High energy magnetic excitations in single domain homogeneous antiferromagnetic gamma-Mn(18%Cu) alloy at 10 K

摘要

Measurements of spin waves in homogenous antiferromagnetic single domain fct (gamma)-Mn(18%Cu) alloy at 10K were performed up to energies of 82.7 meV yielding v=224(plus minus)3MeV(angstrom),E(sub g)=7.8(plus minus)0.2meV and damping parameters (Gamma)(sub 1)=101. 4(plus minus)2.4meV(angstrom). There is a evidence on the anisotropy of the spin wave dispersion relation.