Ferromagnetism is a kind of magnetism that is associated with cobalt, iron, and nickel and on some alloys or compounds containing one or more of the said elements, It also occurs in gadolinium, which is a rare-earth element. In comparison to other substances, ferromagnetic materials can be magnetized easily and in strong magnetic fields, the magnetization approaches a definite limit called stauration.
If an external field is applied and subsequently removed which does not return the magnetization to its original state or value it is called hysteresis. When heated to a certain temperature (Curie point), which is unique for each substance, ferromagnetic materials would somehow lose their magnetic properties and cease to be magnetic. Once they would cool down, their magnetism would return.
Answer: The correct answer is " its magnetic domains are constantly aligned".
Explanation:
Ferromagnetic materials are the materials that are magnetic. They are able to create permanent magnets. The magnetic moments of large number of atoms are aligned parallel to each other. These create a strong magnetization within the material.
They contain unpaired electrons. It is the reason that the ferromagnetic material has magnetism.
In ferromagnetic materials, the magnetic domains are constantly aligned.
Therefore, the correct answer is " its magnetic domains are constantly aligned".
