Author/Authors :
Blundell، نويسنده , , Susanna S.J. and Pattenden، نويسنده , , P.A. and Chow، نويسنده , , K.H. and Pratt، نويسنده , , F.L. and Sugano، نويسنده , , T. and Hayes، نويسنده , , W.، نويسنده ,
Abstract :
We present the results of a muon-spin rotation/relaxation (μSR) study in zero and longitudinal magnetic fields and temperatures down to 40 mK of para-cyanophenyl nitronyl nitroxide (p-CNPNN). This layered material is expected to show ferromagnetic interactions on the basis of susceptibility measurements. In a zero-field μSR experiment, the spins of muons which are implanted in diamagnetic states will precess in any local internal fields. Hence a study of precession frequencies and/or relaxation rates can be used to follow the magnetic order parameter as a function of temperature. We find strongly temperature dependent muon relaxation below ~0.17 K similar to that found recently in 1-NAPNN, indicating a magnetic transition at this temperature.
