Journal of Physics F Metal Physics · 1977 · 15 citations · 4 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMetallic MaterialsSolid State PhysicsAlloysAntiferromagnetic MaterialsAntiferromagnetismHyperfine StructureMagnetic Properties Of SolidsMagnetism In SolidsCharge ScreeningHeusler AlloysHyperfine Field DeterminationHyperfine InteractionsImpuritiesImpurity DefectsImpurity StatesMagnetic Hyperfine Splitting
The magnetic hyperfine field, Bhf, has been determined for cadmium as an impurity element in Heusler alloys of the types Pd2MnY (Y=In,Sn,Sb) and PtMnY (Y=Sn,Sb) at a temperature of 77K. The measured fields were -19.4(1) T and -22.5(2) T for Cd in Pd2MnSn and Pd2MnSb, respectively, whereas the average field for Cd in Pd2MnIn (which is antiferromagnetic) was zero with a distribution of Delta Bhf=1.2(1) T. For Cd in PtMnSn and PtMnSb, positive fields were observed, +9.5(5) T and +16.1(1) T, respectively. The positive field can be explained if it is assumed that Cd atoms in these alloys are not going into Y positions as usual, but rather into interstitial or 'empty' positions in the lattice, giving a higher screening charge.
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