Electronic, elastic and X-ray spectroscopic properties of direct and inverse full Heusler compounds Co2FeAl and Fe2CoAl, promising materials for spintronic applications: a DFT+U approach

2018 ◽  
Vol 6 (38) ◽  
pp. 10341-10349 ◽  
Author(s):  
Lalrinkima Siakeng ◽  
Gennady M. Mikhailov ◽  
D. P. Rai
Keyword(s):  
Heusler Alloys ◽  
Spectroscopic Properties ◽  
Heusler Compounds ◽  
Half Metallicity ◽  
X Ray ◽  
Magnetic Damping ◽  
Full Heusler ◽  
Full Heusler Alloys ◽  
Curie Temperatures

Half-metallicity, low magnetic damping and high Curie temperatures (TC) are crucial for application in spintronics and full Heusler alloys are promising in this regard.

Ab initio predictions of stability, half-metallicity and magnetism in Co2NbAl and Co2ZrAl full-Heusler alloys

Vacuum ◽  
2021 ◽  
pp. 110418
Author(s):  
Yutong Li ◽  
Jingchuan Zhu ◽  
Ramesh Paudel ◽  
Jingtao Huang ◽  
Fei Zhou
Keyword(s):  
Ab Initio ◽  
Heusler Alloys ◽  
Half Metallicity ◽  
Full Heusler ◽  
Full Heusler Alloys

Stable half-metallicity in the (001)-oriented thin films of Co-doped full-Heusler alloys Ti2Fe1−x Co x Sn (x=0.00, 0.25, 0.50, 0.75 or 1.00)

2020 ◽  
Vol 32 (32) ◽  
pp. 325001
Author(s):  
Iltaf Muhammad ◽  
Jian-Min Zhang ◽  
Anwar Ali ◽  
Muhammad Mushtaq ◽  
Suleman Muhammad
Keyword(s):  
Thin Films ◽  
Heusler Alloys ◽  
Half Metallicity ◽  
Full Heusler ◽  
Full Heusler Alloys ◽  
Co Doped

scholarly journals Effect of doping and disorder on the half metallicity of full Heusler alloys

2006 ◽  
Vol 89 (4) ◽  
pp. 042502 ◽  
Author(s):  
I. Galanakis ◽  
K. Özdoğan ◽  
B. Aktaş ◽  
E. Şaşıoğlu
Keyword(s):  
Heusler Alloys ◽  
Half Metallicity ◽  
Full Heusler ◽  
Full Heusler Alloys ◽  
Effect Of Doping

scholarly journals High spin mixing conductance and spin interface transparency at the interface of a Co2Fe0.4Mn0.6Si Heusler alloy and Pt

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Braj Bhusan Singh ◽  
Koustuv Roy ◽  
Pushpendra Gupta ◽  
Takeshi Seki ◽  
Koki Takanashi ◽  
...  
Keyword(s):  
High Spin ◽  
Heusler Alloys ◽  
Hall Voltage ◽  
Spin Pumping ◽  
Magnetic Damping ◽  
Spin Polarized ◽  
Inverse Spin Hall Effect ◽  
Interface Transparency ◽  
Full Heusler ◽  
Full Heusler Alloys

AbstractFerromagnetic materials exhibiting low magnetic damping (α) and moderately high-saturation magnetization are required from the viewpoints of generation, transmission, and detection of spin waves. Since spin-to-charge conversion efficiency is another important parameter, high spin mixing conductance $$({g_{r}^{\uparrow \downarrow}})$$ ( g r ↑ ↓ ) is the key for efficient spin-to-charge conversion. Full Heusler alloys, e.g., Co2Fe0.4Mn0.6Si (CFMS), which are predicted to be 100% spin-polarized, exhibit low α. However, $$g_r^{ \uparrow \downarrow }$$ g r ↑ ↓ at the interface between CFMS and a paramagnet is not fully understood. Here, we report investigations of spin pumping and the inverse spin Hall effect in CFMS/Pt bilayers. Damping analysis indicates the presence of significant spin pumping at the interface of CFMS and Pt, which is also confirmed by the detection of an inverse spin Hall voltage. We show that in CFMS/Pt, $$g_r^{ \uparrow \downarrow }$$ g r ↑ ↓ (1.70 × 1020 m−2) and the interface transparency (83%) are higher than the values reported for other ferromagnetic/heavy metal systems. We observed a spin Hall angle of ~0.026 for the CFMS/Pt bilayer system.

