AC Susceptometry

Gaining Insights into the Interplay between Optical and Magnetic Properties in Photoexcited Coordination Compounds

“…[163] The upper limit in terms of frequency range is given here by the ac current source which requires high enough compliance voltages in order to diminish the effect of inductance of the ac drive coil. [163] This means that ac SQUID magnetometry utilises the lowest frequencies of the presented methods and is mainly used to directly resolve processes on a ms to s timescale, i. e. relatively long timescales. Through fitting procedures it is however possible to gain rates of magnetic relaxation processes in SMMs which can be much faster.…”

“…SQUID magnetometry is an extremely sensitive technique (often better than 10 −7 emu) to investigate the magnetic moment of a sample. Dynamic properties of SMMs are most commonly investigated using alternating current (ac) measurements using frequencies between 0.01 and 10000 Hz [163] . The upper limit in terms of frequency range is given here by the ac current source which requires high enough compliance voltages in order to diminish the effect of inductance of the ac drive coil [163] .…”

“…Dynamic properties of SMMs are most commonly investigated using alternating current (ac) measurements using frequencies between 0.01 and 10000 Hz [163] . The upper limit in terms of frequency range is given here by the ac current source which requires high enough compliance voltages in order to diminish the effect of inductance of the ac drive coil [163] . This means that ac SQUID magnetometry utilises the lowest frequencies of the presented methods and is mainly used to directly resolve processes on a ms to s timescale, i. e. relatively long timescales.…”