A novel method for time-resolved measurement of magnetization dynamics induced by femtosecond laser pulse in highly absorbing and metallic layer coated thin films based on a magnetic loop antenna

A novel method for time-resolved measurement of magnetization dynamics induced by femtosecond laser pulse in highly absorbing and metallic layer coated thin films based on a magnetic loop antenna

Femtosecond laser-induced magnetization dynamics is a popular research topic, due to its potential applications in fast magnetic storage devices and the field of spintronics. In the article we present a novel technique for time-resolved measurement of femtosecond laser-induced magnetization dynamics...

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Bibliographic Details
Published in:AIP advances Vol. 9; no. 9; pp. 095044 - 095044-5
Main Authors: Ilit’, Tomáš, Valko, Pavol, Sitek, Jozef, Novák, Patrik, Držík, Milan, Senderáková, Dagmar, Ušáková, Mariana, Marton, Marian, Behúl, Miroslav, Tomáška, Martin, Potočný, Miroslav, Vojs, Marian
Format: Journal Article
Language:English
Published: Melville American Institute of Physics 01-09-2019
AIP Publishing LLC
Subjects:
Curie temperature
Dynamics
Femtosecond pulses
Ferromagnetic materials
Gadolinium
Lasers
Loop antennas
Magnetic storage
Magnetism
Magnetization
Optics
Spintronics
Thick films
Thin films
Time measurement
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Summary:Femtosecond laser-induced magnetization dynamics is a popular research topic, due to its potential applications in fast magnetic storage devices and the field of spintronics. In the article we present a novel technique for time-resolved measurement of femtosecond laser-induced magnetization dynamics, based on inductive sensing by a loop antenna. It allows performing investigation of magnetization dynamics in highly absorbing samples, samples with patterned surfaces and samples coated by a thin metallic layer, which are difficult to study using optical techniques. To test the technique, both thick and thin films made of highly absorbing and diffusing materials, were used. Results of tests for several ferromagnetic materials including Gadolinium are discussed in the article. The test results prove that the method provides a simple tool to observe and study magnetization dynamics phenomena in the vicinity of the materials’ Curie temperature.
ISSN:2158-3226
2158-3226
DOI:10.1063/1.5097027