A method for preparing manganese-bismuth alloy film with room temperature exchange bias effect
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 山西师范大学
- Publication Date
- 2020-10-09
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Abstract
Description
technical field
[0001] The invention belongs to the technical field of manganese-bismuth alloy thin film preparation, in particular to a method for preparing a manganese-bismuth alloy thin film with room temperature exchange bias effect by magnetron sputtering. Background technique
[0002] When a material system with a ferromagnetic / antiferromagnetic interface is cooled from an intermediate temperature above the antiferromagnetic Nell temperature but below the ferromagnetic Curie temperature to below the Neel temperature under the action of an external magnetic field, the hysteresis of the material The line will deviate from the origin in the direction of the magnetic field, a phenomenon known as the exchange bias effect. This effect can well overcome the limitation of superparamagnetism and spin pinning in magnetic recording materials, promote the development of miniaturization of information devices, and can be used in microdevices of materials in the fields of home appli...