Experimental studies into the forced magnetostriction, magnetization, and temperature dependence of permeability in NiMnIn and NiMnSn ferromagnetic Heusler alloys were performed according to the spin fluctuation theory of itinerant ferromagnetism proposed by Takahashi. We investigated the magnetic field () dependence of magnetization () at the Curie temperature , and at = 4.2 K, which concerns the ground state of the ferromagnetic state.
View Article and Find Full Text PDFIn this article, we review the magnetostriction and magneto-volume effects of NiMnGa-type ferromagnetic Heusler alloys at the martensitic, premartensitic, and austenitic phases. The correlations of forced magnetostriction (ΔV/V) and magnetization (), using the self-consistent renormalization (SCR) spin fluctuation theory of an itinerant electron ferromagnet proposed by Takahashi, are evaluated for the ferromagnetic Heusler alloys. The magneto-volume effect occurs due to the interaction between the magnetism and volume change of the magnetic crystals.
View Article and Find Full Text PDFThe magnetization, electric resistivity, and magnetoresistance properties of Pd 2 Mn 1 . 4 Sn 0 . 6 Heusler alloys were investigated.
View Article and Find Full Text PDFExperimental investigations into the field dependence of magnetization and temperature dependences of magnetic susceptibility in NiMnGa ( = 0.00, 0.02, 0.
View Article and Find Full Text PDFExperimental investigations into the field dependence of magnetization and the relationship between magnetization and magnetostriction in NiMnGa (x = 0.00, 0.02, 0.
View Article and Find Full Text PDFWe have unravelled the electronic structure of a class of metamagnetic shape memory alloy Ni2Mn1+x In1-x by combining bulk-sensitive hard x-ray photoelectron spectroscopy and first-principles density-functional calculations. A sharp drop in the Ni 3d e(g) density of states forming a pseudogap in the martensitic phase transition (MPT) for x = 0.36 has been observed near the Fermi level.
View Article and Find Full Text PDFThermal strain, permeability, and magnetization measurements of the ferromagnetic shape memory alloys NiMnGa ( = 2.0, 2.5, 2.
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