| 摘要 |
FIELD: measurement equipment.SUBSTANCE: group of inventions relates to the field of magnetic micro- and nanoelements, represents a magnetic element for monitoring of parameters of a magnetic structure of "vortex" type, which may be used as a basis to create a magnetoresistive random access memory, and also the method of such monitoring applicable for diagnostics of nanomaterials. The concept of the invention is as follows: a magnetic element of two ferromagnetic discs of various diameter is formed on a substrate from silicon, and the discs are asymmetrically arranged on each other and separated with a layer from non-magnetic materials, having a disc shape. Dimensions of the magnetic element are such that in a large disc with no induced magnetic field available a vortex state is generated, and in a small disc - a single-domain one. Depending on the angle of magnetic field application, a vortex state is generated in the large disc with certain chirality, and in the small disc - a single-domain state with controlled direction of magnetisation.EFFECT: design of a magnetic element makes it possible to create an asymmetric configuration of a magnetic structure, which is a necessary condition for monitoring vortex parameters as it is generated in a large disc, and provides an opportunity to control chirality of a vortex generated in a large disc, and direction of magnetisation in a small disc It is achieved during application of magnetic field at the angles of 0, 90, 180 or 270 degrees relative to the axis that connects centres of discs.10 cl, 4 dwg, 1 ex |
