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Two-dimensional square ferromagnetic material, preparation method thereof, storage unit and method for regulating and controlling storage unit to identify storage data

A ferromagnetic material and storage unit technology, which is applied in the field of information storage and can solve the problems of reducing the physical volume of high-density storage devices and failing to meet actual needs.

Inactive Publication Date: 2020-10-02
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although storage devices based on traditional magnetic media, dielectrics, ferroelectrics, and ferromagnetic media can further increase storage density and reduce the physical volume of high-density storage devices through three-dimensional stacking methods, they are far from meeting people's actual needs and future The needs of technological development

Method used

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  • Two-dimensional square ferromagnetic material, preparation method thereof, storage unit and method for regulating and controlling storage unit to identify storage data
  • Two-dimensional square ferromagnetic material, preparation method thereof, storage unit and method for regulating and controlling storage unit to identify storage data
  • Two-dimensional square ferromagnetic material, preparation method thereof, storage unit and method for regulating and controlling storage unit to identify storage data

Examples

Experimental program
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Effect test

preparation example Construction

[0035] The present invention also provides a preparation method of the two-dimensional tetragonal ferromagnetic material, comprising the following steps:

[0036] Depositing a layer of Fe atoms on the substrate to obtain a substrate covered with Fe atoms;

[0037] Under the condition that the initial pressure is 8-12 atmospheres, the substrate coated with Fe atoms is reacted with chlorine gas at 950-1050° C., and then the substrate is removed to obtain the two-dimensional tetragonal ferromagnetic material.

[0038]The invention deposits the Fe atomic layer on the substrate to obtain the Fe atom-coated substrate. In the present invention, the substrate is preferably a quartz substrate; the deposition method is preferably a magnetron sputtering method; the present invention does not have any special restrictions on the process of the magnetron sputtering. The well-known process of depositing Fe can be carried out by magnetron sputtering to ensure the obtained Fe atomic layer wi...

Embodiment 1～10

[0071] Preparation method of two-dimensional tetragonal ferromagnetic material layer:

[0072] Using the magnetron sputtering method, a single layer of Fe atomic layer is deposited on the quartz substrate to obtain a substrate covered with Fe atoms;

[0073] Place the Fe-atom-coated substrate in an anti-corrosion hyperbaric chamber, introduce chlorine gas until the pressure of the hyperbaric chamber rises to 10 atmospheres, heat up to 1000°C, react for 2 hours, cool down naturally, and mechanically peel off the substrate. A single layer of two-dimensional tetragonal ferromagnetic material is peeled off from the quartz substrate to obtain a two-dimensional tetragonal ferromagnetic material layer;

[0074] Preparation method of storage unit:

[0075]After the substrate 1 is cleaned and dried, a first insulating layer 2 is deposited on the substrate 1, and then the prepared two-dimensional tetragonal ferromagnetic material layer is transferred to the upper surface of the first i...

Embodiment 11

[0083] At a temperature of 55K, the nanowire layer 7 of the storage unit described in Examples 1 to 10 is fed with a pulse current to generate a magnetic field, and the electron spin of the two-dimensional square ferromagnetic material in the two-dimensional square ferromagnetic material layer is changed. direction, so that the bandgap width of the two-dimensional tetragonal ferromagnetic material changes in the range of 0eV to 1.2eV;

[0084] A voltage of 5 mV is applied between the first electrode layer 4 and the first electrode layer 5, the current value is measured, and the stored data of the memory cell is identified through the current value.

[0085] Figure 5 It is a test result diagram of the storage performance retention of the storage unit described in Embodiment 1 of the present invention at a temperature of 55K, which is represented by Figure 5 It can be seen that the current between the first electrode and the second electrode is small when the spin of the two-...

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Abstract

The invention relates to the technical field of information storage, in particular to a two-dimensional square ferromagnetic material, a storage unit and a method for regulating and controlling storage data of the storage unit. The invention provides a two-dimensional square ferromagnetic material which is FeCl, the space group of the two-dimensional square ferromagnetic material is NO.129: P4 / nmm, and the lattice parameters of the two-dimensional square ferromagnetic material are as follows: a = b = 0.355 nm, and c = 1.826 nm. When the two-dimensional square ferromagnetic material is used asthe material of the ferromagnetic material layer of the storage unit, the energy consumption can be reduced, the storage density and reliability of the storage unit can be improved, and the flexibility can be realized.

Description

technical field [0001] The invention relates to the technical field of information storage, in particular to a two-dimensional square ferromagnetic material and a preparation method thereof, a storage unit and a method for regulating and controlling the storage unit to identify and store data. Background technique [0002] Memory is widely used in people's production and life, mainly to store information and data through some kind of medium. The current general-purpose storage devices are mainly based on binary data storage. Generally, people regulate certain properties of the storage medium through external fields, and identify the stored data by testing certain properties of the medium. There are many types of storage media, including magnetic media, dielectric media, ferroelectric media, and ferromagnetic media, to name a few. In order to improve the reliability of stored data, the physical volume of the storage medium always needs to be maintained within a certain rang...

Claims

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Application Information

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IPC IPC(8): C01G49/10H01L27/22H01L43/08H01L43/10B82Y10/00B82Y30/00B82Y40/00
CPCC01G49/10B82Y10/00B82Y40/00B82Y30/00C01P2002/76C01P2002/77C01P2004/20C01P2004/64C01P2004/60H10B61/00H10N50/10H10N50/01H10N50/85
Inventor 侯鹏飞刘云霞周攀杨琼孙立忠欧阳晓平
Owner XIANGTAN UNIV
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