What Makes a Material Magnetic? | Sciencing

A piece of magnetic material, placed equidistant from both magnets, would be attracted to the stronger of the two magnetic fields So when two magnets of similar polarity approach one another, they appear to push away or be repulsed when in fact they are seeking a higher magnetic field...

Magnet - Wikipedia

A "horseshoe magnet" made of alnico, an iron alloyThe magnet, made in the shape of a horseshoe, has the two magnetic poles close togetherThis shape creates a strong magnetic field between the poles, allowing the magnet to pick up a heavy piece of iron...

Analysis of an ultra hard magnetic , - Materials Today

Materials Today is a community dedicated to the creation and sharing of materials science knowledge and experience Supported by Elsevier, we publish high impact peer-reviewed journals, organize academic conferences, broadcast educational webinars and so much more...

Classes of Magnetic Materials - Institute for Rock Magnetism

Classes of Magnetic Materials The origin of magnetism lies in the orbital and spin motions of electrons and how the electrons interact with one another The best way to introduce the different types of magnetism is to describe how materials respond to magnetic fields This may be surprising to some, but all matter is magnetic...

Chapter 2 Magnetic Materials and Their Characteristics

The permeability of a magnetic material is a measure of the ease in magnetizing the material Permeability, u, is the ratio of the flux density, B, to the magnetizing force, H...

Soft and Hard Magnetic Materials | Electricalvoice

Soft Magnetic Materials These materials are easy to magnetise and demagnetise These materials favour rapid switching (it means high frequency) of magnetism to applied ac field These materials have low retentivity Low coercivity High permeability High magnetic saturation Low hysteresis losses because of the lesser area of the hysteresis loop...

Magnetic Properties - NPTEL

Magnetic field Strength If a magnetic field, H, is generated by a cylindrical coil (solenoid) of n turns and length l, H = nI/l (A/m) Magnetic flux density, B: It is the magnitude of the field strength within a substance subjected to a field H B = H (Tesla or Weber/m2) , called thepermeability, is the measure of the degree to which a material can be magnetized...

1819 Briefly explain why the magnitude of the saturation ,

1819 briefly explain why the magnitude of the , On the basis of the data in Tables 185 and 186, would you classify this material as a soft or hard magnetic material? Why? 1826 A ferromagnetic material has a remanence of 125 teslas and a coercivity of 50,000 A/m...

What Is the Difference Between a Permanent Magnet and a ,

Typically, permanent magnets are made from "hard" magnetic materials where "hard" refers to a material's ability to become magnetized and remain magnetized Steel is an example of a hard magnetic material...

Magnetism for kids - A simple introduction

One of the most amazing things about magnets is the way they can attract other magnets (or other magnetic materials) "at a distance," invisibly, through what we call a magnetic field , We call those materials magnetically hard , atomic theory can explain many of the things we know about magnets, including paramagnetism (the way magnetic ....

What is the difference between hard and soft magnetic ,

Materials which retain their magnetism and are difficult to demagnetize are called hard magnetic materials These materials retain their magnetism even after the removal of the applied magnetic field...

What Is the Difference Between a Permanent and Temporary ,

The materials that form temporary magnets are known as soft magnetic materials, and consist of materials like annealed iron The main difference between hard and soft magnetic materials is their coercivity, or the threshold an external magnetic or electric field would have to exceed in order to demagnetize the material...

The Hysteresis Loop and Magnetic Properties - nde-edorg

The Hysteresis Loop and Magnetic Properties A great deal of information can be learned about the magnetic properties of a material by studying its hysteresis loop A hysteresis loop shows the relationship between the induced magnetic flux density (B) and the magnetizing force (H)It is often referred to as the B-H loop...

Difference between Hard Magnetic Material and Soft ,

Difference between Hard Magnetic Material and Soft Magnetic Material Posted on November 24, 2016 / Posted by Jeniffer Fleming Compare, distinguish and explain what is the difference between Hard Magnetic Material and Soft Magnetic Material...

Hysteresis in magnetic materials

Hysteresis Loop It is customary to plot the magnetization M of the sample as a function of the magnetic field strength H, since H is a measure of the externally applied field which drives the magnetization ...

