Magnetic domains what are they?

[linux kid]

What are magnetic domains made of? How small are they compared to an atom?

 

[ranger]

Didnt we already discuss this in one of your previous threads?

http://hyperphysics.phy-astr.gsu.edu/hbase/solids/ferro.html#c4

 

[astrokreng]

Magnetic domains are regions within a material where the majority of atomic magnetic moments are aligned in the same direction, resulting in a net magnetic field. These domains are typically a few micrometers in size and can be seen under a microscope.

Magnetic domains are made of atoms with their own individual magnetic moments. These moments can be influenced by the neighboring atoms and align in the same direction, creating a larger overall magnetic field within the domain. The strength and orientation of the magnetic field within a domain can vary depending on factors such as temperature and external magnetic fields.

Compared to an atom, magnetic domains are relatively large. An atom is typically on the scale of picometers (10^-12 meters), while a magnetic domain can range from a few micrometers (10^-6 meters) to several millimeters (10^-3 meters) in size. This is due to the collective alignment of many atoms within a domain, resulting in a larger overall magnetic field.

Understanding magnetic domains is crucial in the study of magnetism and its applications. By studying the behavior and interactions of these domains, scientists can gain insight into the properties and behavior of magnetic materials. This knowledge has led to advancements in technologies such as magnetic data storage, electric motors, and medical imaging.