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Information × Registration Number 0222U001010, 0121U108844 , R & D reports Title Functional elements of magnetic memory and sensors based on synthetic antiferromagnetic nanosystems popup.stage_title Head Dzhezherya Yuriy І., Доктор фізико-математичних наук Registration Date 23-01-2022 Organization Institute of Magnetism NAS of Ukraine and MES of Ukraine popup.description2  The Landau-Lifshitz equation for the collective dynamics of magnetization in a nanoparticle of synthetic antiferromagnet (SAF) is analytically solved and the regime of barrier-free switching of its magnetization under the action of a short pulse of a small amplitude magnetic field applied perpendicularly to the plane of SAF is developed. Examples of specific implementations for the formation of such low-power and ultra-fast switching pulses are given. For completely optical, resonant, barrier-free switching of the SAF, the power of the laser pulse required for the operation of recording information was estimated to be 10-100 times less than for rotating the magnetization of a single ferromagnetic particle of similar size. This fact should be attractive for use in elements of magnetic memory. A method for calculating the constants of interlayer exchange interaction of SAF magnetic layers is developed, which is based on determining the tensor of the demagnetization coefficients of individual layers and the total effective demagnetization tensor for the full volume of SAF. To expand the functional properties of SAF nanocells, new materials based on perovskite manganites were synthesized and their transport and thermomagnetic properties were studied. These materials are planned to be used for the production of nanolayers of synthetic antiferromagnets. Product Description popup.authors Gerasimchuk Igor Victorovych Derecha Dmytro O. Dzhezherya Yu І. Koslova Larysa Yе Krаvets Anаtolii F. Paschenko Alexey V Polischuk Dmitriy M Titenko Anatoliy M. Tovstolytkin Oleksandr І. Cherepov Sergiy V Sharai Irina Viktorivna popup.nrat_date 2022-03-09 Close