Spin Waves in Heusler Alloys Pd₂MnSn and Ni₂MnSn

Magnetic properties of Heusler alloys Ru2MnZ (Z=Si, Ge, Sn and Sb)

“…long range and have an oscillatory character at large distance [4,5]. However, these analyses also reveal that the exchange interactions between the nearest and next nearest neighbor, by which most of magnetic properties are determined, have the opposite sign to those expected from the RKKY-type interaction based on the free electron model, and Calori and Blandin type one.…”

Magnetic properties of Mn-rich Ni2MnSn Heusler alloys under pressure

“…Recently, Kurtulus et al [21] and Ş aş oglu et al [12] performed the studies of the electronic structures and exchange interaction parameters for Ni 2 MnSn using the tight-binding linear muffin-tin orbital (TB-LMTO) method within the atomic-sphere approximation (ASA) and the augmented spherical wave (ASW) method within ASA, respectively. Noda and Ishikawa investigated the exchange interactions in Ni 2 MnSn using neutron spin wave scattering [23]. The results were analyzed using a Heisenberg Hamiltonian where only Mn atoms have a localized moment.…”

Spin-dependent electron momentum density in theNi2MnSnHeusler alloy

“…[9][10][11] The formation and the coupling of magnetic moments in Mn-related Heusler alloys are still the subject of theoretical and experimental studies. From the early neutron spin wave scattering experiments performed on Ni 2 MnSn, Pd 2 MnSn, and Cu 2 MnAl samples [12][13][14] it was concluded that the 3d electrons are well localized on the Mn atoms and the interactions in the Heusler alloys are long range, extending to more than eight neighbors. The nearest-neighbor separation of Mn sites is such that there is considered to be negligible direct overlap of the d wave functions.…”