Magnetic head, hard disk device, and method for transferring two-dimensional atomic crystal layer to head slider of magnetic head

Patent metadata

Field	Value
Publication number	US-9978402-B2
Application number	US-201615255105-A
Country	US
Kind code	B2
Filing date	Sep 1, 2016
Priority date	Mar 18, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A magnetic head includes a head slider. The head slider includes a contact surface corresponding to a disk body, and the contact surface is a flat surface. The contact surface is coated with at least one smooth atomic-scale coating formed by a two-dimensional atomic crystal material. The head slider atomically contacts with the disk body.

First claim

The invention claimed is:

1. A hard disk device, comprising:
a disk body;
a magnetic head comprising a head slider having a contact surface corresponding to the disk body;
wherein:
the contact surface is a flat surface;
the contact surface is coated with at least one atomic-scale smooth coating that is formed by a two-dimensional atomic crystal material;
the disk body comprises a coating of at least one protection layer, and the protection layer comprises an atomic-scale smooth surface that is formed by a two-dimensional atomic crystal material or diamond-like carbon nanofilm;
the head slider atomically contacts with the disk body; and
when the magnetic head is reading data, the magnetic head atomically contacts with the disk body under an effect of van der Waals force; when a balance of an atomic contact is achieved, the van der Waals force is at a minimum interaction potential.

2. A hard disk device, comprising:
a disk body;
a magnetic head comprising a head slider having a contact surface corresponding to the disk body;
wherein:
the contact surface is an atomic-scale smooth surface;
the contact surface is coated with at least one atomic-scale smooth coating that is formed by a two-dimensional atomic crystal material to result in an atomic-scale smooth head surface;
the disk body comprises a coating of at least one protection layer;
the protection layer comprises an atomic-scale smooth disk surface that is formed by a two-dimensional atomic crystal material or diamond-like carbon nanofilm;
the atomic-scale smooth head surface is parallel to the atomic-scale smooth disk surface; and
when in use, the atomic-scale smooth head surface atomically contacts with the atomic-scale smooth disk surface.

3. The magnetic head of claim 2 , wherein the head slider comprises a side surface which is coated by the atomic-scale smooth coating.

Assignees

• Univ Tsinghua

Inventors

• Zheng Quanshui
• Zhang Shoumo

Classifications

• C01B32/188

  by epitaxial growth · CPC title

• G11B5/3106 Primary

  where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination (G11B5/3133 takes precedence) · CPC title

• C01B32/186

  by chemical vapour deposition [CVD] · CPC title

• G11B5/255

  comprising means for protection against wear {(in thin film structures G11B5/3106)} · CPC title

• G11B5/3163

  Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers · CPC title