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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. Hence these materials are used for making permanent magnets. In permanent magnets the movement of the domain wall is prevented. They are prepared by heating the magnetic materials to the required temperature and then quenching them. Impurities increase the strength of hard magnetic materials.
Soft magnetic materials are easy to magnetize and demagnetize.
These materials are used for making temporary magnets. The domain wall movement is easy. Hence they are easy to magnetize. By annealing the cold worked material, the dislocation density is reduced and the domain wall movement is made easier. Soft magnetic materials should not possess any void and its structure should be homogeneous so that the materials are not affected by impurities.
Hard materials have high resistance to deformation and are difficult to scratch, while soft materials deform easily and are more prone to scratching or denting. Hard materials are often used for cutting tools or structural components, while soft materials are used for cushioning or flexibility.
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What is the difference between soft and hard objects explain?
Soft objects have a low rigidity and can easily change shape when pressure is applied, while hard objects have high rigidity and maintain their shape under pressure. Soft objects often have a smooth surface texture, while hard objects are typically rough or firm to the touch. Examples of soft objects include pillows or sponge, while examples of hard objects include rocks or metal.
Why does something that is soft absorb more sound than something that is hard?
Soft materials have a porous structure that allows sound waves to penetrate and get trapped inside, reducing the sound's ability to bounce or reflect. In contrast, hard materials reflect sound waves, causing them to bounce off surfaces and remain in the environment. This difference in how sound waves interact with soft and hard materials contributes to the soft material's better sound absorption properties.
What is the difference between soft and hard magnets?
Soft magnets are easily magnetized and demagnetized, while hard magnets retain their magnetism once magnetized. Soft magnets have low coercivity and high permeability, making them suitable for applications like electromagnets. Hard magnets have high coercivity and are used in applications where a strong, lasting magnetic field is needed, such as in permanent magnets.
What is a hard bearing and a soft bearing What is the difference between them?
A hard bearing is made of a material that is strong and rigid, while a soft bearing is made of a material that is more pliable and flexible. Hard bearings are suitable for high load and high-speed applications, while soft bearings are used in applications where vibration damping and shock absorption are important. The main difference between them is the material properties, with hard bearings offering better load-carrying capacity and wear resistance, while soft bearings offer better compliance and vibration isolation.
What is the difference between soft and hard iron?
Soft iron is easily magnetized and demagnetized, making it suitable for use in temporary magnet applications. Hard iron, on the other hand, retains its magnetic properties for a longer period of time, making it ideal for permanent magnet applications. The main difference lies in their ability to retain magnetism.
What is the main difference Between hard and soft corals?
The difference is in the name; soft corals are soft have body ; with no bony or hard Parts
What is the difference between fracture and rupture?
Fracture is the cracking or breaking of a hard object. Rupture is the sudden bursting of a soft material object.
What is the difference between hard and soft copy in the computer?
well is that one is hard and the other one is soft.
Difference between hard and soft data?
Soft data is stored on a data disk or hard drive. Where as hard data is printed.
What is the difference between soft floor and hard floor?
a soft floor usually has carpet and a hard floor has wood or other things that are hard.
What is the difference between uranium hard and soft ore?
It is a difference between the hardness, generally expressed in the Mohs scale.
What is the difference between soft cheese and hard cheese?
hard cheese is hardend by FAT! and i like soft cheese better than hard cheese. =]
What is the difference between hard corals and soft corals?
The difference is in the name; soft corals have a soft body, with no bony or hard parts. In contrast, hard corals have a hard endoskeleton made of calcium carbonate.
What is one difference between soft money and hard money?
soft money is given in unlimited amounts
What is difference between hard and soft wood?
soft wood is easy to cut but not good to make stuff and hard wood is hard to cut but good to make with
What is the difference between a hard market and a soft market?
A soft market has more suppliers than buyers and hard market is the total opposite.
What is difference between hard X-Rays and soft X-Rays?
frequency for hard xray value
