Work

Magnetic order in pulsed laser deposited films of van der Waals magnet (Fe,Ni)5GeTe2

Year: 2025

Type: article

Abstract: We report the growth of highly textured thin films of (Fe,Ni)5GeTe2 two-dimensional ferromagnet on c-plane sapphire using pulsed laser deposition. Structural characterization via x-ray diffraction confirms preferential orientation along the (0001) direction, indicative of a high crystallographic texture. These films of van der Waals (vdW) type interplanar bonding exhibit robust ferromagnetism with a Curie temperature reaching ≈498 K. Electrical transport measurements reveal a clear anomalous Hall effect, with an anomalous Hall conductivity and Hall angle (%) of ≈20 Ω−1 cm−1 and ≈0.90, respectively. Furthermore, the magnetoresistance displays a pronounced dependence on film thickness, highlighting the tunability of spin-dependent transport in these vdW ferromagnetic thin films.

Source: Applied Physics Letters

DOI: 10.1063/5.0288752

Authors: Tamal Kumar Dalui, John Derek Demaree, Thomas Parker, Ramesh C. Budhani

Institutions: Morgan State University, DEVCOM Army Research Laboratory, United States Army Combat Capabilities Development Command

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: U.S. Department of Defense

Award: CENTER FOR ADVANCED ELECTRO-PHOTONICS WITH 2D MATERIALS