Magnetic Hard Disks - Fuji Electric

Magnetic hard disks are key components of hard disk drives for computers Demand for high-performance disks is rising dramatically, driven by increasingly information , ing to different magnetic materials 34 Hard protective films to reduce magnetic spacing Until contact recording can be implemented, flying head recording is the mainstream ....

Chapter 7 Magnetic Recording Fundamentals

Figure 0-1 shows the B-H characterisation curves for soft and hard magnetic materials SOFT MAGNET HARD MAGNET H<10Oe H >100 Oe c c B B H H Hc Br Br Figure 0-1 B-H magnetisation curves 72 Read/Write head The "guts" of a magnetic recording system are: the write head, the magnetic medium....

Magnetic Hysteresis Loop including the B-H Curve

Magnetic Hysteresis Loops for Soft and Hard Materials Magnetic Hysteresis results in the dissipation of wasted energy in the form of heat with the energy wasted being in proportion to the area of the magnetic hysteresis loop...

Applications of Magnetic Smart Materials - Ioniqa

Magnetic fluids are also used for the separation of magnetic from non-magnetic materials and for the separation of materials by their density For instance when recycling metals in waste or separating diamond from gangue material in the mining industry...

What is a Magnetic Disk? - Definition from Techopedia

A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data It is covered with a magnetic coating and stores data in the form of tracks, spots and sectors...

Lecture 26 Magnetic Domains - Free Online Course Materials

Hard magnetic materials are use in hard drives, where 1 bit of information is actually 1 domain magnetized to saturation or demagnetized to zero, the bits are generally referred to as per square inch...

Comparison Between Soft and Hard Magnetic Materials ,

Comparison Between Soft and Hard Magnetic Materials - Download as Word Doc (doc / docx), PDF File (pdf), Text File (txt) or read online , principles and mechanisms that explain the magnetic phenomenon are complex and subtle, and , Comparison between Soft and Hard Magnetic Materials,...

Magnets And Magnetism For Kids With Pictures & Examples

Magnets And Magnetism For Kids , Inside a piece of magnetic material, there are many tiny magnetic regions called domains Each has a north and a south pole, just like any magnet , At the heart of a computer hard drive is a spinning disc with a magnetic surface The data is stored on the disc in the form of magnetic patterns...

Soft Magnetic Materials - electrical4u

Magnetic materials are mainly classified (based on the magnitude of coercive force) into two- hard magnetic materials and soft magnetic materials, Now, we can come to the topic The soft magnetic materials can be simply magnetised and demagnetised...

Classifications of Magnetic Materials by Ron Kurtus ,

Classifications of Magnetic Materials by Ron Kurtus (revised 23 March 2012) Materials respond differently to the force of a magnetic field There are three main classifications of magnetic materialsA magnet will strongly attract ferromagnetic materials, weakly attract paramagnetic materials and weakly repel diamagnetic materials...

What Is a Hard Drive? - Types, Function & Definition ,

A hard disk drive consists of a rigid disc made with non-magnetic material, which is coated with a thin layer of magnetic material Data is stored by magnetizing this thin film...

Magnetic Materials - Encyclopedia of Life Support Systems

Other classifications for types of magnetic materials are subsets of soft or hard materials, such as magnetostrictive and magnetoresistive materials This chapter will start by describing in basic terms the origin of magnetism and the...

Explain what is meant by soft and hard magnetic materials ,

Soft magnets lose there magnetic nature quite easily,also there hysteresis loop has lesser area whereas hard magnets are just the opp,so softer magnets can be magnetized and demagnetized quite easily which finds use in making electromagnets,and hard ones make grt permanent magnets...

What are soft and hard magnetic materials? State the ,

Hard Magnetic Materials; 1: Soft magnetic materials are those materials which have a smaller area enclosed by their Hysteresis loop: Hard magnetic materials are those materials which have a Larger area enclosed by their Hysteresis loop: 2: They have low remnant magnetization:...

How can you shield a magnet? - coolmagnetman

This is a collection of metal plates which can be placed over a magnet or electromagnet, and the strength of the magnetic field on the top side of the plate can be measured, determining how well it shields the magnetic ,...