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Development of a technique for inductive measurement of laser-induced magnetization dynamics in thin films

Ilit’ Tomáš, Valko Pavol, Držík Milan, Ušáková Marianna, Šoka Martin, Marton Marian, Behúl Miroslav, Vojs Marian

Metrology and Measurement Systems

2019

Vol. 26, nr 3

531--540

We present the development of a technique for studying laser-induced magnetization dynamics, based on inductive measurement. The technique could provide a simple tool for studying laser-induced demagnetization in thin films and associated processes, such as Gilbert damping and magnetization precession. It was successfully tested using a nanosecond laser and NiZn ferrite samples and - after further development - itis expected to be useful for observation of ultra-fast demagnetization. The combination of optical excitation and inductive measurement enables to study laser-induced magnetization dynamics in both thin and several micrometre thick films and might be the key to a new principle of ultrafast broadband UV-IR pulse detection.