[Triumf-seminars] TRIUMF ISAC Seminar today at 15:15

[postmaster@admin.triumf.ca]

---------------------- multipart/mixed attachment
Date/Time: Wed 2006-06-07 at 15:15

Location:  Auditorium          

Speaker:   Terry Parolin (UBC / TRIUMF)

Title:     Li-8 beta-NMR of an Enhanced Paramagnetic Metal: Palladium

Abstract: In this talk I will briefly cover the application of nuclear magnetic resonance (NMR) to the study of metals, and will then review the basics of the beta-NMR technique.  The use of beta-NMR to study metals in the form of films and heterostructures will be illustrated with results obtained from experiments using Pd.  This metal exhibits a large, exchange-enhanced Pauli spin susceptibility that places it very close to a ferromagnetic ground state.  As such, the properties of Pd and its alloys have attracted attention for numerous years. Here, I will present data collected from a sample of Pd foil and a Au/Pd/SrTiO_3 film that show unexpectedly large relative frequency shifts as a function of temperature for the Li-8 probes.  The observed shifts are much larger than the measured spin-lattice relaxation rates would lead one to predict.  The possible origins of this behavior will be discussed.  I will close with a short summary of results from recent studies using a much thinner film of Pd.  The data from this sample are quite distinct from that of the thicker samples.




______________________________

Subscription information available at http://admin.triumf.ca/netdata/seminars/list


---------------------- multipart/mixed attachment--