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magnetic domains. itdescribes a region within a magnetic material which has uniform magnetization. This means that the individual magnetic moments of the atoms are aligned with one another and point in the same direction. Below a temperature called the Curie temperature, a piece of ferromagnetic material undergoes a phase transition and its magnetization spontaneously divides into many tiny magnetic domains, with their magnetic axes pointing in different directions. Magnetic domain structure is responsible for the magnetic behavior of ferromagnetic materials like iron. The regions separating magnetic domains are called domain walls where the magnetisation rotates coherently from the direction in one domain to that in the next domain.

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