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@INPROCEEDINGS{Xu:1031779,
author = {Xu, Yifan and Qdemat, Asmaa and Bednarski-Meinke, Connie
and Hussein, Mai and Petracic, Oleg and Tober, Steffen},
title = {{I}nvestigation of the structural and magnetic properties
of thein-terface in {F}e3{O}4/{T}i{O}2-{N}b:{STO}
heterostructures},
reportid = {FZJ-2024-05806},
year = {2024},
abstract = {The Fe3O4/Nb:STO system has gathered significant attention
due to its potential application in spintronicsand
memristors. The interface between Fe3O4 and Nb:STO plays a
crucial role in determiningthe overall electronic and
magnetic properties of the system. We present an
investigation of a 30nm Fe3O4 thin film on a TiO2 terminated
Nb-doped SrTiO3 (TiO2-Nb:STO) substrate deposited bypulsed
laser deposition (PLD), focusing on the buried interface
using Polarized Neutron Reflectometry(PNR), X-ray Magnetic
Circular Dichroism (XMCD), and X-ray Reflectometry (XRR).Our
study utilizes XRR to assess the structural properties,
including roughness and density variations,across the
interface. PNR is employed to probe the magnetic depth
profile. The combinationof these techniques reveals a 1 unit
cell (u.c.) γ-Fe2O3 interlayer between the Fe3O4 thin film
andthe Nb:STO substrate and a 2 u.c. γ-Fe2O3 surface layer.
XMCD provides element-specific magneticinformation
throughout the entire system, confirming the total thickness
of γ-Fe2O3 to be 3u.c.The results reveal significant
modifications in the magnetic and structural properties at
the buriedinterface, driven by interactions between the
Fe3O4 film and the TiO2-Nb:STO substrate. Specifically,the
presence of the γ-Fe2O3 interlayer and surface layer
affects the magnetic coupling of thesystem.},
month = {Oct},
date = {2024-10-08},
organization = {JCNS Workshop 2024, Trends and
Perspectives in Neutron Scattering:
Functional Interfaces, Evangelische
Akademie Tutzing (Germany), 8 Oct 2024
- 11 Oct 2024},
subtyp = {Invited},
cin = {JCNS-2 / JARA-FIT},
cid = {I:(DE-Juel1)JCNS-2-20110106 / $I:(DE-82)080009_20140620$},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/1031779},
}