XIX International Young Scientists Conference on Applied Physics

TEMPERATURE-INDUCED CHANGES IN STATIC AND DYNAMIC MAGNETIC PROPERTIES OF Py/FeMn BILAYERS

Not scheduled

20m

Faculty of Radio Physics, Electronics and Computer Systems

Oral Magnetism and Superconductivity Magnetism and Superconductivity

Speaker

Mr Vladyslav Borynskyi (Faculty of Radio Physics, Electronics and Computer Systems, Taras Shevchenko National University of Kyiv)

Abstract Content

Collective magnetization dynamics has been studied for the exchange-coupled Py/FeMn bilayers with a varied thickness of an antiferromagnetic FeMn layer. In performed ferromagnetic-resonance (FMR) experiments, the collective dynamics manifests itself in two separate FMR lines, which can be attributed to the acoustic and optical resonance modes. The analysis of temperature- and angle-dependent FMR behavior of the acoustic mode yields enhanced effective magnetization of the bilayer and gives evidence of a non-zero magnetic moment in FeMn. The results obtained testify that a combination of ferromagnetic and antiferromagnetic materials may provide extraordinary thermo-magnetic properties which are now of great interest for practical applications in the field of spintronics (memory devices, nanooscillators, etc.).