Magnetic Head Mn3Sn Composite Material Recording Density
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Solution Overview
Problem
Current magnetic recording technologies face challenges in enhancing recording density due to limitations in the design of magnetic heads and recording devices, particularly in efficiently applying and managing magnetic fields for effective data storage.
Innovation Solution
The magnetic head incorporates a magnetic element with a first magnetic layer and a magnetic member featuring specific magnetic materials, including Mn3Sn, Mn3Ge, Mn3Ga, and antiferromagnetic materials, which are strategically positioned between magnetic poles to optimize magnetic field application and heat dissipation, enabling improved recording density and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional magnetic head design is used, then device simplicity is maintained, but recording density cannot be improved
Solution Approach 1:
The magnetic head is divided into multiple functional components: first and second magnetic poles for generating magnetic fields, a magnetic element with first and second magnetic layers for data recording, and a magnetic member with specific magnetic materials for field management. This segmentation allows each component to be optimized for its specific function, enabling improved recording density through precise control of magnetic field distribution while maintaining manageable structural complexity through modular design
Solution Approach 2:
The magnetic member incorporates composite magnetic materials including Mn3Sn, Mn3Ge, Mn3Ga, and antiferromagnetic materials with specific magnetization directions. These composite material structures enable sophisticated magnetic field control capabilities that improve recording density by managing magnetic flux distribution and reducing interference, while the materials are integrated into existing head structures to limit the increase in device complexity
2Manufacturing precision
If magnetic field application is intensified to improve recording density, then data storage capacity increases, but heat generation increases
Solution Approach 1:
The magnetic member acts as an intermediary component between the magnetic poles and the magnetic element. It includes magnetic materials that can control and distribute magnetic flux, thereby intensifying the magnetic field application where needed to improve recording density while managing heat generation through controlled magnetic flux paths that reduce energy loss and thermal buildup in critical areas
Solution Approach 2:
The patent utilizes magnetic materials with specific properties (Mn3Sn, Mn3Ge, Mn3Ga, and antiferromagnetic materials) that can change their magnetic characteristics under different conditions. By selecting materials with appropriate Curie temperatures and magnetic anisotropy, the system can intensify magnetic field application for high-density recording while the materials' inherent thermal properties help manage heat generation through controlled magnetic flux distribution
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances recording density by effectively applying magnetic fields and managing heat, leading to more efficient data storage operations and improved magnetic recording capabilities.
Implementation Method 1
a magnetic element provided between the first magnetic pole and the second magnetic pole
Implementation Method 2
a magnetic member including a first magnetic part... enabling improved recording density and stability
Data Source
AI summary
According to one embodiment, a magnetic head includes a first magnetic pole, a second magnetic pole, a magnetic element, and a magnetic member. The magnetic element is provided between the first and second magnetic poles, and includes a first magnetic layer. The magnetic member includes a first magnetic part. A second direction from the first magnetic part to the magnetic element crosses a first direction from the first to second magnetic pole. The first magnetic part includes a magnetic material including at least one of first to third materials. The first material includes at least one selected from the group consisting of Mn3Sn, Mn3Ge and Mn3Ga. The second material includes at least one selected from the group consisting of a cubic or tetragonal compound including Mn and Ni, a cubic alloy including γ-phase Mn, and a cubic alloy including Fe. The third material includes an antiferromagnet.