K. W. H. Stevens | Researchain

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Solid State Communications | 1984

Electron paramagnetic resonance of the “reentrant” insulating spin-glass EuxSr1-xS

F. Mehran; K. W. H. Stevens; F. Holtzberg; R.L. Melcher; W.J. Fitzpatrick; T.R. McGuire

Abstract Electron paramagnetic resonance is reported in the paramagnetic region of the insulating spin-glass Eu x Sr 1-x S for concentration ranges that exhibit both ferromagnetic and spin-glass phases. From the temperature dependence of the line positions and line widths, the low temperature phases can be anticipated and explained in terms of the energy level distributions of the total spin states.

Magnetism and Magnetic Materials | 1972

Electron Paramagnetic Resonance of SmS(Eu), SmSe(Eu), SmTe(Eu) and SmTe(Mn)

F. Mehran; K. W. H. Stevens; R. S. Title; F. Holtzberg

Electron paramagnetic resonance of Eu doped samarium chalcogenides and Mn doped samarium telluride show as much as 10% variations in g‐values from the usual value of S‐state ions near g ≈ 2. These shifts are caused by exchange interactions between the impurity and the Sm2+ ions.Electron paramagnetic resonance of Eu doped samarium chalcogenides and Mn doped samarium telluride show as much as 10% variations in g‐values from the usual value of S‐state ions near g ≈ 2. These shifts are caused by exchange interactions between the impurity and the Sm2+ ions.

Physical Review B | 1983