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Full-Text Articles in Nanoscience and Nanotechnology

Modification Of Bi:Yig Film Properties By Substrate Surface Ion Pre-Treatment, A. Shaposhnikov, A. Prokopov, A. Karavainikov, V. Berzhansky, T. Mikhailova, V. Kotov, D. Balabanov, I. Sharay, O. Salyuk, Mikhail Vasiliev, V. Golub Apr 2015

Modification Of Bi:Yig Film Properties By Substrate Surface Ion Pre-Treatment, A. Shaposhnikov, A. Prokopov, A. Karavainikov, V. Berzhansky, T. Mikhailova, V. Kotov, D. Balabanov, I. Sharay, O. Salyuk, Mikhail Vasiliev, V. Golub

Mikhail Vasiliev

The effect of a controlled ion beam pre-treatment of (1 1 1)-oriented Gd3Ga5O12 substrates on the magneto-optical properties and surface morphology of the ultrathin bismuth-substituted yttrium–iron garnet films with a composition Bi2.8Y0.2Fe5O12 was studied. It has been shown that the observed sign inversion of magneto-optical effects (Faraday rotation and magnetic circular dichroism) observed in films that were deposited on the GGG substrate pre-treated by 1 keV and 4 keV Ar+ ion beams is a result of the substrate surface amorphization caused by the ion bombardment.


Magnetic Heterostructures With Low Coercivity For High-Performance Magneto-Optic Devices, V. Kotov, A. Popkov, S. Soloviev, Mikhail Vasiliev, Kamal Alameh, Mohammad Alam, D. Balabanov Apr 2015

Magnetic Heterostructures With Low Coercivity For High-Performance Magneto-Optic Devices, V. Kotov, A. Popkov, S. Soloviev, Mikhail Vasiliev, Kamal Alameh, Mohammad Alam, D. Balabanov

Mikhail Vasiliev

In this work, we analyse the method of forming magneto-optically active heterostructures based on magnetic layers with different magnetic properties. Layers of one type possess a high effective constant of uniaxial magnetic anisotropy for which the condition is fulfilled, where Ku is the constant of uniaxial magnetic anisotropy and is the demagnetizing energy, and layers of the second type used possess in-plane or quasi-in-plane magnetization, in which the condition holds true. The layers of the first type, which we refer to as layers of positive effective uniaxial magnetic anisotropy, may have the composition Bi2Dy1Fe4Ga1O12 and the layers of second type ...