Pseudo magnetic properties and evidence for vortex state in Fe2NiGe Heusler alloy thin films

Kumar Roul, R. and Kumar Jana, A. and Narayana, Jammalamadaka S (2022) Pseudo magnetic properties and evidence for vortex state in Fe2NiGe Heusler alloy thin films. Journal of Magnetism and Magnetic Materials, 556. pp. 1-9. ISSN 0304-8853

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Abstract

We report on the anisotropy, pseudo magnetic properties and formation of vortex state in Fe2NiGe thin films. From the torque measurements, estimated anisotropy constants K1 and K2 are found to be 4.47 × 103 J/m3 and −1.98 × 102 J/m3 respectively. Pseudo magnetic properties such as pseudo hysteresis work and pseudo remanence work infer that motion of domain wall in Fe2NiGe is rather smooth. The crest height and trough depth coefficient from the second stage of magnetization curves are estimated and are found to be 9.44 × 106 (A/m).mT and 8.76 × 106 (A/m).mT respectively. First order reversal curves infer switching field distribution is very small, which infers that less dislocations and more grain size. Indeed, the vortex state is evident from the contour graph of the first order reversal curves. We believe present results would be helpful for the future spintronic devices based on Heusler alloy thin films. © 2022 Elsevier B.V.

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IITH Creators:

IITH Creators	ORCiD
Narayana, Jammalamadaka S	UNSPECIFIED

Item Type:

Article

Additional Information:

We would like to thank Indian Institute of Technology Hyderabad (IITH) for financial assistance. SNJ would like to thank DST – SERB Core research grant (CRG/2020/003497) and DST – FIST for the grant (SR/ FST/PSI-215/2016). Rajesh Kumar Roul would like to thank DST – Inspire for the fellowship. The data that support the findings of this study are available from the corresponding author upon reasonable request.

Uncontrolled Keywords:

Anisotropy, First order reversal curves, Minor loop, Pseudo hysteresis loss, Pseudo remanence work, Vortex state

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

20 Jun 2022 10:18

Last Modified:

22 Jun 2022 08:45