constituted a separate phase of matter, modern science defines its unique features through its magnetic and structural behavior: : The defining feature of

), heating iron past the Curie point does not change the physical arrangement of atoms, only their magnetic ordering. : It is stable between

is its lack of permanent magnetism. Above the Curie point, thermal agitation overcomes the alignment of magnetic moments found in ferromagnetic

: It maintains the Body-Centered Cubic (BCC) lattice structure of . Unlike other transformations (like α→γalpha right arrow gamma

In metallurgy, ( ) refers to a specific non-magnetic state of iron that occurs when alpha iron ( ) is heated above its Curie temperature (