Magnetic anisotropy and temperature dependence of the hyperfine fields ofCd111in single-crystalline cobalt
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Abstract
The magnetic anisotropy of single-crystalline cobalt and the temperature dependence of the hyperfine fields of cadmium in cobalt were studied by the perturbed-angular-correlation technique without any applied magnetic field. A uniaxial basal-plane anisotropy was found instead of the expected threefold one, and was explained by lattice-deformation-induced anisotropy. The obtained temperature dependence of the angle between the magnetization and the c axis is in agreement with the uniaxial anisotropy constants ${\mathit{K}}_{1}$ and ${\mathit{K}}_{2}$ found by torque magnetometry. The room-temperature values of the hyperfine fields are ${\mathit{B}}_{\mathrm{hf}}$=288(3) kG and ${\mathit{V}}_{\mathit{Z}\mathit{Z}}$=32(5)\ifmmode\times\else\texttimes\fi{}${10}^{15}$ V/${\mathrm{cm}}^{2}$.
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