Pressure-induced structural transition and metallization in MnSe2

Wang, Baoyun; Wang, Xiaoning; Wang, Simeng; Xiao, Wansheng; Liang, Wen; Song, Mo

doi:10.1007/s00269-020-01111-9

Cited by 4 publications

(4 citation statements)

References 49 publications

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“…Having established that the MIT, the SRT, and structural modification occur at ~Pc , we now discuss the possible origin of such concomitant transitions in Mn 3 Si 2 Te 6 . In various manganese chalcogenides, including MnPCh 3 34 , MnCh 35 and MnCh 2 (Ch = S, Se, Te) [36][37][38][39] , the pressure-driven MIT is known to be accompanied by a structural transition. In these manganese chalcogenides, the spin crossover transition from the high-spin (t 3 2g e 2 g ) to the low-spin (t 5 2g e 0 g ) states of Mn 2+ atoms commonly triggers the so-called giant volume collapse by at least ~20% and introduces the Mn-Mn metallic bonding due to the drastic reduction of the Mn 2+ ionic size from 0.83 to 0.67 Å.…”

Section: Resultsmentioning

confidence: 99%

High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6

Susilo,

Kwon,

Lee

et al. 2024

Nat Commun

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Symmetry-protected band degeneracy, coupled with a magnetic order, is the key to realizing novel magnetoelectric phenomena in topological magnets. While the spin-polarized nodal states have been identified to introduce extremely-sensitive electronic responses to the magnetic states, their possible role in determining magnetic ground states has remained elusive. Here, taking external pressure as a control knob, we show that a metal-insulator transition, a spin-reorientation transition, and a structural modification occur concomitantly when the nodal-line state crosses the Fermi level in a ferrimagnetic semiconductor Mn3Si2Te6. These unique pressure-driven magnetic and electronic transitions, associated with the dome-shaped Tc variation up to nearly room temperature, originate from the interplay between the spin-orbit coupling of the nodal-line state and magnetic frustration of localized spins. Our findings highlight that the nodal-line states, isolated from other trivial states, can facilitate strongly tunable magnetic properties in topological magnets.

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Section: Resultsmentioning

confidence: 99%

High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6

Susilo,

Kwon,

Lee

et al. 2024

Nat Commun

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“…45 However, there is less exploration of the application of MnSe 2 for photocatalytic H 2 production. 46 Inspired by the discussion presented above, it is found that RP and MnSe 2 possess an appropriate staggered band structure for photocatalytic H 2 evolution. These characteristics meet the requirements for the formation of S-scheme heterojunction.…”

Section: Introductionmentioning

confidence: 91%

“…The material exhibited specific cyclic stability, maintaining a specific capacity of 103.76 mAh g –1 after undergoing 3000 cycles . However, there is less exploration of the application of MnSe 2 for photocatalytic H 2 production …”

Section: Introductionmentioning

confidence: 99%

S-Scheme Heterojunctions Formed by MnSe₂ Cubic Microparticles Supported on Red Phosphorus Nanosheets as Photocatalyst for H₂ Production

Wang,

Lei,

Sun

et al. 2024

ACS Appl. Nano Mater.

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Efficient photocatalysts possess significant potential for the technology of green hydrogen (H 2 ) production and environmental sustainability. Photocatalytic water splitting represents a promising method for the generation of green H 2 . In this study, cubic MnSe 2 was combined with amorphous RP nanosheets through a simple solvent evaporation method. The results demonstrated that 5 wt % MnSe 2 /RP composite exhibited an optimal H 2 production rate of 940 μmol g −1 h −1 , using Na 2 S/Na 2 SO 3 as a sacrificial agent, under 300 W Xe lamp irradiation, which is 3.5 and 22 times higher than that obtained by pure RP (210 μmol g −1 h −1 ) and MnSe 2 (40 μmol g −1 h −1 ), respectively. Furthermore, the migration paths of MnSe 2 /RP were examined through •O 2 − radical trapping experiments, confirming that the charge transfer between MnSe 2 and RP follows the S-scheme route, which promotes charge separation and provides more active sites for the reduction of H + to H 2 . In addition, the surface composition and structure analysis were analyzed using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, etc. This study presents a promising approach to utilizing selenides as efficient photocatalysts by constructing S-scheme heterojunctions in the field of photocatalysis.

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“…[4][5][6][7][8] Recently, nanostructured MnSe 2 has attracted great interest due to its unique and fascinating magnetic properties. [9][10][11] Compared to bulk materials, the high surface to volume ratio in nanomaterials usually lead to the reduced coordination and lack of symmetry of surface spins, which is believed to be the main reason for the significant change in the magnetic order. Nazir et al [12] prepared MnSe 2 nanosheets with a thickness of about 150 nm via a hydrothermal method, and confirmed their antiferromagnetic (AFM) properties.…”

Section: Introductionmentioning

confidence: 99%

Top‐Down Preparation and Magnetic Properties of MnSe₂ Nanoparticles

Liang,

Yu,

et al. 2024

Physica Status Solidi (a)

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Nanostructured transition metal dichalcogenide MnSe2 has attracted much attention due to its fascinating magnetic properties. In this article, a series of MnSe2 nanoparticles with different particle sizes are successfully prepared by a facile top‐down method of solid‐state reaction combined with ball milling, and the effects of ball milling on the phase composition, microstructure and magnetic properties of the MnSe2 are systematically studied. The results show that pure MnSe2 microparticles are obtained by the solid‐state reaction, however, partial MnSe2 is decomposed after ball milling for 16 h. The average particle size of the MnSe2 gradually decreases with the increase of milling time. MnSe2 nanoparticles with average particle size approximately 65 nm are obtained after milling for 40 h. After milling, the antiferromagnetic MnSe2 nanoparticles exhibit weak ferromagnetic characteristics due to the surface effect and the microstrain induced by ball milling. The residual magnetization (Mr) and coercivity (Hc) of the sample gradually increase as the particle size decreases. The Mr and Hc of the sample milled for 40 h reach 70.13 × 10−4 emu g−1 and 67.47 Oe, respectively.

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Pressure-induced structural transition and metallization in MnSe2

Cited by 4 publications

References 49 publications

High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6

High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6

S-Scheme Heterojunctions Formed by MnSe₂ Cubic Microparticles Supported on Red Phosphorus Nanosheets as Photocatalyst for H₂ Production

Top‐Down Preparation and Magnetic Properties of MnSe₂ Nanoparticles

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Pressure-induced structural transition and metallization in MnSe2

Cited by 4 publications

References 49 publications

High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6

High-temperature concomitant metal-insulator and spin-reorientation transitions in a compressed nodal-line ferrimagnet Mn3Si2Te6

S-Scheme Heterojunctions Formed by MnSe2 Cubic Microparticles Supported on Red Phosphorus Nanosheets as Photocatalyst for H2 Production

Top‐Down Preparation and Magnetic Properties of MnSe2 Nanoparticles

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Product

Resources

About

S-Scheme Heterojunctions Formed by MnSe₂ Cubic Microparticles Supported on Red Phosphorus Nanosheets as Photocatalyst for H₂ Production

Top‐Down Preparation and Magnetic Properties of MnSe₂ Nanoparticles