This document discusses magnetic materials and their properties. It begins by defining magnetic materials as those that can be attracted or repelled by an external magnetic field and can become magnetized. Examples given are iron and its alloys. The document then discusses several key magnetic properties including magnetic moment, magnetic field/intensity, magnetization vector, magnetic susceptibility, hysteresis, Curie temperature, and different types of magnetism such as diamagnetism, paramagnetism, ferromagnetism, antiferromagnetism, and ferrimagnetism. Finally, it provides examples of applications of magnetic properties including electric motors/generators, data storage, magnetic bearings, separators, medical uses, security, and braking systems.
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Classification of magnetic materials on the basis of magnetic momentVikshit Ganjoo
I made this presentation for my own college assignment and i had referred contents from websites and other presentations and made it presentable and reasonable hope you will like it!!!
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Classification of magnetic materials on the basis of magnetic momentVikshit Ganjoo
I made this presentation for my own college assignment and i had referred contents from websites and other presentations and made it presentable and reasonable hope you will like it!!!
Magnetic Field: The magnetic field is an imaginary line of force around a magnet which enables other ferromagnetic materials to get repelled or attracted towards it. Copy the link given below and paste it in new browser window to get more information on Magnetic Properties of Materials www.askiitians.com/iit-jee-magnetism/magnetic-properties-of-materials/
Spintronics is a NANO technology which deals with spin dependent properties of an electron instead of charge dependent properties.
One of the main advantage of spintronics over electronics is the magnets tend to stay magnetize which is sparking in the industry an interest for replacing computer’s semiconductor based components with magnetic ones, starting with the RAM.
With an all-magnetic RAM, it is now possible to have a computer that retains all the information put into it. Most importantly, there will be no ‘boot-up’ waiting period when power is turned on.
Another promising feature of spintronics is that it doesn’t require the use of unique and specialized semiconductor, there by allowing it to work with common metals like Cu, Al, Ag.
Spintronics will use less power than conventional electronics, because the energy needed to change spin is a minute fraction of what is needed to push charge around.
Conventional electronic devices ignore the spin property and rely strictly on the transport of the electrical charge of electrons.
Adding the spin degree of freedom provides new effects, new capabilities and new functionalities.
In this presentation file, i have briefly explained about Spintronics. it is a really new and a good concept for pressentation purpose. Hope it is helpful to you.
The concept, application of Giant Magneto Resistance is being discussed in the slides
The discovery of this phenomenon has caused vast developments in the field of spintronics
Dielectric and Magnetic Properties of materials,Polarizability,Dielectic loss...A K Mishra
In this PPT contains ,Dia,Para,Ferromagnetism,Clausius-Mossoti equation,Dielectric Loss ,Hysteresis,Hysteresis loss and its Applications,Determination of susceptibility,types of polarisation in mateials,relative permability
Magnetic Field: The magnetic field is an imaginary line of force around a magnet which enables other ferromagnetic materials to get repelled or attracted towards it. Copy the link given below and paste it in new browser window to get more information on Magnetic Properties of Materials www.askiitians.com/iit-jee-magnetism/magnetic-properties-of-materials/
Spintronics is a NANO technology which deals with spin dependent properties of an electron instead of charge dependent properties.
One of the main advantage of spintronics over electronics is the magnets tend to stay magnetize which is sparking in the industry an interest for replacing computer’s semiconductor based components with magnetic ones, starting with the RAM.
With an all-magnetic RAM, it is now possible to have a computer that retains all the information put into it. Most importantly, there will be no ‘boot-up’ waiting period when power is turned on.
Another promising feature of spintronics is that it doesn’t require the use of unique and specialized semiconductor, there by allowing it to work with common metals like Cu, Al, Ag.
Spintronics will use less power than conventional electronics, because the energy needed to change spin is a minute fraction of what is needed to push charge around.
Conventional electronic devices ignore the spin property and rely strictly on the transport of the electrical charge of electrons.
Adding the spin degree of freedom provides new effects, new capabilities and new functionalities.
In this presentation file, i have briefly explained about Spintronics. it is a really new and a good concept for pressentation purpose. Hope it is helpful to you.
