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Related Concept Videos

Inductors01:11

Inductors

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An inductor is a passive component built to store energy within its magnetic field. It can be fabricated by coiling a wire around a magnetic core. When current is permitted to flow through this inductor, it is observed that the voltage across the inductor is directly proportional to the time rate of change of the current. Mathematically,
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Inductors01:20

Inductors

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An inductor, also known as a choke, is a circuit component created to have a specific inductance. Inductors are among the crucial circuit components used in modern electronics, along with resistors and capacitors. They serve as a barrier against changes in a circuit's current. An inductor tends to suppress current changes in an alternating-current circuit that are faster than desired. In a direct-current circuit, an inductor aids in preserving a constant current despite changes in the...
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Energy Stored in Inductors01:16

Energy Stored in Inductors

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An inductor is ingeniously crafted to accumulate energy within its magnetic field. This field is a direct result of the current that meanders through its coiled structure. When this current maintains a steady state, there is no detectable voltage across the inductor, prompting it to mimic the behavior of a short circuit when faced with direct current.
In terms of gauging the energy stored within an inductor, it is equivalent to the integral of the power delivered at every individual moment, all...
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Mutual Inductance01:24

Mutual Inductance

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Inductance is the property of a device that tells us how effectively it induces an emf in another device. In other words, it is a physical quantity that expresses the effectiveness of a given device.
When two circuits carrying time-varying currents are close to one another, the magnetic flux through each circuit varies because of the changing current in the other circuit. Consequently, an emf is induced in each circuit by the changing current in the other. Therefore, this type of emf is called...
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Inductor in an AC Circuit01:16

Inductor in an AC Circuit

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The basic components of an inductor are coils or loops of wire that are either wound around a hollow tube former or a ferromagnetic material (iron-cored) to increase their inductive value or inductance. When a voltage is applied across an inductor's terminals, a magnetic field is created, where the inductor stores its energy. The inductor's own self-induced or back emf value controls the growth of the current flowing through it.  This back emf voltage is proportional to the rate of...
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Self-Inductance01:24

Self-Inductance

2.4K
Mutual inductance arises when a current in one circuit produces a changing magnetic field that induces an emf in another circuit. On the other hand, self-inductance arises when the current passing through the circuit changes, creating a changing magnetic flux, resulting in inductance in the same circuit.
Consider a circuit connected to an AC source. As the current varies with time, the magnetic flux through the circuit correspondingly changes. Faraday's law tells us that an emf would...
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Related Experiment Video

Updated: Apr 23, 2026

A Method for Growing Bio-memristors from Slime Mold
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Realization of the meminductor.

Jiahao Han1, Cheng Song, Shuang Gao

  • 1Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China.

ACS Nano
|October 2, 2014
PubMed
Summary

Researchers demonstrate the first experimental realization of a meminductor, a novel memory device, using thin films at room temperature. This breakthrough enables nonvolatile magnetic energy storage and could advance low-power electronics and artificial intelligence.

Keywords:
electric currentmagnetic fluxmeminductorpinched hysteretic curvethe spin Hall magnetoresistance effect

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology
  • Electrical Engineering

Background:

  • The meminductor, a proposed fundamental circuit memdevice, has lacked clear material models and experimental realization.
  • Existing memdevices, like memristors, show promise but a complete set of fundamental memdevices is needed.
  • Understanding and realizing meminductors is crucial for advancing memory technologies and electronic circuits.

Purpose of the Study:

  • To experimentally demonstrate the meminductor's functionality at room temperature.
  • To establish a material basis for meminductor devices using the spin Hall magnetoresistance effect.
  • To introduce a metric, meminductance (LM), for characterizing meminductor performance.

Main Methods:

  • Fabrication of several-nanometer-thick thin films.
  • Utilizing the spin Hall magnetoresistance effect to induce magnetic flux-current signals.
  • Characterization of pinched hysteretic magnetic flux-current signals at room temperature.
  • Analysis of nonvolatile memorizing properties and magnetic energy storage capabilities.

Main Results:

  • Demonstrated pinched hysteretic magnetic flux-current signals at room temperature.
  • Exhibited nonvolatile memorizing properties characteristic of a meminductor.
  • Showcased magnetic energy storage ability, confirming meminductor functionality.
  • Introduced meminductance (LM) as a parameter to quantify meminductor capability.

Conclusions:

  • The study presents the first experimental realization of a meminductor.
  • This work establishes a pathway for nanoscale meminductor design and manufacture.
  • The findings contribute a fundamental memdevice, potentially enabling low-power electronics, advanced information storage, and artificial intelligence applications.