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Susceptibility of Paramagnetic Solids by Gouys Method
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Susceptibility of Paramagnetic Solids by Gouys Method

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Department Physics Research & Laser





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We offer Apparatus for Measurement of Susceptibility of Paramagnetic Solids by Gouy’s Method in this, the solid sample in the form of a long cylinder (area of cross section A) is hung from the pan of a balance and is placed such that one end of the sample is between the pole-pieces of the magnet (field H ) and the other one is outside the field. The force exerted on the sample by the inhomogeneous magnetic field is obtained by measuring the apparent change (Δm ) in the mass of the sample. The susceptibility χ is given by χ = 2Δmg/AH2
If the sample is in the form of powder, it is filled in a long nonmagnetic tube which is then suspended from the pan of the balance.
The set up consists of the following:
(a) Scientific Balance, Capacity: 200 gms Sensitivity: 1/10 mg.
(b) Sample in the form of a long rod: Set of 4 samples, 2 each of Ebonite and Wood
(c) Electromagnet, Pieces: 75mm tappered to 25mm Mag. Field: 20KG at 6mm airgap Energising Coils: Two of approx. 13Ω each Power: 0-90Vdc, 3A, for coils in series 0-45Vdc, 6A, for coils in parallel
(d) Constant Current Power Supply, Current: 0-3A per coil Smoothly adjustable Line Regulation: 0.1% for 10% mains variation Load Regulation: 0.1% for load variation from 0 to max.Display: 3 digit, 7 segment LED display Protection: Protected against overload, short circuit and transients caused by the load inductance. Power: 220V 10%, 50Hz or 110V 10%, 60Hz as required.
(e) Gaussmeter,
The experiment is complete in all respect


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