Spin excitations in stripe-ordered La2-xSrxNiO4 (x=0.275 and 1/3)
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/ Abstract
Abstract We report neutron scattering measurements of the spectrum of magnetic excitations in the stripe-ordered phase of La 2− x Sr x NiO 4 ( x =0.275 and 1 3 ). The propagating spin excitations follow a similar dispersion relation for the two compositions, but the line widths are broader for x =0.275 than for 1 3 .
Journal: Journal of Magnetism and Magnetic Materials