# Correlation between Microstructural and Magnetic Properties of Epitaxial YIG Films by Pulsed Laser Deposition

## TL;DR

This study explores how the growth conditions of YIG films affect their microstructure and magnetic properties, enabling better performance in spintronic devices.

## Contribution

The paper establishes a direct correlation between epitaxial strain and magnetic properties in YIG films, enabling rapid quality assessment.

## Key findings

- Residual epitaxial strain directly influences effective magnetization and magnetic damping in YIG films.
- Optimized pulsed-laser deposition parameters yield YIG films with ultralow magnetic damping.
- The findings provide a simplified method for evaluating YIG film quality for spintronic applications.

## Abstract

In this study, we investigate the relationships among
film growth
conditions, crystalline microstructure, and magnetic properties of
epitaxial yttrium iron garnet (Y3Fe5O12, YIG) thin films, deposited on gallium gadolinium garnet (Ga3Gd5O12, GGG). A direct correlation was
observed between the residual epitaxial strain, bulk magnetic properties
like effective magnetization and magnetic damping, and the performance
of spin-wave transmission devices based on these films. This correlation
offers a pathway for a simplified, rapid assessment of YIG film quality,
avoiding the need for complex time-consuming characterization techniques.
In addition, we report a comprehensive investigation into the influence
of pulsed-laser deposition parameters, including deposition temperature,
pressure, laser fluence, frequency, and annealing conditions. Through
systematic deposition optimization, state-of-the-art YIG films exhibiting
ultralow magnetic damping could be obtained, which is critical for
high-performance spintronic applications.