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Colour: black, opaque.
Streak: black.
Lustre: metallic or dull.
Cleavage: none.
Hardness: 5.5-6.5.
Specific Gravity: 5.2.
Its diagnostic feature is that it is highly magnetic.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoThe 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.
Wiki User
∙ 9y agoAfter magnetization, they remain magnetic due to high levels of Br and Hc.
Wiki User
∙ 13y agoA magnet's characteristics are to attract any metal which has the slightest element of iron.It is naturally found first discovered by the Chinese.
Wiki User
∙ 12y agomaterials, magnets in particular. a negative charge attracts a positive charge.
Wiki User
∙ 8y agoIron.
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Why does hard iron retain magnetism?
Coercivity is the property describing the ability of magnetic material to retain magnetism. Compared to soft iron, hard iron has larger magnetic domains, regions of the crystal where atomic magnetic fields have similar orientation. Materials with fewer, bigger domains within a given volume have higher coercivity than materials with many small domains. Hard iron can still lose its magnetism, as all permanent magnets can be demagnitized if strong enough fields are involved. Soft iron loses magnetism simply by removing it from a magnetic field. Some "rare earth" metal alloys can retain magnetism much better than hard iron, since they can have much larger domains.
What are the only materials that can become magnetic?
Ferritic materials.
What is saturation in magnetic materials?
saturation occurs when a magnetic material is as magnetized as it can get.
What are materials attracted by a magnet called?
It is called the magnetic force. This is a force caused by the attraction or repulsion of the magnetic fields of the materials.
Why is iron a soft magnetic material?
Because pure iron can gain or lose a magnetic field very quickly. A hard magnet (certain steels) will hold its field indefinitely (unless heated to too high a temp).
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.
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 is the difference between soft and hard magnets?
A soft magnet's magnetic field can be broken easily. A hard magnet's magnetic field can not be broken easily.
What are hard and soft magnets?
Hard magnets are those which require a high magnetic field so as to be magnetized. Soft magnets are those which acquire high magnetic flux when a little magnetic force is applied onto them.
What has the author Chih-wen Chen written?
Chih-wen Chen has written: 'Magnetism and metallurgy of soft magnetic materials' -- subject(s): Magnetic materials, Magnetism, Physical metallurgy
Why does hard iron retain magnetism?
Coercivity is the property describing the ability of magnetic material to retain magnetism. Compared to soft iron, hard iron has larger magnetic domains, regions of the crystal where atomic magnetic fields have similar orientation. Materials with fewer, bigger domains within a given volume have higher coercivity than materials with many small domains. Hard iron can still lose its magnetism, as all permanent magnets can be demagnitized if strong enough fields are involved. Soft iron loses magnetism simply by removing it from a magnetic field. Some "rare earth" metal alloys can retain magnetism much better than hard iron, since they can have much larger domains.
What are the characteristic of hard materials?
After magnetization, they remain magnetic due to high levels of Br and Hc.
Do Hard magnetic materials make excellent permanent magnets?
Yes - in magentic terms, "hardness" = "permanence".
Are materials with magnetic properties magnetic materials?
Here's the answer plain and simple, no. .
What are non magnetic materials called?
Non-magnetic materials are referred to as diamagnetic.
What are some examples of soft brittle hard materials?
iron and copper are hard materials .
