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Esr And Spin-Lattice Relaxation Of Nd3+ In A Metallic Host: Larh2, S. A, Dodds, Jeff Sanny, R. Orbach
Esr And Spin-Lattice Relaxation Of Nd3+ In A Metallic Host: Larh2, S. A, Dodds, Jeff Sanny, R. Orbach
Physics Faculty Works
We report the first ESR observation of Nd3+ in a metal: cubic LaRh2. The resonance arises from a Γ6 ground state and exhibits hyperfine splitting at low temperature, allowing for positive identification. Above about 12 K, the ESR linewidth increases exponentially with temperature. We attribute this increase to the resonance phonon relaxation process involving the first excited state at 125±10 K.
Measurements Of Orbit-Lattice Coupling Of Er And Dy Impurities In Ag And Al Hosts, S. A. Dodds, Jeff Sanny
Measurements Of Orbit-Lattice Coupling Of Er And Dy Impurities In Ag And Al Hosts, S. A. Dodds, Jeff Sanny
Physics Faculty Works
The magnetic resonance of dilute Dy and Er impurities has been observed in thin polycrystalline Al and Ag films on two different substrates. The films are deposited at room temperature, and the measurements are made at liquid-helium temperatures. During cooling, the difference in thermal contraction between film and substrate produces an effectively uniaxial strain in the film. This results in an anisotropic g value, which we have used to obtain lower limits on the orbit-lattice coupling coefficient for these systems. We find values for V ( Γ 3g, 2 ) from 600 to 2000 cm − 1 , somewhat …