The concept, application of Giant Magneto Resistance is being discussed in the slides
The discovery of this phenomenon has caused vast developments in the field of spintronics
Dielectric and Magnetic Properties of materials,Polarizability,Dielectic loss...A K Mishra
In this PPT contains ,Dia,Para,Ferromagnetism,Clausius-Mossoti equation,Dielectric Loss ,Hysteresis,Hysteresis loss and its Applications,Determination of susceptibility,types of polarisation in mateials,relative permability
a branch of nano electronics that will improve technology by adding new freedom degrees to electronic for transfer and store information better than electronic devices :)
IEEE presentation based on Spintronics & its semiconductor application specifically.
In the conclusion there is a hyperlink of a video which i'm unable to put here and hence i will give you the address of the video so that you can use the video and make the same hyperlink as i had made here.
TEDxCaltech-David Awschalom - Spintronics ( On YouTube)
video : 6:21- 7:13 (in video)
MAGNETISM and ELECTROMAGNETISM 2012.pptxmarkgrant78
Outlines the electrical principles regarding magnetism and its relation to electromagnetism and also their key role in the function of other electrical devices and equipment.
In our conventional electronic devices we use semi conducting materials for logical operation and magnetic materials for storage, but spintronics uses magnetic materials for both purposes. These spintronic devices are more versatile and faster than the present one. One such device is Spin Valve Transistors (SVT).
Spin valve transistor is different from conventional transistor. In this for conduction we use spin polarization of electrons. Only electrons with correct spin polarization can travel successfully through the device. These transistors are used in data storage, signal processing, automation and robotics with less power consumption and results in less heat. This also finds its application in Quantum computing, in which we use Qubits instead of bits.
SOME BASIC PRINCIPLES OF MAGNETISM (Autosaved).docxZocelynManingo1
Electric Current and Magnetism
The Nature of Magnetism: Electricity’s Silent Partner
Magnetism is a property of a material that enables to attract or repel other materials. The presence and strength of the material’s magnetic properties can be observed by the effect of the forces of attraction and repulsion on other materials.
What makes magnets?
Magnets are actually created by tiny spinning electrons in an atom. The electrons move about the nucleus and spin like a top, creating a tiny magnetic field.
If electrons are spinning in the same direction there is more magnetism, while electrons spinning in opposite directions cancel out each others’ magnetic fields. Magnetic fields are invisible, we can only see the effects of the magnetic force.
Magnetic Field: The space around a magnet in which a magnetic force is exerted
— The shape of a magnetic field is revealed by magnetic field lines
Directed away from north poles and toward south poles
Magnets have two ends or poles, called north and south poles. At the poles of a magnet, the magnetic field lines are closer together.
The magnetic field lines around horse-shoe and disk magnets are closest together at the magnets’ poles. Unlike poles of magnets attract each other and like poles of magnets repel. Magnetic Poles: A region on a magnet which produces magnetic forces
The poles of a suspended magnet will align themselves to the poles of the Earth
Fundamental Rule: Like poles repel; opposite poles attract
If a force of attraction only is possible between an object and a magnet, then the object interacting with the magnet contains a ferromagnetic substance and is considered naturally magnetic.
If a force of repulsion is only between an object and a magnet, then the object interacting with the magnet may also be a permanent magnet or a temporarily magnetized ferromagnetic material.
Materials which are attracted by a magnet are known as magnetic materials. Iron, cobalt, nickel and many alloys of these metals like steel and alnico are magnetic.
Magnetic materials can be used to make permanent or temporary magnets unlike the non-magnetic materials which cannot.
INDUCED MAGNETISM
The process by which the screws become magnets is called Electric/Magnetic Induction. This same process is the reason why magnets attract non-magnetized magnetic substances such as the screw. The screw becomes an induced magnet with the end nearer the magnet having an opposite polarity to that of the permanent magnet. Hence attraction happens after magnetic induction occurs. The quicker way to know the polarity of a permanent or induced magnet is by the use of a magnetic compass. Compass needle is a small magnet that is free to pivot in a horizontal plane about an axis and that the end of the magnet that points to geographic north is called the north (N) pole. Likewise, the opposite end of the magnet is the south (S) pole.What are magnetic domains?
