MnX (X = P, As) monolayers: a new type of two-dimensional intrinsic room temperature ferromagnetic half-metallic material with large magnetic anisotropy

Nanoscale ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 4204-4209 ◽  
Author(s):  
Bing Wang ◽  
Yehui Zhang ◽  
Liang Ma ◽  
Qisheng Wu ◽  
Yilv Guo ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Room Temperature ◽  
Two Dimensional ◽  
Half Metallicity ◽  
Metallic Material ◽  
Half Metallic ◽  
New Type

MnX (X = P, As) monolayers: room-temperature ferromagnetic half-metallicity and sizable magnetic anisotropy.

High Curie temperature and half-metallicity in an atomically thin main group-based boron phosphide system: long range ferromagnetism

2018 ◽  
Vol 20 (35) ◽  
pp. 22877-22889 ◽  
Author(s):  
Gargee Bhattacharyya ◽  
Indrani Choudhuri ◽  
Biswarup Pathak
Keyword(s):  
Curie Temperature ◽  
Long Range ◽  
Main Group ◽  
High Curie Temperature ◽  
Half Metallicity ◽  
Metallic Material ◽  
Half Metallic ◽  
Boron Phosphide

In this work, we have designed a main group-based novel ferromagnetic half-metallic material with a high Curie temperature for spintronics.

A tetragonal phase Mn2B2 sheet: a stable room temperature ferromagnet with sizable magnetic anisotropy

2020 ◽  
Vol 22 (19) ◽  
pp. 10893-10899 ◽  
Author(s):  
Yusuf Zuntu Abdullahi ◽  
Zeynep Demir Vatansever ◽  
Ethem Aktürk ◽  
Ümit Akıncı ◽  
Olcay Üzengi Aktürk
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Tetragonal Phase ◽  
Room Temperature ◽  
Electronic Devices ◽  
Two Dimensional ◽  
Metal Boride

Exploring the magnetic properties of two-dimensional (2D) metal boride (MBene) sheets for spin-based electronics is gaining importance for developing electronic devices.

scholarly journals Prediction of room-temperature half-metallicity in layered halide double perovskites

2019 ◽  
Vol 5 (1) ◽  
Author(s):  
Jian Xu ◽  
Changsong Xu ◽  
Jian-Bo Liu ◽  
Laurent Bellaiche ◽  
Hongjun Xiang ◽  
...  
Keyword(s):  
Room Temperature ◽  
High Efficiency ◽  
Double Perovskites ◽  
Nanoscale Device ◽  
Half Metallicity ◽  
Thermal Stabilities ◽  
Half Metallic ◽  
Large Bulk ◽  
Device Applications ◽  
Ferromagnetic Ordering

AbstractHalf-metallic ferromagnets (HMFs) that possess intriguing physical properties with completely spin-polarized current are key candidates for high-efficiency spintronic devices. However, HMFs that could simultaneously have high Curie temperature (Tc), wide half-metallic gap (ΔHM), and large bulk magnetocrystalline anisotropy energy (MAE) are very rare, which significantly restrict their room-temperature (RT) applications. In this article, through materials screening in layered halide double perovskites (LHDPs), we have theoretically identified that Cs4FePb2Cl12, which has good crystallographic, dynamic and thermal stabilities, possesses an intrinsic half-metallic ground-state with a high Tc ~ 450 K. Interestingly, the long-range ferromagnetic ordering in bulk Cs4FePb2Cl12 is contributed by the strong super-superexchange interactions between the neighboring Fe d orbitals mediated by different anionic Cl p orbitals. The high Tc of layered Cs4FePb2Cl12 can be well maintained even in the monolayer limitation, i.e., Tc ~ 370 K for Cs4FePb2Cl12 monolayer, which is critical for nanoscale device applications. Moreover, both bulk and monolayer Cs4FePb2Cl12 can exhibit wide ΔHM ~ 0.55 eV and large MAE >320 μeV/Fe, comparable to that of the best HMFs reported in the literature. Our findings can significantly extend the potentials of LHDPs for high-temperature spintronic applications.

Domain Structures in Films with Combined Magnetic Anisotropy. Two-Dimensional Simulation

2014 ◽  
Vol 215 ◽  
pp. 409-414 ◽  
Author(s):  
Mikhail N. Dubovik ◽  
Vladimir V. Zverev ◽  
Boris N. Filippov
Keyword(s):  
Magnetic Anisotropy ◽  
Thick Film ◽  
Domain Structure ◽  
Uniaxial Anisotropy ◽  
Anisotropy Constant ◽  
Two Dimensional ◽  
Structure Dependence ◽  
Domain Structures ◽  
New Type ◽  
Dimensional Simulation

The domain structure dependence on the uniaxial anisotropy constant has been considered in a micrometer-thick film by means of the two-dimensional micromagnetic simulation. The film has both uniaxial and tetra-axial magnetic anisotropies. The new type domain structures and walls caused by the tetra-axial anisotropy presence are predicted.

