Publications by authors named "J A Arregi"
Seeking to enhance the strength of the interlayer Dzyaloshinskii-Moriya interaction (IL-DMI) through a combination of atomic and Rashba type spin-orbit coupling (SOC) we studied the strength and the thickness evolution of effective interlayer coupling in Co/Ag/Co trilayers by means of surface sensitive magneto-optical measurements that take advantage of the light penetration depth. Here, we report the observation of oscillatory, thickness-dependent chiral interaction between ferromagnetic layers. Despite the weakness of the Ag atomic SOC, the IL-DMI in our trilayers is orders of magnitude larger than that of known systems using heavy metals as a spacer except of recently reported -0.
View Article and Find Full Text PDFPreserving Metamagnetism in Self-Assembled FeRh Nanomagnets.
ACS Appl Mater Interfaces
February 2023
Article Synopsis
- Researchers are tackling the challenge of maintaining the desired properties of phase-change materials when transitioning to nanoscale forms, particularly with metamagnetic FeRh nanoislands.
- The self-assembly process of these nanoislands results in different shapes and sizes, impacting their magnetic properties based on the way they are formed.
- The methods used to create and manipulate these nanoislands allow for control over their phase transition behavior, ultimately showing potential for scalable production of nanomagnets that retain their magnetic characteristics.
Flexible materials have brought up a new era of application-based research in stretchable electronics and wearable devices in the last decade. Tuning of magnetic properties by changing the curvature of devices has significant impact in the new generation of sensor-based technologies. In this work, magnetostrictive FeGa thin films have been deposited on a flexible Kapton sheet to exploit the magneto-elastic coupling effect and modify the magnetic properties of the sample.
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