Metal-insulator Transition

What is the Metal-Insulator Transition (MIT)?

• The transition from a metal to an insulator due to temperature changes

• The transition from an insulator to a metal due to temperature changes

• The transition from a metal to an insulator due to pressure changes

• Both a and b

What material is well-known for exhibiting MIT at around 67 degrees Celsius?

• Silicon dioxide

• Vanadium dioxide

• Aluminum oxide

• Titanium dioxide

What crystal structure does VO2 have in its insulating state?

• Cubic

• Tetragonal

• Monoclinic

• Orthorhombic

Which method is NOT typically used to prepare VO2 thin films?

• Pulsed Laser Deposition (PLD)

• Chemical Vapor Deposition (CVD)

• Magnetron Sputtering

• Electrolysis

Which of the following techniques is used to study the crystal structure of VO2 thin films?

• X-ray Diffraction (XRD)

• Atomic Force Microscopy (AFM)

• Spectroscopic Ellipsometry

• Fourier Transform Infrared Spectroscopy (FTIR)

What structural change accompanies the MIT in VO2?

• From monoclinic to cubic

• From monoclinic to rutile

• From rutile to monoclinic

• From cubic to monoclinic

Which property of VO2 can be used to confirm the occurrence of the MIT?

• Hardness

• Melting point

• Resistivity

• Density

What is one potential application of the MIT in VO2 thin films?

• Non-volatile memory devices

• Fuel cells

• Solar cells

• Lithium-ion batteries

At what temperature does VO2 transition from an insulator to a metal?

• 50 degrees Celsius

• 67 degrees Celsius

• 100 degrees Celsius

• 150 degrees Celsius

In which spectroscopic technique VO2 shows a drastic change in its optical properties across the MIT?

• Raman Spectroscopy

• UV-Vis-NIR Spectroscopy

• X-ray Photoelectron Spectroscopy (XPS)

• Infrared Spectroscopy (IR)