Search academic texts

Information × Registration Number 0224U000869, 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 14-01-2024 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 a synthetic antiferromagnet (SAF) was analytically solved, and a mode of barrierless switching of its magnetization under the action of a short pulse of a small-amplitude magnetic field applied perpendicular to the plane of the SAF was developed. Examples of specific implementations for the formation of such low-power and ultra-fast switching pulses are given. For fully optical, resonant, barrier-free switching of SAF, the power of the laser radiation pulse required for the operation of recording information was estimated, which turned out to be 10-100 times less than for the rotation of the magnetization of a separate ferromagnetic particle of a similar size. This circumstance should be attractive for use in magnetic memory elements. A method of calculating the constants of the interlayer exchange interaction of the magnetic layers of the SAF was developed, which is based on the determination of the tensor of the demagnetization coefficients of individual layers and the general effective tensor of demagnetization for the entire volume of the SAF. To expand the functional properties of SAF nanocells, new materials based on perovskite manganites were synthesized and their transport and thermomagnetic properties were investigated. These materials are planned to be used for the production of nanolayers of synthetic antiferromagnets Product Description popup.authors Vladyslav Y. Borynskiy Roman Verba Kalyta Viktor Mykhailovych Kravets Anatolii Fedorovych Paschenko Oleksii V. Polishchuk Dmytro M. Skirta Yurii B. Tovstolytkin Oleksandr І. Cherepov Sergiy V Sharai Iryna V. popup.nrat_date 2024-01-14 Close