FORC analysis in arrays of interacting nanodots.

Speaker: Alejandro Rivelles.
Organization: Instituto de Sistemas Optoelectrónicos y Microtecnología (ISOM), de la E.T.S.I. Telecomunicación, Universidad Politécnica de Madrid.

Data: April 22nd, 2022.
Hours: 10.00 hours.
Place: Room B-222 of the ETSI of Telecommunications of the UPM [Cómo llegar]


FORC (first-order reversal curves) diagrams provide a lot of information about magnetic processes in a magnetic material by analysing a large amount of minor hysteresis loops. Interpretation of these diagrams is not easy, specially in complex systems with strongly interacting elements. Therefore, in many situations FORC diagrams are only used as magnetic signatures more than as a characterization technique. Nanotechnology offers the possibility to synthesize ordered arrays of nanoelements where geometry, spacing and composition determine the interaction between elements. FORC diagrams can reveal quantitative information about magnetic coupling and the magnetization process in such structures. In this work we analyse the interaction between Py and Co circular magnetic nanodots with different geometries.