Journal ArticleDOI
Complex Magnetic Behavior of the Heusler Alloy—Cu 2 Mn 0.75 Fe 0.25 Al
TLDR
In this paper, the structural and magnetic properties of alloys were investigated, and the magnetic isotherms were fitted to modified Langevin equation which indicated the presence of clusters with large magnetic moment.Abstract:
We investigated the structural and magnetic properties of Cu
2
Mn
1-x
Fe
x
Al (x = 0.25, 0.5, 0.75) alloys. Among the three compositions, only x = 0.25 composition crystallizes in single phase with L2
1
structure but its magnetic response indicates a complex magnetic structure. The magnetic isotherms were fitted to modified Langevin equation which indicates the presence of clusters with large magnetic moment. The ac susceptibility studies showed the presence of a superparamagnetic phase in the system over and above ferromagnetic order. To determine the nature of the interactions among the clusters, the variation of freezing temperature (T
f
) with applied ac frequency was analyzed using different models (Neel-Arrhenius, Vogel-Fulcher, and critical slowing down model).read more
Citations
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Coexistence of cluster ferromagnetism and cluster spin-glass like behaviour in melt-quenched Cu2Mn0.5Fe0.5Al Heusler alloy
TL;DR: In this article, the structural stability and magnetic properties of the melt-quenched Heusler alloy-Cu2Mn0.5Al were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), dc magnetization and ac susceptibility measurements respectively.
Posted Content
Exotic magnetic behaviour and evidence of cluster glass and Griffiths like phase in Heusler alloys Fe2-xMnxCrAl
TL;DR: A detailed study of structural, magnetic and thermodynamic properties of a series of Heusler alloys Fe2-xMnxCrAl (x=0, 0.25 and 0.75 and 1) was carried out using high resolution synchrotron X-ray diffraction as mentioned in this paper.
Journal ArticleDOI
Griffiths phase and spontaneous magnetization in polycrystalline Co50V34Ga16 alloy
Yuetong Qian,Meng Wu,Litao Yu,Hongwei Liu,Xiaodong Si,Xiaojing Luo,Zhe Li,Chuanbing Cai,Yongsheng Liu,Yongsheng Liu +9 more
TL;DR: In this paper, the Griffiths phase was found in Co-V-Ga alloy for the first time using the DSC curve and the inverse DC susceptibility (χ−1) in the high temperature region.
Journal ArticleDOI
Effect of partial substitution of iso-valent Mo at Cr-site on electronic structure and physical properties of Fe2CrAl
Kavita Yadav,K. Mukherjee +1 more
TL;DR: In this article, the effect of partial substitution of Mo at Cr-site on physical properties of Fe2CrAl was investigated and structural and morphological analysis confirmed the single phase cubic structure of the substituted alloys.
Journal ArticleDOI
Structural, Electronic and Magnetic Properties of the Heusler Alloy Mn 2 VIn: A Combined DFT and Experimental Study
TL;DR: In this paper, the structural, electronic and magnetic properties of the Heusler alloy Mn2VIn have been investigated using the density functional theory and experimental techniques, and the structural properties were determined using X-ray diffraction, revealing the presence of cubic and tetragonal phases in the sample.
References
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Journal ArticleDOI
New Class of Materials: Half-Metallic Ferromagnets
TL;DR: The band structure of Mn-based Heusler alloys of the crystal structure (MgAgAs type) has been calculated with the augmented-spherical-wave method.
Journal ArticleDOI
Formation and coupling of magnetic moments in Heusler alloys
TL;DR: In this article, the microscopic mechanisms responsible for both the formation and coupling of magnetic moments in Heusler alloys were identified, and it was shown that the $X$ atoms (e.g., Cu, Pd) serve primarily to determine the lattice constant, while the $Y$ atoms mediate the interaction between the $\mathrm{Mn}d$ states.
Journal ArticleDOI
Magnetic properties and large magnetic-field-induced strains in off-stoichiometric Ni–Mn–Al Heusler alloys
TL;DR: In this article, magnetic properties and magnetic-field-induced strains (MFIS) have been investigated for off-stoichiometric Ni-Mn-Al Heusler alloys with an ordered L21 structure.
Journal ArticleDOI
Heusler Compounds—A Material Class With Exceptional Properties
TL;DR: An overview of Heusler compounds, focusing on their structure, properties, and potential applications, can be found in this article, with a focus on the X2YZ compound.