Magnetic substances like iron, cobalt and nickel
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
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Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
1. Shree Swami Atmanand Saraswati Institute
Of
Technology
Topic :- Magnetic Material
Subject :- Physics
B.E.ELECTRICAL
1
CHAUHAN DARSHAN
DETROJA ELVISH
DHOLA RONAK
160760109008
160760109009
160760109010
DUBEY SAURABH 160760109011
GABANI KISHAN 160760109012
GHEVARIYA DHARAM 160760109013
GONDALIYA PRINCE 160760109014
2. What is Magnetic Materials ?
• Magnetic materials are those materials that
can be either attracted or repelled when
placed in an external magnetic field and can
be magnetized themselves.
• Examples: iron or its alloys which are used in
various electrical appliances like generators,
televisions, cassette recorders, magnetic core
computer memories etc. to increase the
magnetic flux without increasing the current.
2
3. What is Magnetic properties of Materials ?
It is common characteristics of Materials. Magnetic properties of material involve
concept based on the magnetic dipole moment. Some of the material has the ability
to create internal Dipole moment . For this reason this kinds of material present
special type of properties.
Some common characteristics of this material is …
1. attracting other magnetic material.
2. Inducing pole in this material .
3. The polarity of two pole are opposite .
4.When magnetizing occurring then some parameter of material is changed ( Current
I, Magnetic flux )
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4. The most common term which are related to magnetic
property .
1. Magnetic moment μm :
A vector quantity associated with the magnetic properties of
electric current loops or, more generally, magnets. It is equal to the
amount of current flowing through the loop multiplied by the area
encompassed by the loop, and its direction is established by the
right hand rule for rotations μm = IA Um
Um = A unit vector induced from loop as right hand rules
44
5. Magnetic field or Intensity
A field of force associated with changing electric fields, as when
electric charges are in motion. Magnetic fields exert deflective forces on
moving electric charges.
Most magnets have magnetic fields as a result of the spinning motion of
the electrons orbiting the atoms of which they are composed;
electromagnets create such fields from electric current moving through
coils
total magnetic field B in the material is given by
5
B = μ0(H + M)
H=B/ μ0
5
7. Magnetic susceptibility χm
In electromagnetism, the magnetic susceptibility χm is a dimensionless
proportionality constant that indicates the degree of magnetization of a material
in response to an applied magnetic field.
The Relation Between χm and μr ,
μr = 1+ χm 77
8. Hysteresis
In addition to the Curie temperature and saturation magnetization,
ferromagnetism can retain a memory of an applied field once it is removed. This
behavior is called hysteresis and a plot of the variation of magnetization with
magnetic field is called a hysteresis loop.
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9. Curie Temperature
Even though electronic exchange forces in ferromagnets are very large, thermal
energy eventually overcomes the exchange and produces a randomizing effect.
This occurs at a particular temperature called the Curie temperature (TC). Below
the Curie temperature, the ferromagnet is ordered and above it, disordered. The
saturation magnetization goes to zero at the Curie temperature. A typical plot of
magnetization vs temperature for magnetite is shown below.
99
11. Diamagnetism
Diamagnetism is a fundamental property of all matter, although it is usually very
weak. It is due to the non-cooperative behavior of orbiting electrons when exposed
to an applied magnetic field. Diamagnetic substances are composed of atoms
which have no net magnetic moments (ie., all the orbital shells are filled and there
are no unpaired electrons). However, when exposed to a field, a negative
magnetization is produced and thus the susceptibility is negative. If we plot M vs
H, we see:
1111
12. Paramagnetism
This class of materials, some of the atoms or ions in the material have a net
magnetic moment due to unpaired electrons in partially filled orbitals. One of the
most important atoms with unpaired electrons is iron. However, the individual
magnetic moments do not interact magnetically, and like diamagnetism, the
magnetization is zero when the field is removed. In the presence of a field, there is
now a partial alignment of the atomic magnetic moments in the direction of the
field, resulting in a net positive magnetization and positive susceptibility.
