Spin transition in Fe(phen)_2(NCS)_2 -μSR study

摘要

The reversible thermal spin transition which occurs in [Fe(phen)_2(NCS)_2] around T_(1/2) ～ 177 K has been investigated by muon spin relaxation (μSR) (～10-280 K). The depolarisation curves are well described by two Lorentzian lines represent fast and slow components in the decay curves, with the initial asymmetry parameter of the fast component found to track the spin transition in [Fe(phen)_2(NCS)_2]. Comparison of zero-field and transverse field (20 Oe) μSR measurements shows that diamagnetic muonic species occur over the entire temperature range.