Ferromagnetism in magnesium chloride monolayer with an unusually large spin-up gap

Gargee Bhattacharyya, Indrani Choudhuri, Preeti Bhauriyal, Priyanka Garg, Biswarup Pathak

Research output: Contribution to journalReview article

3 Citations (Scopus)

Abstract

The primary research target of the rapidly evolving spintronic industry is to design highly efficient novel materials that consume very low power and operate with high speed. Main group based ferromagnetic half-metallic materials are very promising due to their long spin-relaxation time. In recent years, the discovery of superconducting state with high critical temperature in a magnesium based system (MgB2) invigorated researchers due to its simple crystal structure and intriguing results, leading to its use as a good material for large scale application in electronic devices. Here, we report ferromagnetism and strong half-metallicity in another Mg-based system, which can be a promising material for spintronics based devices rather than for electronic devices (such as MgB2). Based on the first principle calculations, we report here a series of magnetic half-metallic magnesium chloride based monolayers [Mg0.89δ0.11Cl2, Mg0.78δ0.22Cl2, and Mg0.67δ0.33Cl2 (MgCl3)]. This MgCl3 phase has a similar pattern as that in CrI3, which has drawn remarkable attention worldwide as the first intrinsic 2D magnet. These magnesium chloride monolayer based systems are 100% spin-polarized, and promising for scattering-less transport due to strong half-metallicity and large spin-up gap (∼6.135-6.431 eV). The unusually large spin-up gap in our proposed system may shield spin current leakage even in nanoscale device. Further investigation explores a ferromagnetic ordering in Mg0.89δ0.11Cl2 with a Curie temperature of 250 K, which makes the system viable for operation at temperatures slightly lower than the room temperature. High magnetic anisotropy energy (MAE) in Mg0.89δ0.11Cl2 (452.84 μeV) indicates that the energy required to flip the spin is high, and therefore inhibits spin fluctuation. These results suggest a promising way to discover MgCl2-based 2D spin valves, GMR, TMR and other spintronics devices.

Original languageEnglish (US)
Pages (from-to)22280-22292
Number of pages13
JournalNanoscale
Volume10
Issue number47
DOIs
StatePublished - Dec 21 2018

Fingerprint

Magnesium Chloride
Ferromagnetism
Magnetoelectronics
Magnesium
Monolayers
Spin fluctuations
Magnetic anisotropy
Curie temperature
Leakage currents
Relaxation time
Temperature
Magnets
Crystal structure
Scattering
Industry

PubMed: MeSH publication types

  • Journal Article

Cite this

Ferromagnetism in magnesium chloride monolayer with an unusually large spin-up gap. / Bhattacharyya, Gargee; Choudhuri, Indrani; Bhauriyal, Preeti; Garg, Priyanka; Pathak, Biswarup.

In: Nanoscale, Vol. 10, No. 47, 21.12.2018, p. 22280-22292.

Research output: Contribution to journalReview article

Bhattacharyya, G, Choudhuri, I, Bhauriyal, P, Garg, P & Pathak, B 2018, 'Ferromagnetism in magnesium chloride monolayer with an unusually large spin-up gap', Nanoscale, vol. 10, no. 47, pp. 22280-22292. https://doi.org/10.1039/c8nr07429a
Bhattacharyya, Gargee ; Choudhuri, Indrani ; Bhauriyal, Preeti ; Garg, Priyanka ; Pathak, Biswarup. / Ferromagnetism in magnesium chloride monolayer with an unusually large spin-up gap. In: Nanoscale. 2018 ; Vol. 10, No. 47. pp. 22280-22292.
@article{5913ce8a4f22417cbe8247103f5a374c,
title = "Ferromagnetism in magnesium chloride monolayer with an unusually large spin-up gap",
abstract = "The primary research target of the rapidly evolving spintronic industry is to design highly efficient novel materials that consume very low power and operate with high speed. Main group based ferromagnetic half-metallic materials are very promising due to their long spin-relaxation time. In recent years, the discovery of superconducting state with high critical temperature in a magnesium based system (MgB2) invigorated researchers due to its simple crystal structure and intriguing results, leading to its use as a good material for large scale application in electronic devices. Here, we report ferromagnetism and strong half-metallicity in another Mg-based system, which can be a promising material for spintronics based devices rather than for electronic devices (such as MgB2). Based on the first principle calculations, we report here a series of magnetic half-metallic magnesium chloride based monolayers [Mg0.89δ0.11Cl2, Mg0.78δ0.22Cl2, and Mg0.67δ0.33Cl2 (MgCl3)]. This MgCl3 phase has a similar pattern as that in CrI3, which has drawn remarkable attention worldwide as the first intrinsic 2D magnet. These magnesium chloride monolayer based systems are 100{\%} spin-polarized, and promising for scattering-less transport due to strong half-metallicity and large spin-up gap (∼6.135-6.431 eV). The unusually large spin-up gap in our proposed system may shield spin current leakage even in nanoscale device. Further investigation explores a ferromagnetic ordering in Mg0.89δ0.11Cl2 with a Curie temperature of 250 K, which makes the system viable for operation at temperatures slightly lower than the room temperature. High magnetic anisotropy energy (MAE) in Mg0.89δ0.11Cl2 (452.84 μeV) indicates that the energy required to flip the spin is high, and therefore inhibits spin fluctuation. These results suggest a promising way to discover MgCl2-based 2D spin valves, GMR, TMR and other spintronics devices.",
author = "Gargee Bhattacharyya and Indrani Choudhuri and Preeti Bhauriyal and Priyanka Garg and Biswarup Pathak",
year = "2018",
month = "12",
day = "21",
doi = "10.1039/c8nr07429a",
language = "English (US)",
volume = "10",
pages = "22280--22292",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "47",

