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If we have to strain a ferromagnetic crystal along certain direction, we would change the inter atomic spacing not only along this direction but also in other direction. And hence the exchange interactions between the atomic spins are also changed. This would lead to a change in the magnetization property of crystal. When an iron crystal is placed in a magnetic field along an easy direction, it gets longer along this direction but contracts in the transverse directions. The longitudinal strain $l/l along the direction of magnetization is called magnetostriction constant denoted by λ. When the crystal reaches saturation magnetization, λ also reaches saturation called saturation strain. The crystal lattice strain energy associated with magnetostriction is called magnetostrictive energy. Magnetostriction is responsible for transformer hum noise.
illustrate the parts and function of motor
Easy definition with explanation of FREQUENCY, WAVELENGTH, AMPLITUDE, DAMPED OSCILLATIONS.
Describe binding energy. How does binding energy per nucleon vary with mass number? What is it significance.
Explain about the principle of acousting grating. Acousting Grating Principle: While ultrasonic waves are passed by a liquid, the density of the liquid varies layer by layer
A rigid object is a body with a exact and unchanged size and shape i.e. a body is said to be rigid if the distance among any two particles of the body remains invariant.
He chemical effects of electricity
estimation of nuclear fusion on basis of liquid drop model
Sketch a graph showing the relationship among the magnetic field around a straight, current-carrying wire, and the distance from the wire. This is a graph of y = 1/x.
Figure denotes a rod whose ends are in thermal contact with a hot reservoir at temperature T1 and a cold reservoir at temperature T2. The ends of the rod are covered with insulati
The number of unpaired electrons in the Fe2 + ion is: (1) 0 (2) 4 (3) 6 (4)3 Ans: 4
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