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journal article·2019-09-01Open access

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

Tomáš Ilit’, Pavol Valko, Jozef Sitek, Patrik Novák, Milan Držík, Dagmar Senderáková, Mariana Ušáková, Marian Marton, Miroslav Behúl, Martin Tomáška, Miroslav Potočný, Marian Vojs

AIP Advances· Volume 9· Issue 9
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Abstract

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.
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Research context

OpenAlex topics: Magnetic properties of thin films · Magneto-Optical Properties and Applications · Magnetic Properties and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Nuclear and Physical Engineering at the Faculty of Electrical Engineering and Information Technology of Slovak University of Technology 1 , Bratislava 812 19, Slovakia

International Laser Center 2 , Bratislava 841 04, Slovakia

Department of Experimental Physics of the Faculty of Mathematics, Physics and Informatics of the Comenius University in Bratislava 3 , Bratislava 842 48, Slovakia

Institute of Electrical Engineering at the Faculty of Electrical Engineering and Information Technology of the Slovak University of Technology 4 , Bratislava 812 19, Slovakia

Institute of Electronics and Photonics at the Faculty of Electrical Engineering and Information Technology of the Slovak University of Technology 5 , Bratislava 812 19, Slovakia

Funding

STU FEI Grant Scheme for Young Researchers · European Space Agency · Agentà ra Ministerstva Å kolstva, Vedy, Výskumu a Å portu SR

References (12)

Show source-provided references
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