Ferromagnetic resonance in Y3AlFe4O12 garnets

TL;DR

This study investigates the spin dynamics of Al-substituted yttrium iron garnets using broadband ferromagnetic resonance, analyzing temperature-dependent resonance field and linewidth to assess sample quality for spintronic applications.

Contribution

It provides new insights into the temperature-dependent ferromagnetic resonance properties of Al-substituted yttrium iron garnets, highlighting their potential for high-speed spintronic devices.

Findings

Resonance field and linewidth vary with temperature.

Sample quality assessed via resonance parameters.

Implications for spintronic device applications.

Abstract

Spin dynamics in Al-substituted yttrium iron garnets is investigated using broadband ferromagnetic resonance measurements in the temperature range T=200-360 K. Using the measured data, the resonance field and linewidth as well as their temperature dependence are determined, with implications for the uniformity and overall quality of the samples prepared via different chemical fabrication routes. These key parameters governing the spin dynamics in the material are important for its applications in high-speed spintronic and magnonic devices.