Physics for Information Science: Unit III: Magnetic Properties of Materials
Diamagnetic Material
Properties, Effect of external field, Examples
In a diamagnetic material, the electron orbits are more or less random, and mostly all the magnetic moments are cancelled.
DIAMAGNETIC
MATERIAL
In
a diamagnetic material, the electron orbits are more or less random, and mostly
all the magnetic moments are cancelled. Similarly all the spin moments are
almost paired i.e., they have even number of electrons and has equal number of
electrons spinning in two opposite directions as shown in Fig. 3.5. Hence the
net magnetic moment in the diamagnetic material is zero. Therefore most of
these materials do not have magnetism in the absence of magnetic field.
Effect of external field
When
an external magnetic field is applied, the electrons reorient in such a way
that they align perpendicular to the field direction and their magnetic moments
opposes the external magnetic field. This will reduce the magnetic induction
present in the specimen.
Properties
1.
They repel the magnetic lines of force (Fig. 3.6)
2.
Susceptibility is negative and it is independent of temperature and applied
magnetic field strength.
3.
Permeability is less than 1.
4.
There is no permanent dipole moment, so they are called weak magnets.
5.
When temperature is less than critical temperature diamagnetics become normal material.
Examples.
Gold, Germanium, Silicon etc.
Physics for Information Science: Unit III: Magnetic Properties of Materials : Tag: : Properties, Effect of external field, Examples - Diamagnetic Material
Physics for Information Science: Unit III: Magnetic Properties of Materials
Under Subject
Physics for Information Science
PH3256 2nd Semester CSE Dept | 2021 Regulation | 2nd Semester CSE Dept 2021 Regulation
Related Subjects
Professional English II
HS3251 2nd Semester 2021 Regulation | 2nd Semester Common to all Dept 2021 Regulation
Statistics and Numerical Methods
MA3251 2nd Semester 2021 Regulation M2 Engineering Mathematics 2 | 2nd Semester Common to all Dept 2021 Regulation
Engineering Graphics
GE3251 eg 2nd semester | 2021 Regulation | 2nd Semester Common to all Dept 2021 Regulation
Physics for Electrical Engineering
PH3202 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation
Basic Civil and Mechanical Engineering
BE3255 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation
Electric Circuit Analysis
EE3251 2nd Semester 2021 Regulation | 2nd Semester EEE Dept 2021 Regulation
Physics for Electronics Engineering
PH3254 - Physics II - 2nd Semester - ECE Department - 2021 Regulation | 2nd Semester ECE Dept 2021 Regulation
Electrical and Instrumentation Engineering
BE3254 - 2nd Semester - ECE Dept - 2021 Regulation | 2nd Semester ECE Dept 2021 Regulation
Circuit Analysis
EC3251 - 2nd Semester - ECE Dept - 2021 Regulation | 2nd Semester ECE Dept 2021 Regulation
Materials Science
PH3251 2nd semester Mechanical Dept | 2021 Regulation | 2nd Semester Mechanical Dept 2021 Regulation
Basic Electrical and Electronics Engineering
BE3251 2nd semester Mechanical Dept | 2021 Regulation | 2nd Semester Mechanical Dept 2021 Regulation
Physics for Civil Engineering
PH3201 2021 Regulation | 2nd Semester Civil Dept 2021 Regulation
Basic Electrical, Electronics and Instrumentation Engineering
BE3252 2021 Regulation | 2nd Semester Civil Dept 2021 Regulation
Physics for Information Science
PH3256 2nd Semester CSE Dept | 2021 Regulation | 2nd Semester CSE Dept 2021 Regulation
Basic Electrical and Electronics Engineering
BE3251 2nd Semester CSE Dept 2021 | Regulation | 2nd Semester CSE Dept 2021 Regulation
Programming in C
CS3251 2nd Semester CSE Dept 2021 | Regulation | 2nd Semester CSE Dept 2021 Regulation