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関連する概念動画

Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

3.9K
Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
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Magnetic Fields01:27

Magnetic Fields

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A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
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Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

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Two long, straight, and parallel current-carrying conductors exert a force of equal magnitude on one another. The direction of the force depends on the current direction in the conductors.
The force exerted by the magnetic field due to the first conductor over a finite length of the second conductor is given as the product of the current in the second conductor and  the vector product of the length vector along the current element and the field due to the first conductor. According to the...
4.4K
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

5.6K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
5.6K
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

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Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
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Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

2.0K
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
2.0K

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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
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電流駆動磁気領域壁の論理

Zhaochu Luo1,2, Aleš Hrabec3,4,5, Trong Phuong Dao3,4,5

  • 1Laboratory for Mesoscopic Systems, Department of Materials, ETH Zurich, Zurich, Switzerland. zhaochu.luo@psi.ch.

Nature
|March 13, 2020
PubMed
まとめ
この要約は機械生成です。

研究者は磁気領域の壁を使って 完全に電気的な論理ゲートを開発し 伝統的な電子機器を超えたスケーラブルなコンピューティングを可能にしました この突破は,効率的なデータ操作のためのキラルカップリングを活用し,高度なメモリインロジックアプリケーションの道を開きます.

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関連する実験動画

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科学分野:

  • スピントロニクス
  • 材料科学
  • コンピュータ工学

背景:

  • スピンベースのロジックは,非揮発性データ保持と低漏れなどの利点を提供します.
  • マグネティック・ドメイン・ウォール・アーキテクチャは 高密度と柔軟な情報処理を約束します
  • 既存のドメイン・ウォール・スキームは,外部磁場を必要とし,スケーラビリティを制限します.

研究 の 目的:

  • 完全に電気的な論理操作と,ドメイン・ウォール・レーサーを用いたカスケーディングを実証する.
  • 外部磁場制御の限界を克服する スピントロニックの論理
  • 磁気論理回路のためのスケーラブルなプラットフォームを開発する.

主な方法:

  • クイラルカップリングのためのインターフェイスDzyaloshinskii-Moriyaの相互作用を利用した.
  • 論理操作のために電流誘発ドメインの壁の動きを利用した.
  • 製造されたドメイン・ウォール・インバーター,NAND,NOR,XOR,および完全なアドダー・ゲート.

主要な成果:

  • ドメイン・ウォール・モーションを使って 完全に電気的な論理操作を成功裏に実行した.
  • 再構成可能なNANDとNORの論理ゲートを実証した.
  • カスケードされたNANDゲートで,XORと完全なアドダー回路を構築し,電気制御を示します.

結論:

  • 拡張可能な全電気磁気ロジックの実行可能なプラットフォームを開発しました.
  • 複雑な論理関数のためのドメインウォールレーサーの潜在能力を示した.
  • 未来におけるメモリ・イン・ロジックの応用に 道を切り開きました