Giant intrinsic magnetoresistance in spin-filtered tunnel junctions with ferrimagnetic electrode

Lalrinkima,; Kastuar, Srihari Madhav; Zadeng, Lalthakimi; Zosiamliana, R.; Chettri, B.; Singh, Y. T.; Zuala, Lalhriat; P., D.; Ekuma, Chinedu

doi:10.1103/physrevb.107.155305

Cited by 4 publications

(2 citation statements)

References 62 publications

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“…The total magnetic moment of alloys can be predicted from their average valence electron numbers Nv according to the Slater-Pauling rule. The total magnetic moment in multiples of Bohr magnetons u B is given by [63,64]:…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Electronic structure and magnetic properties of Si doped AlFe₂Ge full-Heusler

Kadim,

Masrour

2024

Phys. Scr.

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Using the spin-polarized GGA combined with TB-mBJ approach and Monte Carlo program, we methodically explore the electronic and magnetic features of cubic Al1-xSixFe2Ge (x = 0, 0.25, 0.50, 0.75, and 1) compounds. The structural optimization in ferromagnetic and ferrimagnetic state proves that alloy AlFe2Ge is ferrimagnetic with optimized lattice constant of 3.6075Å. The elastic constants and related mechanical quantities such as bulk modulus B, Zener anisotropy factor A and Cauchy pressure Cp were calculated. The calculated total magnetic moment shows a slightly decreasing in their values on increasing Si substitution x. The results show that the studied compound has remarkable properties such as their high magnetic entropy at low temperature 40 J.Kg-1.K-1, metallicity and ferrimagnetism. Noting that ferrimagnetic compound is more suitable for spintronic devices than its ferromagnetic compound because of its lower leakage fields and favorable robustness of magnetism.

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Section: Magnetic Propertiesmentioning

confidence: 99%

Electronic structure and magnetic properties of Si doped AlFe₂Ge full-Heusler

Kadim,

Masrour

2024

Phys. Scr.

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“…Heusler compounds are one of the largest families of ternary inter-metallic compounds have been intensively studied due to their simple crystalline structure, owning to several industrial applications. Also, the presence of the unique electronic structure exhibiting half-metallicity, and a wide variety of properties such as magneto-calories, thermoelectric (TE), and magnetic shape memory effects, promising for the spintronic [2][3][4][5][6][7]. Through the surveyed literature, it was found that Heusler alloys (HA) were broadly divided into four components namely; direct full-HA that crystallizes in L2 1 structure, consisting of four inter-penetrating face centered cubic (FCC) lattices with space group-225 (Fm-3m), inverse full-HA crystallizes in C1 b type structure with space group-216 (F-43m), half-HA that belongs to C1 b type structure, consisting of three in-equivalent atoms forming inter-penetrating FCC sub-lattices, and Quaternary-HA (QHA) that fits in C1 b structure with four in-equivalent atoms [3,8,9].…”

Section: Introductionmentioning

confidence: 99%

First-principles investigation of the electronics, optical, mechanical, thermodynamics and thermoelectric properties of Na based Quaternary Heusler alloys (QHAs) NaHfXGe (X = Co, Rh, Ir)

Zosiamliana,

Kima,

Mawia

et al. 2023

J. Phys.: Condens. Matter

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In this study, we explored the electronic and thermoelectric properties of the Na-based Quaternary Heusler Alloys (QHAs) NaHfXGe (X=Co, Rh, Ir) using DFT. We performed the spin-polarized DFT calculations at the GGA level and conﬁrmed the ground state non-magnetic conﬁguration of NaHfXGe. The mechanical and thermodynamical stabilities are analyzed and discussed to validate the stability by calculating the elastic constant and phonon dispersion curve. A thorough investigation on the electronic properties are carried out by performing the GGA, GGA+U, and GGA+SOC formalism where we report the semi-conducting characteristic of NaHfCoGe and NaHfRhGe QHAs. However, NaHfIrGe is predicted to be a non-magnetic metal. From the calculated optical properties we found that the most active optical absorption occurs within the Vis-UV region with α>105 cm-1, therefore the studied QHAs are proposed to be a promising optoelectronic materials. The results of the thermodynamic properties have shown that NaHfXGe follows Debye’s low-temperature speciﬁc heat law and the classical thermodynamics of the Dulong-Petit law at high temperatures. The calculated thermoelectric eﬃciency using GGA+SOC formalism at T=1200 K are ZT 1.22 and 0.57 for NaHfCoGe and NaHfRhGe, suggesting that these materials are potential thermoelectric materials to operate at high temperature.

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Comparative study of magnetic stability, electronic, optical, thermoelectric and thermal properties of Co2FeSn and Fe2CoSn full Heusler alloys from first principles approch

Raïâ,

Masrour,

Rezzouk

et al. 2024

Computational Condensed Matter

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Giant intrinsic magnetoresistance in spin-filtered tunnel junctions with ferrimagnetic electrode

Cited by 4 publications

References 62 publications

Electronic structure and magnetic properties of Si doped AlFe₂Ge full-Heusler

Electronic structure and magnetic properties of Si doped AlFe₂Ge full-Heusler

First-principles investigation of the electronics, optical, mechanical, thermodynamics and thermoelectric properties of Na based Quaternary Heusler alloys (QHAs) NaHfXGe (X = Co, Rh, Ir)

Comparative study of magnetic stability, electronic, optical, thermoelectric and thermal properties of Co2FeSn and Fe2CoSn full Heusler alloys from first principles approch

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Giant intrinsic magnetoresistance in spin-filtered tunnel junctions with ferrimagnetic electrode

Cited by 4 publications

References 62 publications

Electronic structure and magnetic properties of Si doped AlFe2Ge full-Heusler

Electronic structure and magnetic properties of Si doped AlFe2Ge full-Heusler

First-principles investigation of the electronics, optical, mechanical, thermodynamics and thermoelectric properties of Na based Quaternary Heusler alloys (QHAs) NaHfXGe (X = Co, Rh, Ir)

Comparative study of magnetic stability, electronic, optical, thermoelectric and thermal properties of Co2FeSn and Fe2CoSn full Heusler alloys from first principles approch

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Electronic structure and magnetic properties of Si doped AlFe₂Ge full-Heusler

Electronic structure and magnetic properties of Si doped AlFe₂Ge full-Heusler