Spin Transducer Layout for Coil-Free Voltage Transformation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

There is a trade-off relationship between the size of the coil and the amount of inductance, making it difficult to achieve a large inductance with a small coil, which limits the miniaturization of transformers that use coils.

Innovation Solution

A spin transducer is proposed, comprising a first and second spin orbit torque wiring layer, and a first spin wave propagation layer between them. A current or voltage is applied between the ends of the first spin orbit torque wiring layer, and an output is generated between different ends of the second spin orbit torque wiring layer, allowing for miniaturization and intensity transformation of current or voltage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a coil-based transformer is used to achieve large inductance, then the inductance amount is improved, but the device size increases

Engineering Contradiction:

ImproveinductanceVSAvoidcoil size

Core Design Contradiction:

Quantity of substanceVSVolume of moving object

Solution Approach 1:

The patent replaces the traditional mechanical coil structure with a spin-based electronic system. Instead of using physical coils to generate inductance through electromagnetic fields, the invention uses spin-orbit torque wiring layers and spin wave propagation layers to achieve inductance through quantum mechanical spin effects, thereby eliminating the need for large physical coils

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameter for achieving inductance from physical dimensions (coil size, number of turns) to material properties (spin-orbit coupling strength, magnetic anisotropy). By adjusting material composition and spin wave characteristics rather than physical size, the system achieves high inductance in a miniaturized form factor

Inventive Principle:

Principle #35Parameter changes

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 spin transducer effectively miniaturizes while enabling the transformation of current or voltage intensity, overcoming the limitations of traditional coil-based transformers.

Implementation Method 1

spin orbit torque wiring layer

Methodology Applied

Scientific EffectSpin Hall Effect: Hall Effect

Implementation Method 2

spin wave propagation layer

Methodology Applied

Scientific EffectSpin Wave Propagation: Magnetic Field

Data Source

PatentUS20250046502A1Spin transducer

Publication Date: 2025.02.06 TDK CORP

AI summary

A spin transducer includes a first spin orbit torque wiring layer, a second spin orbit torque wiring layer, and a first spin wave propagation layer. The first spin wave propagation layer is between the first spin orbit torque wiring layer and the second spin orbit torque wiring layer. A current or voltage is applied between a first end and a second end of the first spin orbit torque wiring layer in a first direction, and a current or voltage between a third end and a fourth end of the second spin orbit torque wiring layer is output. The third end and the fourth end are at different positions on the second spin orbit torque wiring layer in a second direction perpendicular to the first direction.