MnO2 Crystal

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BLK-MnO2
Condition:
New
  • Large size MnO2 crystals
  • MnO2 Crystal
  • Exfoliatable MnO2
  • MnO2 Crystal
  • Raman spectrum of vdW MnO2 crystals
$420.00
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Description

Manganese dioxide (MnO2) is a 2D ferromagnetic [1], catalytic [2] , and semiconducting material. It is layered and as easy to exfoliate as MoS2 or graphite. In the bulk form, MnO2 has 1.5 eV predicted band gap while it has been anticipated to increase to 2.0 eV in the monolayer form [2]. Environmentally stable delta (layered) phase of MnO2 has been synthesized using float zone technique at centimeter scales. In its delta-phase, MnO2 crystal structure assumes R-3m phase (see images) which contains layers stacked onto each other vdW bonding. Each layer has three atomic thick arrangement consisting of O-Mn-O layers as shown in the diagram in product images. The material is environmentally stable in air, water, and different gases. Layers can easily exfoliated onto desired substrates with minimal efforts as shown in the product images. Please see our Raman spectrum below. All these products are handled using non-magnetic tweezers and in non-magnetic environment with tools that are free of magnetic impurities to ensure intrinsic magnetic properties can be confidently measured and probed.

Potential applications

  • Inert 2D substrates
  • Thermodynamically stable catalytic material
  • Solar cells
  • Layered Battery applications as a cathode materials

Atomic depiction of MnO2 layers 

mno2-ii.png

 Lattice Parameters of MnO2

Sample size Centimeter sized
Exfoliation Easy to exfoliate
Electrical properties Bulk form 1.5 eV (predicted) and monolayer 2.0 eV (predicted)
Crystal structure δ-phase
Unit cell parameters a=b=0.569 nm, c=0.81 nm
Characterization methods Raman, photoluminescense, TEM, EDS

 

 Raman Spectrum of MnO2 crystals

mno2-raman-spectrum.png

References

[1] J. Phys. Chem. Lett.20134 (20), pp 3382–3386

[2] Kitchaev et.al. Phys. Rev. B 93, 045132 (2016)

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Additional Information

Elements:
Mn,O
Element:
Manganese
Element:
Oxygen
Formula:
MnO2
Material class:
MX2
Material class:
Oxide
Properties:
Semiconductor
Properties:
Magnet
Band gap range:
IR
Band gap range:
VIS
Growth method:
Float zone
Doping:
Undoped
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