XAFS study of local atomic environment in well- and ill-ordered transition metal sulfides MxTS2 (T=Mo, Nb, Ta) derived from TS2 intercalates

Slovokhotov, Yu.L.; Zubavichus, Ya. V.; Golub, A. S.; Novikov, Yu. N.; Akselrud, Lev; Kulikov, L.M.; Semenov-Kobzar', A. A.

doi:10.1016/s0168-9002(01)01082-8

Cited by 4 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar principles can be applied to other layered systems like Bi 2 Se 3 for inducing 2D multiferroics via intercalations, in which superconductive or topological properties can also be combined. The intercalated metal ions of Ni x MoS 2 and Cu x Bi 2 Se 3 did not form into clusters in previous experiments due to Coulomb repulsion between intercalated ions . As a result, a general approach is proposed to selectively induce multiferroicity by doping in certain regions of high‐mobility 2D semiconductors, which can be directly integrated in wafer like n / p doping channels.…”

Section: Resultsmentioning

confidence: 95%

“…To determine the ground state of TM‐intercalated MoS 2 bilayer based on previously synthesized M x MoS 2 , we compare the energies of various possible configures. The bilayer can be either AA or AB stacking, and intercalated TM ions can be either bi‐, tetra‐, or hex‐coordinate.…”

Section: Resultsmentioning

confidence: 99%

“…In this work we propose a general approach to obtain diluted FE/multiferroic 2D semiconductors by TM doping. Our first‐principles designs are based on previous experimental synthesis of intercalated metal dichalcogenides TX 2 such as M x MoS 2 (M = Ni, Cu, Ag, Cd), (Ni, Cr) 0.33 TS 2 (T = Nb, Ta), and Cu x Bi 2 Se 3 , holding various “guest” species of atomic thickness in their interlayer space. The adopted methods include traditionally melt growth and chemical interaction method as well as electrochemical intercalation method developed recently, which can efficaciously regulate the concentration of metal ions into layered.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

2D Diluted Multiferroic Semiconductors upon Intercalation

2019

Adv Elect Materials

View full text Add to dashboard Cite

Recently, coexistence of FE and other ferrocity in several 2D systems has been theoretically proposed. [3][4][5][6][7][8][9][10][11][12][13][14] 2D materials such as graphene, [15] phosphorene [16] and MoS 2 [17] with atomicthickness and high electron-mobility may render a high density for integration and high speed for operation. Especially, a recent study demonstrated that highly uniform, solution-processable, phasepure MoS 2 nanosheets can be prepared by electrochemical intercalation, rendering scalable fabrication of large-area 2D transistor array. [18] Their epitaxial growth on substrate also allows of lattice mismatch at the van der Waals interface, facilitating their combination with semiconductor circuits. For traditional FeRAM and MRAM, their combinations with semiconductor circuits remain to be a challenge. Most robust FM materials are metallic, while traditional FE like pervoskites are wide-gap insulators with poor electron-mobility, and their epitaxial growth on silicon is hindered by the issue of lattice mismatch. FM semiconductors may be obtained by doping 3d transitionmetal (TM) ions in III-V compounds (diluted magnetic semiconductors), [19,20] while diluted FE semiconductors have not been realized by similar doping. It would be highly desirable if FE/multiferroicity can be induced by doping a semiconductor in certain domains, which can be directly integrated in the wafer like n/p doping channels. [21,22] In this work we propose a general approach to obtain diluted FE/multiferroic 2D semiconductors by TM doping. Our first-principles designs are based on previous experimental synthesis of intercalated metal dichalcogenides TX 2 such as M x MoS 2 (M = Ni, Cu, Ag, Cd), [23] (Ni, Cr) 0.33 TS 2 (T = Nb, Ta), [24,25] and Cu x Bi 2 Se 3 , [26][27][28][29][30] holding various "guest" species of atomic thickness in their interlayer space. The adopted methods include traditionally melt growth and chemical interaction method as well as electrochemical intercalation method developed recently, [28] which can efficaciously regulate the concentration of metal ions into layered. Those successful syntheses may be also attributed to the intercalated metal ions such as Ni, Cu, and Ag relatively with much lower cohesive energy in their bulk metals compared with other 3d metals such as Ti or V. A vertical switchable polarization together with a magnetic moment can be induced upon the intercalation of those TM ions. As a result, those 2D high-mobility semiconductors can be endowed with multiferroicity via such doping, and the magnetism can be tuned upon FE switching, rendering efficient "electric writing + magnetic reading" for high-density data storage.The direct combination of high-mobility semiconductors and efficient multiferroic memories within the same material is desirable for integration of multifunctional electronics but remains a challenge. Stimulated by recent progress on intercalation of layered materials, first-principles evidence of 2D room-temperature multiferroicity in a series of doped metal dichalcogen...

