Journal Article

PUBDB-2026-00518

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Tuning the structural, electronic, and magnetic properties of CoFe$_2$O$_4$ thin films via swift heavy ion irradiation

Sen, S. (Corresponding author)Extern* ; Dwivedi, A. ; Shrivastava, V.Extern* ; Gupta, Y.Extern* ; Ansari, M. R. ; Chowdhury, S.Extern*DESY* ; Dey, J. K.DESY* ; Hoesch, M.DESY* ; Upadhyay, S. K.Extern* ; Gadani, K. ; Gome, A. ; Gupta, R.Extern*

2026
Ceramurgia Faenza

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Please use a persistent id in citations: doi:10.1016/j.ceramint.2025.11.413

Abstract: The present work explores the effect of 120 MeV Au9+ ion irradiation on the structural, electronic, and magnetic behavior of CoFe2O4 (CFO) thin films, prepared by Pulsed Laser deposition (PLD) technique. Grazing incidence X-ray diffraction (GIXRD) analysis revealed that with increasing ion fluences there is peak broadening and decrease in diffraction intensity, which results reduction in crystallite size and partial amorphization. X-ray photoelectron spectroscopy (XPS) analysis showed an increase in oxygen vacancy concentration, accompanied by partial reduction of Co and Fe cations. A decrease in saturation magnetization and enhanced coercivity has been observed with increasing ion fluence, consistent with defect-induced pinning. Law of Approach to Saturation (LAS) fitting on the hysteresis curve has been carried out for the estimation of the effective anisotropy constant (Keff), which provides the quantitative evidence of irradiation-induced magnetic anisotropy enhancement. X-ray magnetic circular dichroism (XMCD) confirmed element-specific changes in magnetic moments. The observed results are explained in terms of disruption in superexchange interactions of Co2+−O2−−Fe3+ after ion irradiation due to significant modifications in the oxidation states of Co and Fe ions within CFO thin films.

Note: ISSN 0272-8842 not unique: **2 hits**. Waiting for fulltext

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. PETRA-S (FS-PETRA-S)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. INDIA-DESY - INDIA-DESY Collaboration (2020_Join2-INDIA-DESY) (2020_Join2-INDIA-DESY)

Experiment(s):

1. PETRA Beamline P04 (PETRA III)

Appears in the scientific report 2026

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Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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