Vy. Nagy et al., CHOOSING REFERENCE SAMPLES FOR EPR CONCENTRATION MEASUREMENTS .4. SYSTEMS OF S=5 2/, Analytica chimica acta, 339(1-2), 1997, pp. 53-62
The papers of this series provide tabulated values that characterize t
he specific intensity of electron paramagnetic resonance (EPR) signals
(signal area per paramagnetic center) for a wide range of paramagneti
c species of various classes. These data enable one to choose a refere
nce material producing an EPR signal close in specific intensity to th
e signal of the species to be quantitated in the unknown or to determi
ne a correction factor when the specific intensities of the two signal
s are substantially different. The tabulated values comprise transitio
n probabilities and the derivatives of the resonance fields with respe
ct to frequency obtained by exact diagonalization of spin Hamiltonian
matrices; they can be used in field-swept X-band EPR quantitations of
solids. This part covers the S=5/2 paramagnetic centers in cubic and s
ome axial crystal fields.