Magnetic Recording Array Domain Wall Element Failure Prevention
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Solution Overview
Problem
The existing magnetic recording arrays face failures during manufacturing due to the failure of domain wall moving elements, which are critical for data recording and processing, especially when the resistance area product (RA) is not adequately optimized.
Innovation Solution
The magnetic recording array design includes a plurality of domain wall moving elements connected through first and second switch elements, with a magnetic recording layer, a ferromagnetic layer, and a non-magnetic layer, where the OFF resistance of the first switching element is smaller than the second switching element and the non-magnetic layer, ensuring a resistance area product of 1×105 Ωμm2 or more, thereby preventing element failure during manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the resistance area product (RA) of domain wall moving elements is increased to reduce consumption power, then power consumption decreases, but the elements become more susceptible to manufacturing failures
Solution Approach 1:
The patent optimizes the resistance area product parameter to a specific range (1×10^5 to 1×10^6 Ωμm²) that balances power consumption reduction with manufacturing reliability, preventing both excessive power consumption and element failure during manufacturing
Solution Approach 2:
The patent implements a test period during the manufacturing process to detect and compensate for potential element failures before they affect normal operation, ensuring reliability while maintaining optimized RA values for low power consumption
2Quantity of substance
If multiple domain wall moving elements are integrated into a magnetic recording array, then recording capacity increases, but the complexity of controlling and managing the elements increases
Solution Approach 1:
The patent employs universal control circuits that can manage multiple domain wall moving elements through standardized control signals and configurations, allowing the system to scale in capacity without proportionally increasing control complexity
Solution Approach 2:
The patent divides the magnetic recording array into manageable units with individual domain wall moving elements that can be controlled independently or in groups, reducing the overall control complexity while maintaining high recording capacity
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 effectively prevents failures of domain wall moving elements during manufacturing by efficiently managing charge flow and reducing power consumption, ensuring reliable data recording and processing.
Implementation Method 1
each of the domain wall moving elements includes a magnetic recording layer which is electrically connected to the first wiring and the second wiring and includes a magnetic domain wall
Implementation Method 2
an OFF resistance of the first switching element is smaller than an OFF resistance of the second switching element
Implementation Method 3
a non-magnetic layer which is located between the first ferromagnetic layer and the magnetic recording layer
Data Source
AI summary
A magnetic recording array includes: a plurality of domain wall moving elements; a first wiring which is electrically connected to a reference potential and is electrically connected to at least one domain wall moving element of the plurality of domain wall moving elements; a second wiring which is electrically connected to at least two or more domain wall moving elements of the plurality of domain wall moving elements; a first switching element which is connected between each of the domain wall moving elements and the first wiring; and a second switching element which is connected between each of the domain wall moving elements and the second wiring, wherein an OFF resistance of the first switching element is smaller than an OFF resistance of the second switching element.