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@INPROCEEDINGS{Singh:1047032,
      author       = {Singh, Ankita and Bednarski-Meinke, C. and Kentzinger, E.
                      and de Oliveira Lima, V. A.},
      title        = {{M}agnetic and {T}ransport {S}ignatures of {S}train in
                      {S}r{R}u{O}3 {T}hin {F}ilms:{I}nsights from {STO} and
                      {S}i-{B}ased {S}ubstrates},
      reportid     = {FZJ-2025-04083},
      year         = {2025},
      abstract     = {SrRuO3 (SRO), a widely studied ferromagnetic metallic
                      perovskite oxide, exhibits perpendicular magneticanisotropy
                      (PMA) when subjected to appropriate strain conditions. Its
                      excellent lattice matchingwith SrTiO3 (STO) enables nearly
                      perfect epitaxial growth, making it an ideal platform for
                      investigatingstrain-induced effects in functional oxide
                      systems [1]. Although strain-tuned ferromagnetismhas been
                      examined in several perovskite heterostructures, the
                      influence of strain on the magneticanisotropy and transport
                      behavior of SRO remains an ongoing research focus. The
                      anomalous Halleffect (AHE) in SRO displays non-traditional
                      characteristics that are highly sensitive to strain,
                      filmthickness, and elemental doping, warranting further
                      studies on how epitaxial strain modulates itselectronic and
                      magnetic responses. To delve deeper into these phenomena,
                      ~20 nm SRO thin filmswere fabricated using high oxygen
                      pressure sputtering (HOPS) on TiO₂-terminated STO (001)
                      singlecrystals and on STO-buffered (4 nm) Si (001)
                      substrates, under identical deposition conditions.
                      X-raydiffraction (XRD) confirmed epitaxial growth, and X-ray
                      reflectivity (XRR) provided precise informationof film
                      thickness and interfacial roughness. Magnetization studies
                      indicated a Curie temperature(Tc) of 155 K for both film
                      types but revealed contrasting magnetic anisotropies. The
                      SRO/STO filmdemonstrated a stronger out-of-plane magnetic
                      component, whereas the SRO/STO/Si film favored
                      inplanemagnetization. This directional dependence was
                      further reflected in magnetoresistance $(MR\%)measurements,$
                      which peaked when the magnetic field aligns with each
                      sample’s easy axis. Notably,AHE results for the SRO/STO/Si
                      film showed an anomalous peak, potentially arising from
                      Ru-sitevacancies [2], implying the coexistence of multiple
                      magnetic contributions within the film. Theseresults
                      highlight the pivotal influence of epitaxial strain in
                      controlling both the magnetic orientationand electronic
                      transport properties in SRO-based heterostructures. To
                      further unravel the role of theSTO buffer layer in
                      modulating interfacial magnetism, we plan to conduct
                      detailed polarized neutronreflectometry (PNR) measurements
                      on SRO films grown on STO-buffered Si and single-crystal
                      STOsubstrates. These experiments, scheduled for October 2025
                      at the Spallation Neutron Source (SNS),ORNL, USA, will offer
                      deeper insights into strain-driven magnetic phenomena at the
                      atomic scalein complex oxide systems.},
      month         = {Oct},
      date          = {2025-10-07},
      organization  = {JCNS Workshop 2025, Trends and
                       Perspectives in Neutron Scattering.
                       Quantum Materials: Theory and
                       Experiments, Evangelische Akademie
                       Tutzing (Germany), 7 Oct 2025 - 9 Oct
                       2025},
      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/1047032},
}