Magneto-optical Kerr effect (MOKE)

Dr. Jan Fikáček

Magneto‑optical Kerr effect (MOKE): When linearly polarized light reflects from a magnetized surface, the plane of polarization rotates from its original direction. The information depth of the MOKE is 10-15 nm in metals.

The setup is moreover equipped with electrical wireing (8 connections) for transport measurements in a 4-point geometry. 2 additional shielded cables allow to couple high frequency signals, e.g. for surface acoustic waves or other applications.

Equipment:

• optical cryostat with temperature range 2.5-370 K
• Laser source: 670 nm wavelength, 1.85 eV, ~ 1mW
• detection diode
• in-plane fields (0.125 T maximum)
• out-of-plane fields (0.065 T maximum)
• lock-in amplifier (Stanford SR830) for transport

Reservation contact: Dr. Fikáček, fikacekfzu [dot] cz