-beam lithography and nano-Focused lon Beam lithography. Additional to the structural and morphological characterization, that will be done with the help of X-ray diffraction, atomic force microscopy and electronic microscopy techniques (SEM and TEM), a deep analysis on the magnetic properties will be performed using different characterization techniques: magnetometry, magneto-optical Kerr effect, Magnetic Force Microscopy and magneto-resistance. The results of all these measurements will be understood with the help of micromagnetic simulations, which are extremely useful for these systems. We hope that this cooperative work will open a route to tailor the magnetic properties of antidot arrays. Despite of the scientific interesting results, we strongly hope that this cooperation will reinforce the international collaboration among the various groups involved in this proposal. (AU)