Diffraction of light in magnetic stripe-structure

Abstract

The direct observation of the light diffraction in magnetic stripe domains of transparent MgMn ferrite films was made using the Faraday effect. Diffractional effects in these films can find application as magnetic displays, in which readout can be performed by diffractional technique without magnetic colloid.

Fraunhofer diffraction from magnetic domains in garnet films

“…When such specimens a r e set up for Fraunhofer diffraction employing a crossed polarizer and analyzer adjacent domains a r e effectively in antiphase with respect to one another. The resulting diffraction pattern represents the Fourier transform of the domain distribution, Patterns from parallel stripe-structures have been reported by Telesnin et al (1) working with Mg-Mn ferrite. Independently we have studied the diffraction patterns of a variety of domain structures in garnet films and the effects on them of applied magnetic fields.…”

Toroidal Order in Magnetic Metamaterials

“…Diffraction MOKE (DMOKE), also called Bragg-MOKE or non-specular MOKE, was first observed in 1963 436 as an optical diffraction phenomenon related to the presence of a 'ferromagnetic grating' 437,438 . Since then, the technique has proven to provide insight into re-magnetisation processes and micromagnetic configurations of periodic magnetic structures such as naturally occurring periodic domain pattern iii436, [438][439][440][441] as well as synthetic one-or two-dimensional grating-like structures 406,[442][443][444][445][446][447][448][449][450][451][452][453][454] . While here, only a brief outline of the concept is given, an in-depth review or extensive application can be found in Refs.…”

Experimental and Computational Methods

“…Diffraction MOKE (DMOKE), also called Bragg-MOKE or non-specular MOKE, was first observed in 1963 [40] as an optical diffraction phenomenon related to the presence of a 'ferromagnetic grating' [41,42]. Since then, the technique has proven to provide insight into re-magnetisation processes and micromagnetic configurations of periodic magnetic structures such as naturally occurring periodic domain pattern 3 [40,[42][43][44][45] as well as synthetic one-or two-dimensional grating-like structures [7,[46][47][48][49][50][51][52][53][54][55][56][57][58]. While here, only a brief outline of the concept is given, an in-depth review or extensive application can be found in Refs.…”