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HO-ED-INT-06M Magnetostriction with Michelson InterferometerMagnetostriction with Michelson Interferometer Holmarc's Model No: HO ED INT 06M, Magnetostriction with Michelson Interferometer uses two mirrors in a Michelson arrangement to obtain the interference pattern. Due to the magnetostrictive effect, one of the mirrors is shifted by variation in the magnetic field applied to the sample, and the shift in interference pattern is observed. Ferromagnetic substances undergo so called magnetic distortions, i. e,
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Magnetostriction with
Michelson Interferometer

Holmarc's Model No:HO-ED-INT-06M, Magnetostriction with Michelson Interferometer uses two mirrors in a Michelson arrangement to obtain the interference pattern. Due to the magnetostrictive effect, one of the mirrors is shifted by variation in the magnetic field applied to the sample, and the shift in interference pattern is observed.

Ferromagnetic substances undergo so-called magnetic distortions, i.e, they exhibit lengthening or shortening parallel to the direction of magnetization. Such changes are termed positive or negative magnetostriction. In crystal anisotropy , magnetostriction is also ascribable to the spin-orbit mutual potential energy, as this is a function of direction of magnetization and the interatomic distances. Due to magnetostriction, which corresponds to a spontaneous distortion of the lattice, a Ferro magnet can reduce its total anisotropic and elastic energy.

Experiment

To study magnetostrictive properties of various materials (iron, nickel and copper)

Magnetostriction is a property of ferromagnetic materials that causes them to change their shape or dimensions during the process of magnetization.

The alteration in length Δl is obtained from the number of circular fringe changes; in the process the separation per circular fringe change alters by λ/2.


Δl  =  n. λ / 2

λ is the wavelength of laser used.

Specifications:

    Electromagnet
    Length of the coil     150 mm
    Winding material     Copper
    No. of turns     2508 nos.

Features:

  Longitudinal magnetostriction is considered
    Diode laser is used as light source
    All materials used in this setup are of laboratory grade and are corrosion resistant


Video - Please Click HERE

Related Topics:

 Magnetostriction - positive and negative magnetostriction
    Ferro magnetism
    Interference of light

 

Fig:- Magnetostriction of different ferromagnetic materials with their relative change in length Δl plotted against applied magnetic field strength Hm

Scope of Delivery:

Optical Breadboard with Support
Kinematic Laser Mount
Beamsplitter Mount
Mirror Mount with Translation
Electromagnet Coil with Mount
Specimen Rods (Iron, Nickel, Copper)
Screen with Mount
Beamsplitter
Mirror with Cell
Electromagnet Power supply
Diode Laser with Power supply (Red)
Accessories

Thumb Screws
Allen keys
Dust Protective Cover
Instruction Manual

 

HO-ED-INT-06M Magnetostriction with Michelson Interferometer

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