Concept explainers
The average magnetic moment for cobalt.
Answer to Problem 65AAP
The average magnetic moment for cobalt is
Explanation of Solution
Write the expression to calculate average magnetic moment for cobalt
Here, saturation magnetization is
Write the expression to calculate atomic density of the cobalt.
Here, number of atoms per unit cell is
Write the expression to calculate volume of the unit cell for the cobalt
Here, lattice constant of the unit cell is
Conclusion:
Refer "Problem 16.64" in the textbook, obtain the values for lattice constant
Substitute
Substitute
The value of Bohr magneton
Substitute
Thus, the average magnetic moment for cobalt is
Want to see more full solutions like this?
Chapter 16 Solutions
Foundations of Materials Science and Engineering
- The atoms of a material used as an insulator generally contain ___________ valence electrons.arrow_forwardDC and AC subject: Find the relative permeability of the typical ferromagnetic material whose magnetization curve is shown. H = 50, 100, 500 and 1000 A-turns/m.arrow_forwardIf 5.8x1020 electrons are deposited on the positive plate of a capacitor by applied voltage of 40V, find the capacitance of the capacitor? (Analysis)arrow_forward
- The type of charge possessed by an electron is: 1. negative 2. positive 3. molecular 4. gravitational.arrow_forwardA piezoelectric material has a Young’s modulus of 72000 MPa. What stress is required to change its polarization from 640 C/m2 to 645 C/m2?arrow_forwardA wire carrying 0.50 A of current is place in a magnetic field with a strength of 0.75 T. The length of the wire is 41 cm. What is the magnitude of the magnetic force on the wire?arrow_forward
- In Niels Bohr's 1913 model of the atom, the electron is in a circular orbit around a nucleus. An electron is 5.70 x 10-11 m from a nucleus traveling in a circular orbit with a speed of 2.15 x 106 m/s. What is the magnitude of the magnetic moment due to the electron's motion?arrow_forwardYour answer is partially correct. The ammonia molecule NH3 has a permanent electric dipole moment equal to 1.47 D, where 1 D-1 debye unit-3.34 x 10-30 C-m. Calculate the electric potential in volts due to an ammonia molecule at a point 46.7 nm away along the axis of the dipole. (Set V-0 at infinity.) Number 2.26E-5 Units Varrow_forward2. An electron is moving with a speed of 5 x 107m/s at right angle to a magnetic field of 5000 G. What is the magnetic force on the electron?arrow_forward
- How can you extract information on saturation magnetization, remanence and coercitivity from a hysteresis graph?arrow_forward10 cm 1.25 100 0.05 em 30 om 6.75 0.30 625 10 cm 00 1000 Magastaing inoway (A Ts 10 cm 30 cm- A two-legged magnetic core with an air gap is shown in Fig.1. The depth of is 5 cm, the length of the airgap is 0.08 cm, and the number of turns on the coil is 800. The magnetization curve of the core material is shown in Fig.2. The magnetic field density in air gap is 0.7 T. What is the total MMFin A-Turns required to magnetize both the iron core and airgap? Nas deasiy B(Tarrow_forwardWith the aid of diagram Define an electromagnet? Explain with the aid of diagram how electromagnetisms work? Explain with the aid of diagram what do you mean by right hand rule? Give some strength of electromagnetic fields. What do you mean by electromagnetic induction? Explain with the aid of diagram what is an electromagnetic wave? State the applications of electromagnetism.arrow_forward
- Understanding Motor ControlsMechanical EngineeringISBN:9781337798686Author:Stephen L. HermanPublisher:Delmar Cengage Learning