Facilities

Home-built ⁴He MFM 1

Specifications:

• Temperature range: 4.2 K – 300 K
• Magnetic field: 2-2-9 T in x-y-z direction
• Detection scheme: Optical fiber interferometry
• Multisample stage for comparative studies
• Operating inside a vibration-isolation system

Ref: Yang el. al.,  Rev. Sci. Instrum. 87, 023704 (2016), Kim el. al., Rev. Sci. Instrum. 93, 063701 (2022)

Home-built ⁴He MFM 2

Specifications:

• Temperature range: 4.2 K – 300 K
• Magnetic field: 7 T in z direction
• Detection scheme: Piezoresistive cantilever
• Multisample stage for comparative studies
• Operating inside a vibration-isolation system
• Duel scanner

Ref: Lee el. al.,  Rev. Sci. Instrum. 95, 073701 (2024)

In-situ Omicron VT-SPM with DC magnetron sputtering system

Specifications:

1)Omicron VT-SPM

• Temperature range: 20 K – 300 K
• Vacuum: up to 10^-10 Torr
• Detection scheme: laser beam-deflection
• Multisample carousell
• Modes: MFM, AFM, PFM, EFM, conductive AFM, STM
• in-situ sample transfer from sputtering system

2)DC magnetron sputtering system

• Vacuum: up to 10^-10 Torr
• Sample heating range: up to 900℃
• Target size: 1.55 inch

The cryogenic-free magnet system

Specifications:

• Temperature range: 1.6 K – 400 K
• Magnetic field range: 9 T in z direction
• 12 electrical leads available
• Measurement modes: 4-probe resistivity, Hall