On the charge compensation effects in Mn(II) doped (NH<inf>4</inf>) <inf>2</inf>SbF<inf>5</inf>: EPR study

Electron paramagnetic resonance of Mn(II) ion doped in bis (ammonium) pentafluorostibnate is reported. Local charge compensation is proposed as the reason for the doubling of the expected single site. A ±20° rotation of the MnF53- moeity about the crystallographic a axis has been attributed to charge compensation processes. The D tensor is found to have the values Dzz=0.0358 cm-1, Dyy=-0.028 62 cm-1, Dxx=-0.007 26 cm-1; the Mn hyperfine coupling is found to be -0.0095 cm-1. The apical flourine does not give resolved hyperfine coupling, while the four basal flourine atoms give hyperfine couplings in the range amax=0.0018 cm-1, a min=0.0015 cm-1. © 1985 American Institute of Physics.