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Magnetic recording medium with multiple combination functions and preparation method thereof

A technology of magnetic recording media and composite functions, which is applied in the fields of nanoscience and magnetic material science to achieve the effects of good lubricating performance, enhanced magnetic recording storage density, and high hardness

Inactive Publication Date: 2009-05-06
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no literature reporting that the research target is a single recording medium film with good mechanical, lubricating and magnetic properties

Method used

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  • Magnetic recording medium with multiple combination functions and preparation method thereof
  • Magnetic recording medium with multiple combination functions and preparation method thereof
  • Magnetic recording medium with multiple combination functions and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: Selecting the Fe target, Pt target and B with a purity of 99.99% 4 Target C is a sputtering target, and the base distances of the three targets are adjusted to 6.5 cm, 6.1 cm and 6.0 cm, respectively. The background vacuum of the sputtering chamber was evacuated to 2.0×10 -4 Pa, the film is deposited on a cleaned ordinary Si wafer as the substrate. The flow rate of argon gas is controlled by a mass flow meter to be 50 sccm. Before the formal sputtering, the argon gas is used to start the sputtering target. After the glow is stable, adjust the main valve of the sputtering chamber to stabilize the working pressure of the sputtering chamber at 0.5 Pa. Adjust sputtering voltage and sputtering current to make Fe target, Pt target and B 4 C target sputtering power is about 36W, 50W and 75W respectively.

[0023] 1. Rotate the sample stage so that the spare Si sheet on the sample stage is facing the B below it. 4 C target, deposit a 600 second(s) B 4 C botto...

Embodiment 2

[0029] Embodiment 2: The target material, the base distance of the target, the background vacuum of the sputtering chamber, the flow rate of argon gas, the working pressure, and the sputtering power of the three targets are the same as in the embodiment 1.

[0030] 1. Rotate the target stage so that the spare Si sheet on the sample stage is facing the B below it. 4 C target, deposit a 600 second(s) B 4 C bottom layer.

[0031] 2. Rotate the target platform to deposit B 4 The Si sheet at the bottom layer of C is directly opposite to the Fe target below, and a layer of Fe is deposited for 21s.

[0032] 3. Continue to rotate the target platform so that the Si sheet is facing the Pt target below it, and deposit a layer of Pt for 6 seconds.

[0033] 4. Rotate the target stage back, rotate the Si sheet above the Fe target, and deposit a layer of Fe for 21s.

[0034] 5. Rotate the target platform back, and rotate the Si piece to B 4 On top of the C target, deposit a layer of B f...

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Abstract

The disclosed magnetic recording medium with multiple composite functions is prepared as: depositing one B4C film as bottom on a silicon slice with magnetron sputtering technique, then forming the B4C protective film and FePt magnetic layer composed by Fe-Pt-Fe / Pt-Fe-Pt / Fe-Pt film, and taking annealing process for the product. This invention introduces the magnetic medium with well hardness and lubrification, and improves storage density.

Description

technical field [0001] The invention relates to a magnetic recording medium with multiple composite functions and a preparation method thereof, belonging to the fields of electronic information technology, magnetic material science and nanometer science and technology. technical background [0002] Such as figure 1 As shown, the magnetic recording medium currently used in computer hard disks is usually a multilayer structure. At present, hard disk disks generally use an Al substrate, then a Cr bottom layer, and an amorphous NiP layer between the Cr bottom layer and the magnetic layer. On top of the magnetic layer is a protective layer and then a lubricant layer. The last two layers increase the distance between the magnetic head and the recording medium, thus reducing the storage density. In order to obtain a novel protective layer and an ultra-thin lubricating layer to reduce the distance between the magnetic head and the recording medium, a lot of research has been carri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/66G11B5/72G11B5/84G11B5/851
Inventor 王浩杨辅军曹歆汪汉斌
Owner HUBEI UNIV