Magnetic Device Thermal Isolation via Insulator Spaces
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Solution Overview
Problem
Magnetoresistance effect elements generate heat during data writing, which can adversely affect control elements and other magnetoresistance effect elements, leading to instability and reduced data retention.
Innovation Solution
A magnetic device is designed with a stacked body comprising ferromagnetic layers and a non-magnetic layer, where an insulator with spaces outside and surrounding the stacked body reduces heat transfer by providing poor thermal conductivity, effectively isolating the heat-generating element from others.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetoresistance effect element is used for data writing, then data storage function is achieved, but heat is generated that adversely affects control elements and other magnetoresistance effect elements
Solution Approach 1:
An insulator layer is introduced as an intermediary component between the magnetoresistance effect element (heat source) and surrounding elements (control elements and other magnetoresistance effect elements). This insulator acts as a thermal barrier that mediates heat transfer, allowing the system to maintain data storage functionality while protecting sensitive components from thermal damage.
Solution Approach 2:
The device structure is segmented into distinct functional regions: the magnetoresistance effect element region for data writing, the insulator region for thermal isolation, and the control element region. This spatial segmentation through the insulator layer prevents heat from the active writing element from affecting other functional elements, enabling reliable operation of each component.
2Productivity
If magnetoresistance effect element generates heat for data writing, then writing function is performed, but adverse effects occur on control elements and other magnetoresistance effect elements
Solution Approach 1:
The heat generated by the magnetoresistance effect element during data writing, which is initially a harmful byproduct, is managed through the insulator layer that converts this thermal energy into a contained phenomenon. The insulator traps and directs heat away from sensitive elements, transforming the harmful heat generation into a controlled thermal management solution that preserves writing capability while eliminating adverse effects.
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 magnetic device effectively suppresses heat transfer from the magnetoresistance effect element, enhancing data retention and stability by using insulating spaces to minimize thermal conduction, thereby improving the reliability of data writing and storage.
Implementation Method 1
an insulator which covers at least a part of side surface of the stacked body... the insulator may have a space outside the side surface of the stacked body... effectively suppresses heat transfer from the magnetoresistance effect element
Data Source
AI summary
A magnetic device is equipped with a stacked body including a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; and an insulator which covers at least a part of side surfaces of the stacked body, in which the insulator has a space outside the side surface of the stacked body.