How can i define hard magnet and soft magnet? ... i have studied the magnetic property of the ni based film. its coercivity isg.is it hard or soft magnetic material? is there any range for ...Chat Online
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Electrical engineering assignment help, explain and draw hysteresis loop for soft magnetic material, draw the hysteresis loop for a soft magnetic material and compare it with the hysteresis loop of hard magnetic material. give two examples of each. soft and hard magnetic materials: all ferromagnetic materials are divided in two wide groups' soMore Details
Explain hard magnetic material &#; magnetic materials help explain how arctic ice melts. ... measuring the overall area of melt ponds is a hard problem. this is where golden comes in. ... when all the atoms in a piece of material ...More Details
&#; last lecture we have discussed the energies (hamiltonians) contributing to the magnetization process: hˆ ex j ˆ ijs ˆ isj i,j hˆ b l sˆ fie d b i i but neither of the hamiltonians above can explain why there exists a coercive field or why m hc & m hc . (here m is magnetic susceptibility and hc is coercive field). the key to these question lies inMore Details
Samarium cobalt (smco) is a magnetic material made of an alloy of the rare earth element samarium and hard metal cobalt as well as traces of iron, copper, hafnium, zirconium and praseodymium. like neodymium, samarium cobalt magnets are known as rare earth magnets as samarium is part of the same rare earth group of elements as neodymium.More Details
&#; materials which have magnetic moments arising from spin and orbital angular momentum of electrons are magnetic materials.the magnetic moment per unit volume is called magnetization or magnetic polarization, denoted by j.the magnetization is a vector quantity and its unit is wb/mor t (tesla). the magnetization of a magnetic material is affected by strength and direction of an applied ...More Details
Magnetic properties of materials. 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.the magnetic field lines are formed due to various reasons like orbital movement of electrons, current flowing in a conductor etc.More Details
&#; 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. hard disks, zip disks and floppy disks are common examples of magnetic disks.More Details
&#; magnetic materials are classified in terms of their magnetic properties and their uses. if a material is easily magnetised and demagnetised then it is referred to as a soft magnetic material, whereas if it is difficult to demagnetise then it is referred to as a hard (or permanent) magnetic material.More Details
Characteristics and classification of magnetic material. magnetic material is mainly classified as permanent ferromagnetic material and soft ferromagnetic material. permanent ferromagnetic material is also called hard ferromagnetic material; the material can keep the strong magnetic force after applying an external magnetic field. ...More Details
The platters are the most important parts of a hard drive. as the name suggests, they are disks made from a hard material such as glass, ceramic, or aluminum, which is coated with a thin layer of metal that can be magnetized or demagnetized.a small hard drive typically has only one platter, but each side of it has a magnetic coating.More Details
&#; a hard disk drive (hdd), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that uses magnetic storage to store and retrieve digital information using one or more rigid rapidly rotating disks coated with magnetic material.the platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces.More Details
&#; most permanent magnet devices will use soft magnetic materials to channel flux lines or provide a return path for magnetic fields, e.g. mri body scanners have large permanent magnets with a yoke of soft magnetic material to prevent self demagnetising fields …More Details
&#; hysteresis when a ferromagnetic material is magnetized in one direction, it will not relax back to zero magnetization when the imposed magnetizing field is removed. it must be driven back to zero by a field in the opposite direction. if an alternating magnetic field is applied to the material, its magnetization will trace out a loop called a hysteresis loop.More Details
&#; material responds to a magnetic field and as a consequence the susceptible is a function of applied magnetic field. therefore, ferromagnetic materials are usually compared in terms of saturation magnetisation (magnetisation when all domains are aligned) rather than susceptibility. in the periodic table of elements only fe, co and ni are ...More Details
Permanent magnets and hard magnetic materials f a, or the ‘magnetic anisotropy’.usually, f a is expressed in terms of simple sine or cosine functions. for hexagonal crystals, f a d ksincksincksincksincos6˚ and for tetragonal crystals,More Details
&#; the magnetic material is the paramount player in the design of magnetic components. the magnetics design engineer has three standard words when making the normal design trade-off study: cost, size, and performance. he will be happy to stuff any two into the bag. the magnetics engineer is …More Details
&#; material-process technologies for magnetic hard disks next generation hdi technologies for magnetic hard disksmagnetic hard disks for audio-visual applicationsautomation of magnetic hard disk production linesultra-clean technology for high density magnetic hard diskscover photo: the personal computer (pc) isMore Details
&#; the domain growth of these materials can be easily realised. they are mainly used to increase the flux or/and to make a way for the flux created by the electric current.the main parameters used to worth or consider the soft magnetic materials are permeability (used to determine how a material reacts to the applied magnetic field), coercive force (which already discussed), electrical ...More Details
Transformer core requires magnetization, demagnetization and reverse magnetization during operation. the energy expended in doing so in the form of hysteresis losses should be minimum. this corresponds to low coercive force on the magnetization cu...More Details
The magnetic hysteresis loop above, shows the behaviour of a ferromagnetic core graphically as the relationship between b and h is non-linear. starting with an unmagnetised core both b and h will be at zero, pointon the magnetisation curve.. if the magnetisation current, i is increased in a positive direction to some value the magnetic field strength h increases linearly with i and the flux ...More Details
Permanent magnets differ from temporary magnets by their ability to remain magnetized without the influence of a nearby external magnetic field. 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.More Details
&#; magnetic materials.ferromagnets. a ferromagnetic material is one that has magnetic properties similar to those of iron. in other words, you can make a magnet out of it. some other ferromagnetic materials are nickel, cobalt, and alnico, an aluminum-nickel-cobalt alloy. magnetic fields come from currents.More Details
&#; material descriptionwhat do your senses tell you. these properties determine how you you interact with the products i.e. the look and feel.some are directly related to their mechanical and physical propertiesdensity/heavy, cold/thermal conductivity, hard/impact resistance etc.More Details
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