scholarly journals Half-metallicity in new Heusler alloys Mn2ScZ (Z = Si, Ge, Sn)

RSC Advances ◽  
2020 ◽  
Vol 10 (13) ◽  
pp. 7661-7670 ◽  
Author(s):  
Mahesh Ram ◽  
Atul Saxena ◽  
Abeer E. Aly ◽  
Amit Shankar
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Correction Term ◽  
Heusler Alloys ◽  
Half Metallicity ◽  
Functional Theory ◽  
Full Heusler ◽  
Full Heusler Alloys

Study of half-metallicity has been performed in a new series of Mn2ScZ (Z = Si, Ge and Sn) full Heusler alloys using density functional theory with the calculation and implementation of a Hubbard correction term (U).

scholarly journals Electronic and Vibrational Properties of Fe2NiAl and Co2NiAl Full Heusler Alloys: A First-Principles Comparison

2021 ◽  
Author(s):  
Olga Miroshkina ◽  
Vladimir Sokolovskiy ◽  
Vasiliy Buchelnikov ◽  
Markus Gruner
Keyword(s):  
Ground State ◽  
First Principles ◽  
Low Temperatures ◽  
Permanent Magnets ◽  
Heusler Alloys ◽  
Heusler Compounds ◽  
Cubic Lattice ◽  
Full Heusler ◽  
Full Heusler Alloys ◽  
Vibrational Density

<p>In this work, we report on a systematic first-principles study of the structural, electronic, vibrational and thermodynamic properties of the cubic Fe<sub>2</sub>NiAl and tetragonally distorted Co<sub>2</sub>NiAl full Heusler compounds. We discuss systematically the competition between the inverse Heusler structure and a T<i><sup>p</sup></i>-type layered atomic ordering formed by the alternating planes of (Fe,Co) and Ni atoms in terms of the electronic and vibrational density of states.</p> <p>Such an arrangement is predicted to be the ground state of Fe<sub>2</sub>NiAl. For Co<sub>2</sub>NiAl, layered ordering has slightly higher energy in comparison with the inverse one, however, we show that it might be stabilized at rather low temperatures.</p> <p> </p> <p>Due to the broken symmetry, layered T<i><sup>p</sup></i>-Fe<sub>2</sub>NiAl possesses a large MAE of the same order as tetrataenite FeNi - even in a phase with cubic lattice parameters, which makes a T<i><sup>p</sup></i>-type layered order an interesting feature for rare-earth free permanent magnets in Heusler-type compounds.</p>

scholarly journals Electronic and Vibrational Properties of Fe2NiAl and Co2NiAl Full Heusler Alloys: A First-Principles Comparison

2021 ◽  
Author(s):  
Olga Miroshkina ◽  
Vladimir Sokolovskiy ◽  
Vasiliy Buchelnikov ◽  
Markus Gruner
Keyword(s):  
Ground State ◽  
First Principles ◽  
Low Temperatures ◽  
Permanent Magnets ◽  
Heusler Alloys ◽  
Heusler Compounds ◽  
Cubic Lattice ◽  
Full Heusler ◽  
Full Heusler Alloys ◽  
Vibrational Density

<p>In this work, we report on a systematic first-principles study of the structural, electronic, vibrational and thermodynamic properties of the cubic Fe<sub>2</sub>NiAl and tetragonally distorted Co<sub>2</sub>NiAl full Heusler compounds. We discuss systematically the competition between the inverse Heusler structure and a T<i><sup>p</sup></i>-type layered atomic ordering formed by the alternating planes of (Fe,Co) and Ni atoms in terms of the electronic and vibrational density of states.</p> <p>Such an arrangement is predicted to be the ground state of Fe<sub>2</sub>NiAl. For Co<sub>2</sub>NiAl, layered ordering has slightly higher energy in comparison with the inverse one, however, we show that it might be stabilized at rather low temperatures.</p> <p> </p> <p>Due to the broken symmetry, layered T<i><sup>p</sup></i>-Fe<sub>2</sub>NiAl possesses a large MAE of the same order as tetrataenite FeNi - even in a phase with cubic lattice parameters, which makes a T<i><sup>p</sup></i>-type layered order an interesting feature for rare-earth free permanent magnets in Heusler-type compounds.</p>

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