}

TY - JOUR

T1 - Ferromagnetism in magnesium chloride monolayer with an unusually large spin-up gap

AU - Bhattacharyya, Gargee

AU - Choudhuri, Indrani

AU - Bhauriyal, Preeti

AU - Garg, Priyanka

AU - Pathak, Biswarup

PY - 2018/12/21

Y1 - 2018/12/21

N2 - The primary research target of the rapidly evolving spintronic industry is to design highly efficient novel materials that consume very low power and operate with high speed. Main group based ferromagnetic half-metallic materials are very promising due to their long spin-relaxation time. In recent years, the discovery of superconducting state with high critical temperature in a magnesium based system (MgB2) invigorated researchers due to its simple crystal structure and intriguing results, leading to its use as a good material for large scale application in electronic devices. Here, we report ferromagnetism and strong half-metallicity in another Mg-based system, which can be a promising material for spintronics based devices rather than for electronic devices (such as MgB2). Based on the first principle calculations, we report here a series of magnetic half-metallic magnesium chloride based monolayers [Mg0.89δ0.11Cl2, Mg0.78δ0.22Cl2, and Mg0.67δ0.33Cl2 (MgCl3)]. This MgCl3 phase has a similar pattern as that in CrI3, which has drawn remarkable attention worldwide as the first intrinsic 2D magnet. These magnesium chloride monolayer based systems are 100% spin-polarized, and promising for scattering-less transport due to strong half-metallicity and large spin-up gap (∼6.135-6.431 eV). The unusually large spin-up gap in our proposed system may shield spin current leakage even in nanoscale device. Further investigation explores a ferromagnetic ordering in Mg0.89δ0.11Cl2 with a Curie temperature of 250 K, which makes the system viable for operation at temperatures slightly lower than the room temperature. High magnetic anisotropy energy (MAE) in Mg0.89δ0.11Cl2 (452.84 μeV) indicates that the energy required to flip the spin is high, and therefore inhibits spin fluctuation. These results suggest a promising way to discover MgCl2-based 2D spin valves, GMR, TMR and other spintronics devices.

AB - The primary research target of the rapidly evolving spintronic industry is to design highly efficient novel materials that consume very low power and operate with high speed. Main group based ferromagnetic half-metallic materials are very promising due to their long spin-relaxation time. In recent years, the discovery of superconducting state with high critical temperature in a magnesium based system (MgB2) invigorated researchers due to its simple crystal structure and intriguing results, leading to its use as a good material for large scale application in electronic devices. Here, we report ferromagnetism and strong half-metallicity in another Mg-based system, which can be a promising material for spintronics based devices rather than for electronic devices (such as MgB2). Based on the first principle calculations, we report here a series of magnetic half-metallic magnesium chloride based monolayers [Mg0.89δ0.11Cl2, Mg0.78δ0.22Cl2, and Mg0.67δ0.33Cl2 (MgCl3)]. This MgCl3 phase has a similar pattern as that in CrI3, which has drawn remarkable attention worldwide as the first intrinsic 2D magnet. These magnesium chloride monolayer based systems are 100% spin-polarized, and promising for scattering-less transport due to strong half-metallicity and large spin-up gap (∼6.135-6.431 eV). The unusually large spin-up gap in our proposed system may shield spin current leakage even in nanoscale device. Further investigation explores a ferromagnetic ordering in Mg0.89δ0.11Cl2 with a Curie temperature of 250 K, which makes the system viable for operation at temperatures slightly lower than the room temperature. High magnetic anisotropy energy (MAE) in Mg0.89δ0.11Cl2 (452.84 μeV) indicates that the energy required to flip the spin is high, and therefore inhibits spin fluctuation. These results suggest a promising way to discover MgCl2-based 2D spin valves, GMR, TMR and other spintronics devices.

UR - http://www.scopus.com/inward/record.url?scp=85058373032&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85058373032&partnerID=8YFLogxK

U2 - 10.1039/c8nr07429a

DO - 10.1039/c8nr07429a

M3 - Review article

C2 - 30465686

AN - SCOPUS:85058373032

VL - 10

SP - 22280

EP - 22292

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 47

ER -