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Synthesis and characterisation of fluorinated epitaxial films of BaFeO2F: tailoring magnetic anisotropy via a lowering of tetragonal distortion

Nair, Akash ; Wollstadt, Stephan ; Witte, Ralf ; Dasgupta, Supratik ; Kehne, Philipp ; Alff, Lambert ; Komissinskiy, Philipp ; Clemens, Oliver (2019)
Synthesis and characterisation of fluorinated epitaxial films of BaFeO2F: tailoring magnetic anisotropy via a lowering of tetragonal distortion.
In: RSC Advances, 2019, 9 (64)
doi: 10.25534/tuprints-00009678
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Synthesis and characterisation of fluorinated epitaxial films of BaFeO2F: tailoring magnetic anisotropy via a lowering of tetragonal distortion
Language: English
Date: 2019
Year of primary publication: 2019
Publisher: Royal Society of Chemistry
Journal or Publication Title: RSC Advances
Volume of the journal: 9
Issue Number: 64
DOI: 10.25534/tuprints-00009678
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Origin: Secondary publication via sponsored Golden Open Access
Abstract:

In this article, we report on the synthesis and characterisation of fluorinated epitaxial films of BaFeO2F via low-temperature fluorination of thin films of BaFeO2.5+d grown by pulsed laser deposition. Diffraction measurements show that fluoride incorporation only results in a contraction of the film perpendicular to the film surface, where clamping by the substrate is prohibitive for strong in-plane changes. The fluorinated films were found to be homogenous regarding the fluorine content over the whole film thickness, and can be considered as single crystal equivalents to the bulk phase BaFeO2F. Surprisingly, fluorination resulted in the change of the tetragonal distortion to a nearly cubic symmetry, which results in a lowering of anisotropic orientation of the magnetic moments of the antiferromagnetically ordered compound, confirmed by Mössbauer spectroscopy and magnetic studies.

Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-96783
Classification DDC: 600 Technology, medicine, applied sciences > 600 Technology
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Materialdesign durch Synthese
Date Deposited: 11 Dec 2019 13:18
Last Modified: 11 Dec 2019 13:18
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/9678
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