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RESEARCH PRODUCT
Hysteresis in the spin transition regime of [Fe(NH2trz)3](NO3)2 as probed by ZF-μSR
Vadim KsenofontovStewart J CampbellYann GarciaYves BolandJames S. LordP. Gütlichsubject
ParamagnetismMaterials scienceMuonCondensed matter physicsSpin crossoverRelaxation (NMR)MuoniumSpin transitionElectrical and Electronic EngineeringAtmospheric temperature rangeMuon spin spectroscopyCondensed Matter PhysicsElectronic Optical and Magnetic Materialsdescription
The thermal spin transition which occurs in the polymeric chain compound [Fe(NH(2)trz)(3)](NO3)(2) above room temperature has been investigated by zero-field muon spin relaxation (mu SR) (similar to 8-402 K). The depolarization curves are best described by a Lorentzian and a Gaussian line that represent fast and slow components respectively. The spin transition is associated with a hysteresis loop of width Delta T = 34 K (T-1/2(up arrow) = 346 K and T-1/2(down arrow) = 312 K) that has been delineated by the temperature variation of the initial asymmetry parameter. Comparison of zero-field and transverse field (20 Oe) mu SR measurements shows that diamagnetic muon species occur over the entire temperature range, a large fraction of muons being however paramagnetic. (c) 2005 Elsevier B.V. All rights reserved.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-03-01 | Physica B: Condensed Matter |