This article is cited in 8 papers

The enhanced magneto-optical Kerr effect in Co/TiO$_2$ multilayer films

V. V. Polyakov^ab, K. P. Polyakova^ab, V. A. Seredkin^ab, G. S. Patrin<sup>ab

a</sup> L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk
^b Siberian Federal University, Krasnoyarsk

Abstract: Spectral dependences of the polarization plane rotation angle $(\theta_k)$ in the polar Kerr effect in Co/TiO$_2$ multilayer nanocomposite films have been studied in the 400–1000 nm wavelength range. It is established that the sign, magnitude, and shape of the magneto-optical spectrum depend on the dielectric spacer thickness and the number of layers in the structure. The Kerr rotation angle in Co/TiO$_2$ multilayers is significantly greater than that in homogeneous Co films of the same thickness. The angle of rotation of the polarization plane reaches a record high value of $(\theta_k)$ = 7.3$^\circ$ in the Co(5 nm)/TiO$_2$ (17 nm) multilayer structure with number of layers $n$ = 8 at a wavelength of 540 nm.

Received: 04.06.2012

 English version: Technical Physics Letters, 2012, 38:10, 921–923

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