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13. Ferromagnetism
When you think of magnetic materials, you probably think of iron, nickel or
magnetite. Unlike paramagnetic materials, the atomic moments in these materials
exhibit very strong interactions. These interactions are produced by electronic
exchange forces and result in a parallel or antiparallel alignment of atomic
moments. Exchange forces are very large, equivalent to a field on the order of
1000 Tesla, or approximately a 100 million times the strength of the earth's field.
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14. Antiferromagnetism
the magnetic moments of atoms or molecules, usually related to the spins of
electrons, align in a regular pattern with neighboring spins (on different sublattices)
pointing in opposite directions. This is, like ferromagnetism and ferrimagnetism, a
manifestation of ordered magnetism. Generally, antiferromagnetic order may exist
at sufficiently low temperatures, vanishing at and above a certain temperature, the
Néel temperature (named after Louis Néel, who had first identified this type of
magnetic ordering).Above the Néel temperature, the material is typically
paramagnetic.
14
15. Ferrimagnetism
15
In physics, a ferrimagnetic material is one that has populations of atoms with
opposing magnetic moments, as in antiferromagnetism; however, in ferrimagnetic
materials, the opposing moments are unequal and a spontaneous magnetization
remains.Ferrimagnetism is exhibited by ferrites and magnetic garnets.
16. Application Of a Magnetic Property
In real world there many operation of magnetic property . This property is
use as two form as Electromagnetic field and magnetic field .
Electronic Motor and Generator
An electric motor that uses electromagnets
in the spinning stator to turn. There is an
electrical 'slip-ring' on the stator that directs
the power to a different magnet section of the
stator to achieve rotation. Quick & dirty, but t
here are books written on the subject.
1616
17. Magnetic storage
Magnetic storage and magnetic recording are terms from engineering
referring to the storage of data on a magnetized medium. Magnetic storage uses
different patterns of magnetization in a magnetizable material to store data and is a
form of non-volatile memory. The information is accessed using one or more
read/write heads.
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18. Magnetic bearing
A magnetic bearing is a bearing which supports a load using magnetic
levitation. Magnetic bearings support moving machinery without physical contact,
for example, they can levitate a rotating shaft and permit relative motion with very
low friction and no mechanical wear.
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19. Magnetic separator and Holding
Device
Magnetic separator for particle size less than 3mm magnetite, pyrrhotite,
ilmenite and other materials, wet magnetic separation, but also for coal, non-
metallic minerals, building materials and other materials in addition to iron
work.Available downstream, semi-reflux, reflux-type and other forms of magnetic
separator, cylinder surface magnetic field strength can be produced according to
the actual use of the special.
1919
20. Medical Applications
The Attraction of Magnet Therapy
Some magnets are multipolar, with both the north and south poles facing the
patient/desired body part, often with manufacturers touting that their circular or
checkerboard or triangular pattern is in some way superior. But this also further
limits how far the magnetic field reaches. Any effect inside the body must be
limited to a few millimeters, only skin deep.
2020
21. Magnetic Resonance Angiogram (MRA)
A magnetic resonance angiogram (MRA) is a type of magnetic resonance
imaging (MRI) scan that uses a magnetic field and pulses of radio wave energy
to provide pictures of blood vessels inside the body. In many cases MRA can
provide information that can't be obtained from an X-ray, ultrasound, or
computed tomography (CT) scan.
2121
22. For Security Purpose
Burglar alarm
Passive magnetic field detection
This buried security system is based on the Magnetic Anomaly Detection
principle of operation. The system uses an electromagnetic field generator
powered by two wires running in parallel. Both wires run along the perimeter and
are usually installed about 5 inches apart on top of a wall or about 12"/30 cm
below ground. The wires are connected to a signal processor which analyzes any
change in the magnetic field.
2222
23. Eddy current brake
An eddy current brake, like a conventional friction brake, is responsible for
slowing an object, such as a train or a roller coaster. However, unlike electro-
mechanical brakes, which apply mechanical pressure on two separate objects,
eddy current brakes slow an object by creating eddy currents through
electromagnetic induction which create resistance, and in turn either heat or
electricity.
2323
24. Magnetic relays
A type of overload relay that senses the strength of the magnetic field that the
current flow produces. Magnetic relays are often used in areas that experience
extreme changes in temperature.
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