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Related Concept Videos

Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

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...
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Toroids01:27

Toroids

A toroid is a closely wound donut-shaped coil constructed using a single conducting wire. In general, it is assumed that a toriod consists of multiple circular loops perpendicular to its axis.
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Magnetic Field of a Solenoid01:18

Magnetic Field of a Solenoid

A solenoid is a conducting wire coated with an insulating material, wound tightly in the form of a helical coil. The magnetic field due to a solenoid is the vector sum of the magnetic fields due to its individual turns. Therefore, for an ideal solenoid, the magnetic field within the solenoid is directly proportional to the number of turns per unit length and the current. Conversely, the magnetic field outside the solenoid is zero.
Consider a solenoid with 100 turns wrapped around a cylinder of...
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.
Three-Winding Transformers01:19

Three-Winding Transformers

Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
In the per-unit equivalent circuit of a grounded Y-Y three-phase...

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Step-by-step design guide of a cryogenic three-axis vector magnet.

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Researchers developed a guide for building a low-temperature, three-axis vector magnet. This system is crucial for applications in spintronics and condensed matter physics, offering a practical alternative to complex commercial options.

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Area of Science:

  • Low-temperature physics
  • Experimental techniques
  • Magnet design

Background:

  • Tunable magnetic fields are vital for spintronics, MRI, and condensed matter physics.
  • Commercial superconducting vector magnets are costly and inflexible for specific research needs.
  • Existing in-house designs lack comprehensive construction guidance.

Purpose of the Study:

  • To provide a detailed manual for constructing a cryogenically compatible three-axis vector magnet.
  • To offer a practical, in-house solution for generating tunable magnetic fields at low temperatures.
  • To enable specific experimental requirements in research settings.

Main Methods:

  • Detailed design and construction manual for a three-axis vector magnet.
  • System integration and testing within a dilution refrigerator (15 mK to 4 K).
  • Implementation of safety measures to prevent quenching-induced heating.

Main Results:

  • Successful operation of the vector magnet at cryogenic temperatures without significant base temperature increase.
  • Generation of magnetic fields up to 2.5 T in the bore and 0.4 T at the sample position using DC currents up to 3 A.
  • Experimental validation of magnetic field performance through Hall sensor measurements, showing good agreement with design predictions.

Conclusions:

  • The developed manual facilitates the in-house construction of a functional, cryogenically compatible three-axis vector magnet.
  • The system provides a cost-effective and adaptable solution for generating tunable magnetic fields in low-temperature research.
  • This work addresses the need for accessible, detailed guides in experimental physics for specialized equipment.