User:Moses700/sandbox

== The individual spins in a spin glass have random orientations and are disordered. Because of disorder an individual spin receives conflicting signals from different competing interactions like ferromagnetic  (where spins have the same orientation) and antiferromagnetic  (where spins have exactly the opposite orientation). This creates what is known as frustration – distortions in the geometry of spins compared to what would be seen in a regular, fully aligned solid. They may also create situations where more than one geometric arrangement of atoms is stable. == AC Susceptibility

AC susceptibility is an important characterization technique to characterize the spin glass behavior. Since spin glass state is formed below a certain temperature called freezing temperature Tf , the AC susceptibility measurement spans the Tf. By plotting the real or in-phase component of the AC susceptibility (Χ`) as a function of temperature a cusp is formed at Tf which determine its value. The peak or cusp in Χ` decreases in magnitude and shifts to higher temperatures with the increase of frequency i.e. the value of Tf varies with the frequency of the AC susceptibility. This feature is a strong signal of the existence of spin glass state and is not found in any other magnetic state.