B. Anusuya et al., ESR INVESTIGATION OF THE PHOSPHORUS-RHENIUM CENTER IN GAMMA-IRRADIATED PHOSPHATE-DOPED AMMONIUM PERRHENATE, Journal of molecular structure, 372(1), 1995, pp. 41-47
Single crystals of ammonium perrhenate (NH4ReO4) doped with PO43- and
gamma-irradiated at RT (300 K) give rise to paramagnetic centers which
could be recorded both at RT and 77 K. The radical has been identifie
d as a pseudo V-k center, namely a PO42- radical associated with ReO4-
. The g-tensor and the hyperfine A-tenser are found to be axially symm
etric and are discussed in detail.