Paramagnetic Resonance and Magnetic Energy Levels in Chrome Alum

Abstract

Zavoisky¹ and also Cummerow and Halliday² have shown that a resonance absorption of high-frequency waves occurs in some paramagnetic salts in a magnetic field of appropriate value. This is due to induced transitions between two of the energy levels of the paramagnetic ion, the energy of which depends on the magnetic field. In the simplest case where the magnetic moment is due to spin only, the difference of energy is given by 2µ₀H, where µ₀ is the Bohr magneton and H the magnetic field. The resonance condition is then 2µ₀H = hv. The results obtained so far have shown a single resonance absorption with a peak very near the value given by the above relation.