show abstract

Section: Resultsmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

2D Diluted Multiferroic Semiconductors upon Intercalation

2019

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…The space group of Cr 1/3 NbS 2 lacks an inversion center symmetry, similar to skyrmion materials. However, instead of forming a skyrmion lattice, Cr 1/3 NbS 2 forms a unique magnetic soliton lattice when a magnetic field is applied perpendicular to the c -axis. ,− Above a critical magnetic field, the soliton lattice transforms into a ferromagnetic state. ,, In reduced dimensions, spin soliton confinement was recently observed in 1 μm wide grains of a Cr 1/3 NbS 2 crystal, where discretized but robust electric transport effects were characterized . Transport measurements were also performed on exfoliated thin flakes, where sharp and hysteretic resistance jumps were observed on flakes between 48 nm and 1 μm .…”

Section: Materials and Methodsmentioning

confidence: 99%

Tuning Magnetic Soliton Phase via Dimensional Confinement in Exfoliated 2D Cr_1/3NbS₂ Thin Flakes

et al. 2018

View full text Add to dashboard Cite

Thin flakes of CrNbS are fabricated successfully via microexfoliation techniques. Temperature-dependent and field-dependent magnetizations of thin flakes with various thicknesses are investigated. When the thickness of the flake is around several hundred nanometers, the softening and eventual disappearance of the bulk soliton peak is accompanied by the appearance of other magnetic peaks at lower magnetic fields. The emergence and annihilation of the soliton peaks are explained and simulated theoretically by the change in spin spiral number inside the soliton lattice due to dimensional confinement. Compared to the conventional magnetic states in nanoscale materials, the stability and thickness tunability of quantified spin spirals make CrNbS a potential candidate for spintronics nanodevices beyond Moore's law.

show abstract

Single-layer dispersions of transition metal dichalcogenides in the synthesis of intercalation compounds

Golub¹,

Zubavichus²,

Slovokhotov³

et al. 2003

Russ. Chem. Rev.

View full text Add to dashboard Cite

Chemical methods for the exfoliation of transition metal Chemical methods for the exfoliation of transition metal dichalcogenides in a liquid medium to give single-layer dispersions dichalcogenides in a liquid medium to give single-layer dispersions containing quasi-two-dimensional layers of these compounds are containing quasi-two-dimensional layers of these compounds are surveyed. Data on the structure of dispersions and their use in the surveyed. Data on the structure of dispersions and their use in the synthesis of various types of heterolayered intercalation com-synthesis of various types of heterolayered intercalation compounds are discussed and described systematically. Structural pounds are discussed and described systematically. Structural features, the electronic structure and the physicochemical proper-features, the electronic structure and the physicochemical properties of the resulting intercalation compounds are considered. The ties of the resulting intercalation compounds are considered. The potential of this method of synthesis is compared with that of potential of this method of synthesis is compared with that of traditional solid-state methods for the intercalation of layered traditional solid-state methods for the intercalation of layered crystals. The bibliography includes 192 references crystals. The bibliography includes 192 references. .

show abstract

XAFS study of local atomic environment in well- and ill-ordered transition metal sulfides MxTS2 (T=Mo, Nb, Ta) derived from TS2 intercalates

Cited by 4 publications

References 15 publications

2D Diluted Multiferroic Semiconductors upon Intercalation

2D Diluted Multiferroic Semiconductors upon Intercalation

Tuning Magnetic Soliton Phase via Dimensional Confinement in Exfoliated 2D Cr_1/3NbS₂ Thin Flakes

Single-layer dispersions of transition metal dichalcogenides in the synthesis of intercalation compounds

Contact Info

Product

Resources

About

XAFS study of local atomic environment in well- and ill-ordered transition metal sulfides MxTS2 (T=Mo, Nb, Ta) derived from TS2 intercalates

Cited by 4 publications

References 15 publications

2D Diluted Multiferroic Semiconductors upon Intercalation

2D Diluted Multiferroic Semiconductors upon Intercalation

Tuning Magnetic Soliton Phase via Dimensional Confinement in Exfoliated 2D Cr1/3NbS2 Thin Flakes

Single-layer dispersions of transition metal dichalcogenides in the synthesis of intercalation compounds

Contact Info

Product

Resources

About

Tuning Magnetic Soliton Phase via Dimensional Confinement in Exfoliated 2D Cr_1/3NbS₂ Thin Flakes