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What does "orientation direction" mean?

What does "orientation direction" mean?
Update Time:2016-08-03

Most modern magnetmaterials have a "grain" in that they can be magnetized for maximumeffect only through one direction. This is the "orientationdirection", also known as the "easy axis", or "axis".

Un-orientedmagnets (also known as "Isotropic magnets") are much weaker thanoriented magnets, and can be magnetized in any direction. Oriented magnets(also known as "Anisotropic magnets") are not the same in everydirection - they have a preferred direction in which they should be magnetized.