Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

CoCrPt-oxide magnetic recording target, film and preparation method thereof

An oxide and magnetic recording technology, applied in the field of information storage, to achieve the effect of small and uniform grain size, small and uniform grain size, and low element content

Inactive Publication Date: 2014-09-24
SINO PLATINUM METALS CO LTD
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the structure and properties of the CoCrPt-oxide magnetic recording film are also related to the structure and properties of the sputtering target, and there is no research on the combination of the target and the film in the current literature.

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
  • CoCrPt-oxide magnetic recording target, film and preparation method thereof
  • CoCrPt-oxide magnetic recording target, film and preparation method thereof
  • CoCrPt-oxide magnetic recording target, film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] The CoCrPt-oxide target is prepared by two-way vacuum hot pressing, and the specific preparation method includes the following steps:

[0036] (1) Powder pretreatment: the original powder is ball milled and graded, the particle size of Co, Cr, Pt raw material powder is less than 5 μm, and the particle size of oxide is less than 1 μm;

[0037] (2) Powder mixing: the finely classified powder is mixed evenly by mechanical mixing;

[0038] (3) Powder filling: the uniformly mixed powder is loaded into the graphite mold through the powder filling device;

[0039] (4) Powder sintering: Send the mold with high-purity powder into a vacuum hot-pressing sintering furnace for two-way vacuum hot-pressing sintering with a vacuum degree of 10 -2 ~10 -4 Pa, the sintering temperature is 1000-1500°C, the sintering pressure is 30-60MPa, and the holding time is 1-5h.

[0040] (5) Hot isostatic pressing: the ingot needs to be processed by hot isostatic pressing at a temperature of 800-11...

Embodiment 1

[0046] Co68Cr10Pt14-SiO of the present invention 2 The sputtering target is prepared by the following steps:

[0047] (1) Powder pretreatment: use Co, Cr, Pt and SiO above 3N5 2 As a raw material, the original powder is ball milled and classified, and the particle size of Co, Cr, and Pt raw material powders is less than 5 μm, and SiO 2 The particle size is less than 1 μm;

[0048] (2) Powder mixing: The powder after refinement and classification is based on the nominal composition Co68Cr10Pt14-SiO 2 For batching, use planetary ball mill mixing method to mix evenly;

[0049] (3) Powder filling: the uniformly mixed powder is loaded into the graphite mold through the powder loading device, and the surface of the graphite mold is sprayed with an oxide layer for treatment;

[0050] (4) Powder sintering: Send the mold with high-purity powder into a vacuum hot-pressing sintering furnace for two-way vacuum hot-pressing sintering with a vacuum degree of 10 -2 ~10 -4 Pa, the sinte...

Embodiment 2

[0055] The difference from Example 1 is that the CoCrPt-SiO 2 The alloy target is Co60Cr10Pt18-SiO 2 . The vacuum hot pressing temperature of the alloy ingot is 1200°C.

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

No PUM Login to View More

Abstract

The invention discloses a CoCrPt-oxide magnetic recording target, film and a preparation method thereof. The CoCrPt-oxide target includes one or several oxides selected from SiO2, TiO2, CrO, Cr2O3, Ta2O3, W2O3, Al2O3 and Y2O3, wherein the average grain size of the oxides is in the range of 3-20 mum. In the Alloy target, Co, Cr and Pt form an alpha-Co and epsilon Co two-phase Co based solid solution, which mainly comprises low temperature phase hexagonal epsilon-Co solid solution; the target has a thickness in the range of 2-6 mm, and magnetic susceptibility (PTF) value of 40%-60%. A magnetic recording layer of a magnetic recording medium prepared from the alloy target material is in preferred orientation growth of (002) crystal face, and in the X diffraction analysis, the X ray diffraction peak intensity ratio of the (002) crystal plane represented by the formula (1) is 70%-90%. The sputtering target provided by the invention has low content of harmful impurity elements, fine and uniform grain size, homogeneous chemical composition with small deviation from the nominal composition. The magnetic recording medium prepared from the above sputtering target material has uniform and fine grains, clear nonmagnetic grain boundaries, and excellent magnetic properties.

Description

technical field [0001] The invention relates to a CoCrPt-oxide magnetic recording target material, a thin film and a preparation method thereof, belonging to the field of information storage. Background technique [0002] With the rapid development of information and computer technology, the study of perpendicular magnetic recording media has attracted widespread attention. The perpendicular magnetic recording medium currently used is mainly composed of three layers with different functions, that is, the soft magnetic underlayer (soft magnetic underlayer, SUL) used to provide the return path of the read / write magnetic field, and reduce the interaction between the lower layer and the magnetic layer. An intermediate layer (non-magnetic intermediate layer, NMIL) that diffuses and regulates grain morphology in the magnetic layer, and a magnetic recording layer (magnetic recording layer, MRL) for recording information. Among them, the magnetic recording layer is the core part of...

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
IPC IPC(8): C23C14/34C23C14/08G11B5/667
Inventor 张俊敏谭志龙王传军闻明毕珺沈月宋修庆管伟明
Owner SINO PLATINUM METALS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com