Magnetic Memory Domain Wall Control via Variable Conductive Line Width
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current magnetic memory devices face challenges in controlling the movement speeds of domain walls and domain widths in magnetic track lines, which affects their performance and data storage density.
Innovation Solution
A magnetic memory device design featuring a conductive line with varying widths and regions, where the magnetic track line includes domains with different sizes and densities, allowing for controlled movement speeds of domain walls and adjusted domain widths by adjusting current densities across the conductive line's regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the conductive line has a uniform width, then the manufacturing process is simple, but the domain wall movement speed cannot be controlled and data storage density is limited
Solution Approach 1:
The conductive line is divided into multiple regions with different widths (first region with width W1, second region with width W2, third region with width W3), where each region controls the domain wall movement speed independently. This segmentation allows different data storage densities in different segments while maintaining overall system functionality.
Solution Approach 2:
Different regions of the conductive line are designed with different width characteristics to create local variations in current density. The first region has smaller width for faster domain wall movement, the second region has larger width for slower movement and higher storage density, and the third region transitions between these states.
2Measurement precision
If the magnetic track line has uniform domain sizes, then the structure is simple to manufacture, but the signal sensitivity and data storage density are reduced
Solution Approach 1:
The magnetic track line is designed with different domain sizes in different regions corresponding to the conductive line width variations. Regions with narrower conductive lines have larger domains for better signal sensitivity, while regions with wider conductive lines have smaller domains for higher storage density.
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 design enhances signal sensitivity and increases data storage density by controlling domain wall movement speeds and sizes, improving the overall performance of magnetic memory devices.
Implementation Method 1
Some magnetic memory devices are being considered as possible next-generation memory devices because of their high-speed operation characteristics and/or non-volatile characteristics. For example, a new magnetic memory device using a movement phenomenon of a magnetic domain wall of a magnetic material is under current study and development.
Implementation Method 2
a new magnetic memory device using a movement phenomenon of a magnetic domain wall of a magnetic material is under current study and development
Data Source
AI summary
A magnetic memory device includes a conductive line that extends in a first direction, and a magnetic track line that extends in the first direction on a top surface of the conductive line. The conductive line may include a first region having a first width in a second direction, and a second region having a second width in the second direction. The first direction and the second direction are parallel to the top surface of the conductive line and are perpendicular to each other. The second width may be greater than the first width. The magnetic track line includes first domains arranged in the first direction on the first region of the conductive line, and second domains arranged in the first direction on the second region of the conductive line. A size of each of the second domains may be less than a size of each of the first domains.