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Modification of magnetic properties of films using ion and neutral beam implantation

An ion beam and magnetic technology, applied in ion implantation plating, nanotechnology for information processing, coating only a part of the coating supported by a magnetic layer, etc.

Inactive Publication Date: 2012-03-14
APPLIED MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the read / write head of a typical hard disk drive can skim as close as 2nm from the surface of the disk, these topographical changes may be limited

Method used

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  • Modification of magnetic properties of films using ion and neutral beam implantation
  • Modification of magnetic properties of films using ion and neutral beam implantation
  • Modification of magnetic properties of films using ion and neutral beam implantation

Examples

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Embodiment Construction

[0021] Embodiments of the present invention generally provide apparatus and methods for processing magnetic media substrates, such as may be used as storage media in hard disk drives. The apparatus and method change the magnetism of the substrate by applying energy to the substrate in a patterned manner to generate magnetic domains with different properties that can be detected and changed by a magnetic head. These magnetic domains are individually addressable by a magnetic head held near the surface of the substrate such that the magnetic head can detect and affect the magnetism of individual magnetic domains. Embodiments of the present invention produce magnetic domains that are less than about 25 nm in size while maintaining the topography of the substrate.

[0022] The substrates used are usually metal or glass, but can also be metal alloys or composite glass substances such as glass / ceramic hybrids. The substrate is typically coated with a magnetically sensitive material...

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Abstract

Methods and apparatus for forming substrates having magnetically patterned surfaces is provided. A magnetic layer comprising one or more materials having magnetic properties is formed on the substrate. The magnetic layer is subjected to a patterning process in which selected portions of the surface of the magnetic layer are altered such that the altered portions have different magnetic properties from the non-altered portions without changing the topography of the substrate. A protective layer and a lubricant layer are deposited over the patterned magnetic layer. The patterning is accomplished through a number of alternative processes that expose substrates to energy of varying forms.

Description

technical field [0001] Embodiments of the present invention relate to hard drive media and apparatus and methods for preparing the same. More specifically, embodiments of the invention relate to methods and apparatus for forming patterned magnetic media for hard disk drives. Background technique [0002] Magnetic and magnetically sensitive layers have various applications in the electronics industry. In one prominent example, hard drives are special storage media for computers and related devices. Hard drives are found in most desktop and portable computers and can be found in many consumer electronic devices such as media recorders and players, as well as instruments used to collect and record data. Hard drives can also be deployed in arrays for network storage. [0003] Hard drives store information magnetically. The disks in a hard disk drive are provided with magnetic domains that are individually addressable by magnetic heads. The magnetic head moves near the magne...

Claims

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Application Information

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IPC IPC(8): G11B5/84G11B5/82G11B5/73
CPCB82Y10/00C23C14/042C23C14/48G11B5/743G11B5/746G11B5/855G11B5/865C23C14/5833C23C14/5853H01J2237/316H01J2237/31711H01J2237/3165
Inventor 尼尔·玛丽马耶德·A·福阿德
Owner APPLIED MATERIALS INC
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