Characterization of Fe nanoparticles on SrTiO3 (001) using X-ray photoelectron diffraction (XPD)

IF 3.8 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-03-24 DOI:10.1016/j.vacuum.2025.114281

Yosef S.A. Medeiros , Abner de Siervo , Richard Landers , Pedro A.P. Nascente , Enrique P.U. Otero , Tyson Back , Alexandre Pancotti

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引用次数: 0

Abstract

The perovskite ceramic strontium titanate (SrTiO₃ or STO) presents remarkable properties that make it very promising for catalytic, photocatalytic, electronic, magnetic, and spintronic applications. The bulk SrTiO₃ crystal consists of alternating TiO₂ and SrO layers along the (001) direction, with surfaces terminated by either layer. The deposition of Fe on SrTiO₃ (001) can provide Fe nanoparticles of interest for various applications. Adequate characterization of the properties and structures of these nanoparticles and substrate is essential. In this work, the formation and structure of Fe nanoparticles grown on SrTiO₃ (001) (√5 × √5)R26.6° surface were characterized by low energy electron diffraction (LEED) and X-ray photoelectron diffraction (XPD). The comparison between experimental and theoretical XPD results involving multiple scattering calculations indicates a coexistence of Fe nanoparticles in both bcc and fcc structures.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.