Magnetic Order in Pulsed Laser Deposited (Fe,Ni)5GeTe2 Films

Tamal Kumar Dalui; John Derek Demaree; Thomas Parker; Ramesh C. Budhani

Magnetic Order in Pulsed Laser Deposited (Fe,Ni)5GeTe2 Films

Materials Science 2026-05-15 v2 Strongly Correlated Electrons

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

Abstract

We report the successful 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 (000l) 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 Ohm-1cm-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.

Keywords

(Fe,Ni)5GeTe2 pulsed laser deposition ferromagnetic thin films anomalous Hall effect van der Waals Curie temperature magnetoresistance

Cite

@article{arxiv.2508.13085,
  title  = {Magnetic Order in Pulsed Laser Deposited (Fe,Ni)5GeTe2 Films},
  author = {Tamal Kumar Dalui and John Derek Demaree and Thomas Parker and Ramesh C. Budhani},
  journal= {arXiv preprint arXiv:2508.13085},
  year   = {2026}
}

Magnetic Order in Pulsed Laser Deposited (Fe,Ni)5GeTe2 Films

Abstract

Keywords

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