Spin cross-over in solid metal complexes

6 Spin cross-over in solid metal complexes 

DB or AC measurements are of course very valuable wherever spin interactions can be involved. A typical example is for an iron complex which suffers a change from high to low spin state when cooling below about 100 K. As Ps suffers a spin conversion reaction with the former state, measuring the narrow component (p-Ps) intensity of AC spectra gives direct information on the temperature at which the spin cross-over occurs [131]. 

Although some papers have appeared on the subject [132-135] applications of PAT in this field are still scarce and should be developed. 

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