Unlock instant, AI-driven research and patent intelligence for your innovation.

Magnetic media with improved magnetic grain size distribution and intergranular segregation

A technology of magnetic recording medium and intermediate layer, applied in the field of magnetic medium

Active Publication Date: 2019-02-15
WESTERN DIGITAL TECH INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] While this conventional magnetic recording disk drive works, there are disadvantages

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Magnetic media with improved magnetic grain size distribution and intergranular segregation
  • Magnetic media with improved magnetic grain size distribution and intergranular segregation
  • Magnetic media with improved magnetic grain size distribution and intergranular segregation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] figure 1 A side view of an exemplary embodiment of a portion of a magnetic recording device 100 is depicted. In the embodiment shown, device 100 is a disk drive 100 . For clarity, figure 1 Not drawn to scale. For simplicity, not all portions of disk drive 100 are shown. Furthermore, although disk drive 100 is depicted with particular components, other and / or different components may be used. For example, a circuit diagram for driving and controlling various parts of the magnetic disk drive 100 is not shown. Disk drive 100 may be a PMR disk drive, a HAMR disk drive, or another type of disk drive. For simplicity, only individual components 102, 110, 120, and 150 are shown. However, multiples of each component 102, 110, 120, and / or 150, and sub-components thereof, may be used.

[0059] Disk drive 100 includes slider 110 , transducer 120 and media 150 . Additional and / or different components may be included in disk drive 100 . For example, a laser may be included o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention relates to magnetic media having improved magnetic grain size distribution and intergranular segregation. Methods and systems provide magnetic recording media usable in magnetic storage devices. A magnetic recording medium includes a substrate, at least one intermediate layer, and a magnetic recording stack for storing magnetic data. The intermediate layer(s) include a primary phase having a first diffusion constant and a secondary phase having a second diffusion constant greater than the first diffusion constant. The magnetic recording stack rests on the intermediate layers such that at least one intermediate layer is between the substrate and the magnetic recording stack.

Description

technical field [0001] The present invention relates to magnetic media having improved magnetic grain size distribution and intergranular segregation. Background technique [0002] A conventional magnetic recording disk drive includes a slider attached to a suspension and a medium, such as a disk. A slider typically includes magnetic read transducers (readers) and magnetic write transducers (writers). Writers magnetically record data as binary bits along tracks in the media. The reader reads the data back from the media. [0003] The trend in magnetic recording is to achieve higher areal densities. For example, up to 1Tbit / in is expected 2 and higher density. To read, write and store data at this areal density, readers, writers and media have evolved. For example, tunneling magnetoresistive (TMR) sensors can be used to read higher density media with sufficiently high signal. Perpendicular magnetic recording (PMR) writers and heat-assisted magnetic recording (HAMR) wri...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/66G11B5/31G11B5/60
CPCG11B5/7369G11B5/737
Inventor K·斯里尼瓦桑T·李M·德赛
Owner WESTERN DIGITAL TECH INC