Magnetic Memory Devices With Insulating Patterns For Isolation
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Solution Overview
Problem
Magnetic memory devices face challenges in achieving high integration and low power consumption while maintaining effective electrical and magnetic isolation between magnetic patterns, which is crucial for next-generation semiconductor devices.
Innovation Solution
The magnetic memory device incorporates a tunnel barrier layer and insulating patterns with specific magnetic and metal elements, including oxygen and impurities like helium, phosphorus, arsenic, and carbon, to achieve electrical and magnetic isolation between magnetic patterns without the need for physical etching, thereby enhancing integration and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical etching is used to isolate magnetic patterns, then electrical and magnetic isolation is achieved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent introduces an insulating pattern as an intermediary material layer between adjacent magnetic patterns. This insulating pattern, composed of a magnetic element combined with oxygen and/or impurities, serves as a mediator that provides both electrical and magnetic isolation without requiring physical etching of the magnetic patterns themselves, thereby simplifying the manufacturing process while maintaining isolation effectiveness.
Solution Approach 2:
The patent changes the chemical and physical parameters of the magnetic element by combining it with oxygen and/or impurities to transform it from a conductive magnetic material into an insulating pattern. This parameter change (from conductive to insulating state) enables the same material to serve dual purposes: maintaining magnetic pattern structure while providing electrical and magnetic isolation between adjacent patterns.
2Productivity
If high integration is pursued, then device density increases, but electrical short-circuits between adjacent patterns become more likely
Solution Approach 1:
The insulating pattern acts as an intermediary barrier between closely spaced magnetic patterns, providing electrical isolation that prevents short-circuits while allowing high integration density. The mediator structure enables adjacent patterns to be placed closer together without compromising electrical reliability.
3Use of energy by moving object
If magnetic memory devices are designed for low power consumption, then operating voltage is reduced, but signal detection becomes more difficult
Solution Approach 1:
The insulating pattern uses a magnetic element that can be readily transformed into an insulating state through oxygen/impurity combination, providing effective isolation that maintains signal integrity even at reduced operating voltages. The disposable nature of the insulating pattern (formed through simple combination rather than complex etching) enables reliable low-power operation without compromising detection capability.
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 approach allows for the formation of isolated magnetic patterns and electrodes without physical etching, improving the reliability and efficiency of magnetic memory devices by suppressing electrical short-circuits and enabling superior integration and low power operation.
Implementation Method 1
a tunnel barrier layer covering the plurality of first magnetic patterns and the first insulating pattern
Implementation Method 2
the first insulating pattern may further include oxygen
Implementation Method 3
The impurities may be at least one of helium (He), phosphorus (P), arsenic (As), boron (B), and carbon (C)
Implementation Method 4
Resistance of the MTJ pattern may vary depending on magnetization directions of the two magnetic substances
Data Source
AI summary
Magnetic memory devices include a plurality of first magnetic patterns on a substrate so as to be spaced apart from each other, a first insulating pattern between the first magnetic patterns to define the first magnetic patterns, and a tunnel barrier layer covering the first magnetic patterns and the first insulating pattern. The first insulating pattern includes a first magnetic element, and the first magnetic element is the same as a second magnetic element constituting the first magnetic patterns.