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ROVIROLA METCALFE MARC_4253513_assignsubmission_file_TFG-Rovirola-Metcalfe-Marc.pdf (1.35 MB)

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Bachelor thesis

Publication date

2021-07

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cc-by-nc-nd (c) Rovirola, 2021
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/180906

Magnetoelastic effect with Surface Acoustic Waves in Nickel

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Abstract

Surface acoustic waves (SAW) are micrometric strain waves that propagate on the surface of a solid. They are good for a number of applications and have recently been used for their ability to couple with magnetic states in magnetostrictive materials. In this paper we study the SAW absorption of a magnetic material (Nickel) and find the angle dependence between the SAW propagation direction and the magnetic field orientation. We find that when SAW and the magnetic field are perpendicular or parallel there is no power absorption, but a maximum appears at 45 degrees. Furthermore, there is a dependence with the strength of the magnetic field. At high enough fields the magnetic moments are saturated and have enough energy to overcome the coupling generated by SAW, whereas at lower magnetic fields there is SAW attenuation and a maximum appears at a resonant frequency

Description

Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2021, Tutor: Ferran Macià Bros

Subject

Ones acústiques de superfície, Níquel, Treballs de fi de grau

Subject (English)

Acoustic surface waves, Nickel, Bachelor's theses

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Treballs Finals de Grau (TFG) - Física

Citation

ROVIROLA METCALFE, Marc. Magnetoelastic effect with Surface Acoustic Waves in Nickel. [consulted: 10 of August of 2026]. Available at: https://hdl.handle.net/2445/180906

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