Coppersmith extensive degree it must be annealed. This process involves heating the metal and then rapidly cooling it in water. The cooling stage is known as quenching. By heating the copper, the molecules in the metal are relaxed, and thus able to align themselves in a more uniform fashion. This allows for easier shaping of the metal. In order to keep this uniformity within the metal, it is cooled instantly. This prevents the molecules from moving around and causing tension in the structure of the metal. Unlike ferrous metals—which must be cooled slowly to anneal—copper can be cooled slowly in air
Spin glass as the sample is cooled to the transition temperature, magnetization of the sample increases as described by the Curie law. Upon reaching "T", the sample becomes a spin glass and further cooling results in little change in magnetization. This is referred to as the "field-cooled" magnetization. When the external magnetic field is removed, the magnetization of the spin glass falls rapidly to a lower value known as the "remanent" magnetization. Magnetization then decays slowly as it approaches zero (or some small fraction of the original value—this remains unknown). This decay is non-exponential and no simple function can fit the curve