Magnetic proximity effect induced spin-dependent electronic structure in two-dimensional SnO by half-metallic monolayer CrN ferromagnet

2019 ◽  
Vol 21 (13) ◽  
pp. 6984-6990 ◽  
Author(s):  
Kai Nie ◽  
Xiaocha Wang ◽  
Wenbo Mi
Keyword(s):  
Electronic Structure ◽  
Magnetic Anisotropy ◽  
Proximity Effect ◽  
Two Dimensional ◽  
Half Metallic ◽  
Magnetic Proximity Effect

The electronic structure and magnetic anisotropy of a 2D SnO/CrN heterostructure can be tailored by strains and interlayer distances.

New two-dimensional Mn-based MXenes with room-temperature ferromagnetism and half-metallicity

2016 ◽  
Vol 4 (47) ◽  
pp. 11143-11149 ◽  
Author(s):  
Junjie He ◽  
Pengbo Lyu ◽  
Petr Nachtigall
Keyword(s):  
Magnetic Properties ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Two Dimensional ◽  
Computational Investigation ◽  
Half Metallicity

Magnetic properties of Mn2CT2 (T = F, Cl, OH, O, and H) MXenes are reported based on a computational investigation.

scholarly journals Electronic phase-crossover and room temperature ferromagnetism in a two-dimensional (2D) spin lattice

RSC Advances ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 946-952
Author(s):  
A. K. Nair ◽  
S. J. Ray
Keyword(s):  
High Temperature ◽  
Curie Temperature ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Magnetic Ordering ◽  
Metallic State ◽  
Two Dimensional ◽  
Half Metallic ◽  
Spin Lattice ◽  
Electronic Phase

In the presence of strain, high temperature magnetic ordering in Cr2Ge2Te6 was observed with electronic phase crossover from semiconducting to half-metallic state. On coupling strain and electric field, the Curie temperature reaches 331 K.

scholarly journals Anomalous transport properties of the half-metallic ferromagnets Co 2 TiSi, Co 2 TiGe and Co 2 TiSn

2011 ◽  
Vol 369 (1951) ◽  
pp. 3588-3601 ◽  
Author(s):  
Joachim Barth ◽  
Gerhard H. Fecher ◽  
Benjamin Balke ◽  
Tanja Graf ◽  
Andrey Shkabko ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Room Temperature ◽  
Magnetic Moments ◽  
Experimental Investigations ◽  
Half Metallicity ◽  
Half Metallic ◽  
Seebeck Coefficients ◽  
Metallic Ferromagnetism ◽  
Half Metallic Ferromagnetism ◽  
Curie Temperatures

In this work, the theoretical and experimental investigations of Co 2 Ti Z ( Z =Si, Ge or Sn) compounds are reported. Half-metallic ferromagnetism is predicted for all three compounds with only two bands crossing the Fermi energy in the majority channel. The magnetic moments fulfil the Slater–Pauling rule and the Curie temperatures are well above room temperature. All compounds show a metallic-like resistivity for low temperatures up to their Curie temperature, above the resistivity changes to semiconducting-like behaviour. A large negative magnetoresistance (MR) of 55 per cent is observed for Co 2 TiSn at room temperature in an applied magnetic field of μ 0 H =4 T , which is comparable to the large negative MRs of the manganites. The Seebeck coefficients are negative for all three compounds and reach their maximum values at their respective Curie temperatures and stay almost constant up to 950 K. The highest value achieved is −52 μVK −1 for Co 2 TiSn, which is large for a metal. The combination of half-metallicity and the constant large Seebeck coefficient over a wide temperature range makes these compounds interesting materials for thermoelectric applications and further spincaloric investigations.

Two-dimensional stable Mn based half metal and antiferromagnets promising for spintronics

Nanoscale ◽  
2020 ◽  
Vol 12 (23) ◽  
pp. 12490-12496 ◽  
Author(s):  
Bingwen Zhang ◽  
Guang Song ◽  
Jie Sun ◽  
Jiancai Leng ◽  
Cheng Zhang ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Band Structure ◽  
Monte Carlo Simulations ◽  
Room Temperature ◽  
Mechanical Stability ◽  
Two Dimensional ◽  
Half Metallic ◽  
Half Metal ◽  
Band Structure Calculations ◽  
Structure Calculations

By phonon band structure calculations and Monte Carlo simulations, we propose that 2D MnSi and MnC0.5Si0.5 monolayers could exhibit mechanical stability and room temperature half-metallic properties.

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