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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...
3.9K
Magnetic Fields01:27

Magnetic Fields

7.0K
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...
7.0K
Magnetic Force Between Two Parallel Currents01:13

Magnetic Force Between Two Parallel Currents

4.4K
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

6.1K
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.
6.1K
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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Video Experimental Relacionado

Updated: Dec 26, 2025

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
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Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

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Logía de pared de dominio magnético impulsada por corriente

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
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron puertas lógicas totalmente eléctricas utilizando paredes de dominio magnético, lo que permite una computación escalable más allá de la electrónica tradicional. Este avance utiliza el acoplamiento quiral para la manipulación eficiente de datos y allana el camino para aplicaciones avanzadas de memoria en lógica.

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Área de la Ciencia:

  • La tecnología Spintronics
  • Ciencias de los materiales
  • Ingeniería informática

Sus antecedentes:

  • La lógica basada en el espín ofrece ventajas como la retención de datos no volátiles y baja fuga.
  • Las arquitecturas de pared de dominio magnético prometen alta densidad y procesamiento de información flexible.
  • Los esquemas de pared de dominio existentes requieren campos magnéticos externos, lo que limita la escalabilidad.

Objetivo del estudio:

  • Para demostrar operaciones lógicas totalmente eléctricas y en cascada utilizando pistas de carreras de pared de dominio.
  • Para superar las limitaciones del control del campo magnético externo en la lógica espintrónica.
  • Desarrollar una plataforma escalable para circuitos lógicos magnéticos.

Principales métodos:

  • Se explotó la interacción interfacial Dzyaloshinskii-Moriya para el acoplamiento quiral.
  • Utilizó el movimiento de pared de dominio inducido por corriente para operaciones lógicas.
  • Inversores de pared de dominio fabricados, NAND, NOR, XOR y puertas de agregado completas.

Principales resultados:

  • Se han realizado con éxito operaciones lógicas totalmente eléctricas utilizando movimiento de pared de dominio.
  • Puertas lógicas NAND y NOR reconfigurables demostradas.
  • Puertas NAND en cascada para construir circuitos XOR y adder completos, que muestran el control eléctrico.

Conclusiones:

  • Desarrolló una plataforma viable para la lógica magnética totalmente eléctrica escalable.
  • Mostró el potencial de las pistas de carreras de pared de dominio para funciones lógicas complejas.
  • Abrió el camino para futuras aplicaciones de memoria en lógica.