Quadrangular Magnetic Stacked Body Dimensional Ratio Optimization
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Solution Overview
Problem
Current magnetic memory devices face challenges in maintaining stability and interoperability of magnetization states, particularly in magnetization reversal processes, due to variations in geometric shapes and dimensions of magnetic layers, which affect write and read error rates.
Innovation Solution
A magnetic device with a stacked body comprising two magnetic layers and a non-magnetic layer, configured in a quadrangular planar shape with specific dimensional ratios, enhances magnetization stability and interoperability by optimizing the magnetization reversal threshold and error rates through controlled current densities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the geometric shape and dimensions of magnetic layers are varied, then device characteristics can be optimized, but stability and interoperability of magnetization states deteriorate
Solution Approach 1:
The patent applies parameter changes by precisely controlling the dimensional ratio (first side dimension to thickness ratio) of the quadrangular stacked body within a specific range. This parameter optimization allows the device to achieve improved device characteristics while maintaining stable magnetization states, resolving the contradiction between optimization and stability.
Solution Approach 2:
The patent uses composite material structures with multiple magnetic layers and non-magnetic layers stacked together. This composite structure enables both optimization of device characteristics through geometric control and maintenance of magnetization stability through the combined properties of different materials.
2Ease of manufacture
If conventional magnetic memory devices are used, then manufacturing is simpler, but write and read error rates increase
Solution Approach 1:
The patent changes the geometric parameters of the magnetic device by adopting a quadrangular planar shape with a specific first side dimension to thickness ratio. This parameter modification reduces write and read error rates while maintaining manufacturing feasibility through standard fabrication processes.
3Stability of the object's composition
If the stacked body uses a quadrangular planar shape with specific dimensional ratios, then magnetization stability improves, but device complexity increases
Solution Approach 1:
The patent manages device complexity by defining a specific parameter range (first side dimension to thickness ratio) rather than fixing exact dimensions. This approach maintains magnetization stability while allowing flexibility in actual device fabrication, preventing excessive complexity.
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
The quadrangular planar shape with specific dimensional ratios improves the reliability of magnetization switching and read operations by maintaining nearly the same magnetization reversal response as circular shapes, while reducing write and read error rates, thus enhancing the overall performance of magnetic memory devices.
Implementation Method 1
Magnetic device and memory device
Data Source
AI summary
According to one embodiment, a magnetic device includes a stacked body including a first magnetic layer, a second magnetic layer, and a non-magnetic layer between the first magnetic layer and the second magnetic layer. The stacked body has a quadrangular planar shape, the stacked body has a first side dimension in a first direction parallel to a surface of a substrate and a thickness in a second direction perpendicular to the surface of the substrate, and a ratio of the first side dimension to the thickness is in a range of 0.10 to 4.0.