2024-03-28T13:01:31Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/862872017-02-27T08:18:48Zcom_10261_89com_10261_3com_10261_46col_10261_342col_10261_299
Magnetophotonic response of three-dimensional opals
Caicedo, José Manuel
Pascu, Oana
López-García, M.
Canalejas-Tejero, Víctor
Blanco Montes, Álvaro
López, Cefe
Fontcuberta, Josep
Roig Serra, Anna
Herranz, Gervasi
Three-dimensional magnetophotonic crystals (3D-MPCs) are being postulated as appropriate platforms to tailor the magneto-optical spectral response of magnetic materials and to incorporate this functionality in a new generation of optical devices. By infiltrating self-assembled inverse opal structures with monodisperse nickel nanoparticles we have fabricated 3D-MPCs that show a sizable enhancement of the magneto-optical signal at frequencies around the stop-band edges of the photonic crystals. We have established a proper methodology to disentangle the intrinsic magneto-optical spectra from the nonmagnetic optical activity of the 3D-MPCs. The results of the optical and magneto-optical characterization are consistent with a homogeneous magnetic infiltration of the opal structure that gives rise to both a red-shift of the optical bandgap and a modification of the magneto-optical spectral response due to photonic bandgap effects. The results of our investigation demonstrate the potential of 3D-MPCs fabricated following the approach outlined here and offer opportunities to adapt the magneto-optical spectral response at optical frequencies by appropriate design of the opal structure or magnetic field strength. © 2011 American Chemical Society.
2013-11-11T14:32:41Z
2013-11-11T14:32:41Z
2011
2013-11-11T14:32:41Z
artículo
ACS Nano 5(4): 2957-2963 (2011)
http://hdl.handle.net/10261/86287
10.1021/nn1035872
eng
info:eu-repo/grantAgreement/EC/FP7/248855
S2009/MAT-1756 PHAMA
closedAccess
American Chemical Society