Unlock instant, AI-driven research and patent intelligence for your innovation.

Giant spin Hall angle alloy material and preparation method and application thereof

A technology of alloy materials and zirconium alloys, which is applied in the field of giant spin Hall angle alloy materials and its preparation, can solve the problems of inability to realize the preparation and application of magnetron sputtering, expensive growth process of topological materials, and enhancement of spin Hall angle of materials. and other problems, to achieve the effect of reducing the spin diffusion length at room temperature, reducing material costs, and increasing the spin Hall angle

Pending Publication Date: 2021-06-22
ZHEJIANG HIKSTOR TECHOGY CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the existing alloy materials can satisfy the stronger spin Hall effect. People have obtained a spin Hall angle greater than 1 in topological insulators (Bi2Se3) and topological semimetal materials (TaAs, W3Ta, etc.), but The topological material growth process is very expensive and difficult to mass-produce. It usually requires an ultra-high vacuum molecular beam epitaxy system or high temperature to prepare small-area single crystal materials, and it is not yet possible to achieve large-area preparation and application of magnetron sputtering.
Generally, 5d heavy metal alloys are used as buffer layers in MRAM devices, which need to have both excellent temperature stability and spin-orbit torque effects. The current 5d heavy metal alloy materials mainly consider the charge flow caused by spin-orbit coupling and the spin current. conversion (spin Hall effect), no orbital Hall effect is used to enhance the spin Hall angle of the material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Giant spin Hall angle alloy material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A giant spin Hall angle alloy material, comprising: a 5d heavy metal-zirconium alloy film, wherein the zirconium element composition is 0.01-0.5; and on the 5d heavy metal-zirconium alloy film Soft magnetic film layer.

[0029] The size of the Hall angle is related to the type of 5d heavy metal element and the molar ratio of Zr element. The maximum room temperature spin Hall angle of the giant spin Hall angle alloy material exceeds 0.4, which can be generated by spin pumping in the ferromagnetic film. The spin current is injected into the 5d heavy metal-zirconium alloy film, and the inverse spin Hall voltage (VISHE) is tested to obtain the spin Hall angle of the 5d heavy metal-zirconium alloy film, which has a large spin-orbit moment.

[0030] Among them, the 5d heavy metal-zirconium alloy film uses 5d heavy metal with a purity higher than 99.995% and zirconium with a purity higher than 99.95% as raw materials. 5d heavy metals refer to metals containing 5d orbital elec...

Embodiment 2

[0038] A method for preparing a giant spin Hall horn alloy material, comprising: growing a 5d heavy metal-zirconium alloy thin film on a nanoscale flat surface based on physical vapor deposition technology; growing a 5d heavy metal-zirconium alloy thin film based on physical vapor deposition technology A soft magnetic film layer is grown.

[0039] The 5d heavy metal-zirconium alloy is deposited on a nanoscale flat surface substrate by physical vapor deposition technology to form a 5d heavy metal-zirconium alloy thin film, and then a soft magnetic thin film layer is deposited on the 5d heavy metal-zirconium alloy thin film by physical vapor deposition technology. Spin Hall horn alloy materials.

[0040] In some examples, the substrate requires one or more of acetone, alcohol, and deionized water to clean.

[0041] It is used to clean the surface of the substrate to make the surface of the substrate clean.

[0042] In some examples, the substrate is one or more of a semiconduc...

Embodiment 3

[0061] An application of a giant spin Hall angle alloy material, based on the application of any giant spin Hall angle alloy material in spintronic high-density SOT-MRAM memories, spin sensors and quantum computing.

[0062] It can be used as some element materials that require high charge current-spin current conversion efficiency.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of communication, and discloses a giant spin Hall angle alloy material and a preparation method and application thereof. The giant spin Hall angle alloy material comprises a 5d heavy metal-zirconium alloy film and a soft magnetic film layer on the 5d heavy metal-zirconium alloy film, wherein the zirconium element component is 0.01-0.5. According to the giant spin Hall angle alloy material and the preparation method and application thereof, the spin Hall angle of the 5d heavy metal-zirconium alloy film at room temperature is significantly increased (the maximum is 200% or above) compared with that of a corresponding simple substance 5d heavy metal film, and the room temperature spin diffusion length is reduced; and compared with the spin Hall effect of a simple substance 5d heavy metal material, the spin flow generation efficiency is improved, and meanwhile the material cost is reduced.

Description

technical field [0001] The invention relates to the technical field of spin electron new materials, in particular to a giant spin Hall horn alloy material and its preparation method and application. Background technique [0002] With the rapid development of information technology, the miniaturization and low power consumption of traditional electronic devices are facing severe bottlenecks due to the existence of current Joule heat. Electron spin is another property of electrons besides charge, which can be used to transmit and process information, that is, spintronics (Spintronics) was born. Spintronics transmits information with extremely low power consumption, and can even complete the processing and storage of quantum information. It is an ideal medium for building quantum information chips. Spin Hall Effect (Spin Hall Effect) is the effect of longitudinal spin current under the action of spin-orbit coupling and lateral current. So that the sample does not generate Jou...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C14/16C23C14/35H01F1/14H01F41/18
CPCC23C14/165C23C14/35H01F41/18H01F1/14
Inventor 孟皓迟克群金立川唐晓莉
Owner ZHEJIANG HIKSTOR TECHOGY CO LTD