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What is the difference between hard and soft magnetic materials?
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.
What is the difference between hard and soft material?
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.
What are materials that transmit some light?
The word for materials that transmit some light is translucent.
What makes some sounds loud and some sounds soft?
When you bang something soft the sound will be soft and when you bang something hard the sound will be loud.The same with talking, if you talk loudly the sound will be loud and when you talk quietly the sound will be soft.
Why do soft materials work best in petrifying springs?
Because as the spring water evaporates, it leaves behind crystals of calcium carbonate.
What is a soft sculpture?
A soft sculpture is made using soft materials, such as cloth, rubber, plastic, paper, and materials that are nonrigid.
What hard or soft materials would be best for a room where you watch TV or listen to music?
Some soft cushions may help make you comfortable.
What are some examples of soft brittle hard materials?
iron and copper are hard materials .
Does nail polish eat away soft materials?
yes
What materials did aboriginal people use to make clothes?
Soft
What are hard and soft materials?
The magnetic materials which can magnetise and de-magnetise easily are called "soft magnetic materials" example:-ferrites,iron-cobalt alloy. The magnetic materials which cannot magnetise and de-magnetise easily are called "hard magnetic materials" example:-aluminium(al),nickel-cobalt alloy.
Soft headboards that are cheap?
You can find soft headboards for cheap in a range of materials from cotton to inflatable. Look at www.walmart.com for affordable soft headboards and www.nextag.com.
Is DT resistant materials a soft GCSE option?
As long as you keep up with the gcse resistant materials corsework
What are the materials needed for which soft drink contains the most fizz?
i am pretty
Fossils of fungi are rare due to fungis?
Their composition of soft materials.
What are some phrases that start with As soft as?
As soft as silk As soft as a feather As soft as a cloud As soft as velvet
How do soft drink affect different material?
soft drinks contains acid which dematerialises any materials over a period of time
