Diffraction of light by a corrugated magnetic grating: experimental results and calculation using a perturbation approximation to the Rayleigh method

Labeke, D. van; Vial, Alexandre; Novosad, Valentyn; Souche, Y.; Schlenker, M.; Santos, Amilton M.

doi:10.1016/0030-4018(95)00598-6

Cited by 25 publications

(14 citation statements)

References 12 publications

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“…If the medium or the magnetization are inhomogeneous, in a scale comparable with the wavelength of light, the description is valid although in general difficult to implement. In this context, several attempts to develop a theory for the MO diffraction from a magnetic grating can be found in the literature [3,4,26]. A simple and general theory for the MO diffraction [27] has recently been used to model successfully the diffraction from an array of Fe microtiles [13].…”

Section: Resultsmentioning

confidence: 99%

Pure magneto-optic diffraction by a periodic domain structure

Costa‐Krämer¹,

Guerrero²,

Melle³

et al. 2003

Nanotechnology

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Magneto-optic diffraction by a periodic domain structure is reported. The periodic domain structure is generated in a flat ferromagnetic metal by coupling it magnetically to an array of magnetic elements. Both exchange and magnetostatic couplings are effective, creating a modulation of the magnetization, although the effect is somewhat larger for magnetostatic coupling, since it favours an antiparallel alignment of adjacent domains. Micromagnetic simulations agree qualitatively with the experimental findings.

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Section: Resultsmentioning

confidence: 99%

Pure magneto-optic diffraction by a periodic domain structure

Costa‐Krämer¹,

Guerrero²,

Melle³

et al. 2003

Nanotechnology

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“…The grating and the set-up were previously described in [2] and [3). The permittivity tensor components of Fe3Si have been determined on a fiat layer by fitting the plots representing the reflectivity R and the relative reflectivity L\R/R between saturated states as a function of the angle of incidence i following respectively references [4] and [5].…”

mentioning

confidence: 99%

Magneto-Optical Diffraction by a Relief Grating

et al. 1996

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Abstract-Coupling between diffraction gratings and magneto-optics can provide a non-conventional means of observation of a domain structure as shown by magnetic patterns typically sized near to the wavelength A.In the case of a simple unidimensional binary relief grating, diffraction can reveal surprising magneto..optical reemission properties. Modelling the behaviour of such an object gives quite satisfying results in the framework of a perturbative approach of the Rayleigh theory.In the present paper we analyse any interesting features (Littrow mounting for diffracted orders, enhancement of magneto-optical signal for various orders) concl:rning the magneto-optical part of the diffracted light for a transverse Kerr effect configuration. When the grating is made of soft magnetic lines deposited on a non magnetic substrate, diffraction measurements and studies give additional statistical informations about the collective magnetic behaviour. A model based on the average magnetisation distribution and the scalar theory of diffraction allows to plot hysteresis loops in good agreement with the experimental ones.

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“…This method was utilized to study far‐field diffraction by random rough surfaces (Maradudin & Mills, 1975; Agarwal, 1977), and was used in various models of near‐field microscopes with isotropic samples (Van Labeke & Barchiesi, 1992; Van Labeke et al ., 1995b; Barchiesi, 1996). In the case of magneto‐optical samples with transversal magnetization, we have utilized this method to describe far‐field diffraction and a magneto‐optical hysteresis loop on a one‐dimensional grating and we obtained good agreement between experimental and theoretical results (Van Labeke et al ., 1996; Vial & Van Labeke, 1998), with heights close to λ/10. We have also studied the images of a one‐dimensional grating with a transversal magnetization (Van Labeke et al ., 1995a).…”

Section: Diffraction By a Multilayered Anisotropic Structurementioning

confidence: 80%

Theoretical comparison of illumination and collection mode images of magneto‐optical dots

Vial¹,

Labeke²

1999

Journal of Microscopy

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We compare theoretical images of the same sample obtained with two different scanning near-field optical microscopes. The sample is a two-dimensional periodic array of magnetic sub-micrometric dots. The magnetization is perpendicular to the sample plane (polar magnetization). The first configuration is a scanning tunnelling optical near-field microscope (STOM) where the tip is used in the detection mode and the sample is illuminated by total internal reflection. The second configuration is an inverted STOM: the tip is used in the emission mode and the diffracted field is far-field detected in one direction. We present the models used to describe the two configurations and then explain the main lines of the formalism used to calculate the diffracted fields by a magneto-optical sample.

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Diffraction of light by a corrugated magnetic grating: experimental results and calculation using a perturbation approximation to the Rayleigh method

Cited by 25 publications

References 12 publications

Pure magneto-optic diffraction by a periodic domain structure

Pure magneto-optic diffraction by a periodic domain structure

Magneto-Optical Diffraction by a Relief Grating

Theoretical comparison of illumination and collection mode images of magneto‐optical dots

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