Preparation method of Nd-Fe-Co ternary alloy magnetic nanowire

A magnetic nanometer and ternary alloy technology, applied in the application of magnetic film to substrate, nanostructure application, etc., can solve the problems that the uniformity of structure affects the quality of the film, and the law of influence is complex, and achieves uniform size and high deposition rate. , the effect of improving coercivity

Active Publication Date: 2018-02-16
HEBEI UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

The influence of these factors is also very complicated, so the quality of target structure and structure uniformity will also affect the quality of film formation through sputtering.

Method used

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  • Preparation method of Nd-Fe-Co ternary alloy magnetic nanowire
  • Preparation method of Nd-Fe-Co ternary alloy magnetic nanowire
  • Preparation method of Nd-Fe-Co ternary alloy magnetic nanowire

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Experimental program
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Effect test

Embodiment 1

[0042] Step 1: Preparation of AAO template

[0043] In this paper, the AAO template method was used to prepare nanowires. The AAO template is prepared by secondary anodic oxidation in oxalic acid solution by using high-purity aluminum foil with a purity of 99.999% and a thickness of 0.3 mm. It mainly includes several processes of aluminum sheet pretreatment, secondary anodic oxidation, aluminum substrate removal, and hole expansion to remove barrier layer.

[0044] (1) Aluminum sheet pretreatment

[0045] Cutting: Cut the aluminum foil into a small disc with a diameter of 20mm, making it close to the diameter of the gasket used for oxidation.

[0046] Annealing: The aluminum sheet is then annealed in a vacuum tube furnace under the protection of an argon atmosphere. The annealing temperature is 500°C, and the annealing time is set to 5h. After the annealing is completed, it is cooled to room temperature with the furnace.

[0047] Washing: wash the aluminum sheet in acetone ...

Embodiment 2

[0065] Change the concentration of each component in Example 1 to C(NdCl 3 ·6H 2 O)=0.1mol / L, C(FeCl 2 4H 2 O)=0.35mol / L, C(CoCl 2 ·6H 2 O)=0.1mol / L, C(H 3 BO 3 )=0.48mol / L, C(C 2 h 5 NO 2 )=0.2mol / L, C(C 6 h 8 o 6 )=0.023mol / L, and others are all the same as in Example 1.

[0066] In this embodiment, the metal atomic ratio is Tb:Fe:Co=2:7:2, and the mass ratio is about 5:10:4.

Embodiment 3

[0068] Change the concentration of each component in Example 1 to C(NdCl 3 ·6H 2 O)=0.4mol / L, C(FeCl 2 4H 2 O)=0.35mol / L, C(CoCl 2 ·6H 2 O)=0.05mol / L, C(H 3 BO 3 )=0.48mol / L, C(C 2 h 5 NO 2 )=0.2mol / L, C(C 6 h 8 o 6 )=0.023mol / L, the deposition voltage was changed to 2V, the deposition time was changed to 1h, and the others were the same as in Example 1.

[0069] In this embodiment, the metal atomic ratio is Tb:Fe:Co=8:7:1, and the mass ratio is about 4:5:1.

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Abstract

The invention relate to a preparation method of an Nd-Fe-Co ternary alloy magnetic nanowire. The method comprises the following steps of (1) mixing NdC<13>.6H<2>O, FeC<12>.4H<2>O, CoC<12>.6H<2>O and deionized water to prepare a Nd<x>Fe<y>Co<z> deposition liquid; and (2) performing electrochemical deposition by employing a DC voltage-stabilization power supply under a DC voltage of 1.5-2V and by taking graphite as a positive electrode, an AAO template as a negative plate and the Nd-Fe-Co deposition liquid prepared in the previous step as an electrolyte, and finally obtaining the Nd-Fe-Co ternary alloy magnetic nanowire, wherein a deposition current is (0.5-20) mA, and deposition time is 1-2 hours. The nanowires are huge in quantity and high in deposition rate, and the nanowires are arrangedin parallel, are high in order, uniform in diameter and large in length-diameter ratio.

Description

technical field [0001] The technical scheme of the invention relates to a magneto-optical material containing rare earth metals and magnetic transition metals, in particular to a preparation method of Nd-Fe-Co ternary alloy magnetic nanowires. Background technique [0002] With the continuous development of information technology, information storage technology requires ultra-high density and storage speed. The recording density of traditional magnetic recording media is close to the superparamagnetic limit, while the recording speed is limited and the magnetization reversal speed is slow. Therefore, the pursuit of ultra-high density and ultra-high storage speed recording technology has become the current information technology field. Research hotspots. [0003] Magneto-optical storage material is a carrier material that utilizes the Kerr magneto-optical effect to record, rewrite, and delete information by magnetic writing and optical reading. It combines the advantages of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/30C25D3/56
CPCC25D3/562H01F41/30
Inventor 崔春翔康立丛杨薇郭晶张袁袁
Owner HEBEI UNIV OF TECH
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