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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.
The heat-rejection system for a condenser of a steam power plant is to be designed for minimum first plus pumping cost. The heat-rejection rate from the condenser is 14MW. The foll
if electrons are moving from east to west in a conductor is there a flow of current?
Q. What are the uses of an electron microscope? Uses of electron microscope: (i) It is utilized in the industry to study the surface of metals, structure of textile fib
A basketball player spins a basketball with a radius of 15 cm on his finger. The mass of the ball is 0.75 kg. What is the moment of inertia about the basketball?
Electrostatics – Two kinds of Charges Introduction: If a glass rod is rubbed with silk cloth it acquires a positive charge, while silk cloth acquires an equal amo
An alternating voltage given by v=100sin240t volts is applied across a coil of resistance 32 and inductance 100mH. Verify (a) the circuit impedance, (b) the current flowing,
An object contains n1 protons and n2 electrons.what is net charge on the object?
Why we are showing work done over a closed path is zero to prove that electrostatic forces are conservative
The discharge over a triangular notch can be written as Q = (8/15) Cd (2g)0.5 tan(θ/2) H5/2 If an error of 1% in measuring H is introduced determine the corresponding error
why dark spot appears on newton''s ring?
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