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

IF 3.9 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

{"title":"Characterization of Fe nanoparticles on SrTiO3 (001) using X-ray photoelectron diffraction (XPD)","authors":"Yosef S.A. Medeiros , Abner de Siervo , Richard Landers , Pedro A.P. Nascente , Enrique P.U. Otero , Tyson Back , Alexandre Pancotti","doi":"10.1016/j.vacuum.2025.114281","DOIUrl":null,"url":null,"abstract":"<div><div>The perovskite ceramic strontium titanate (SrTiO<sub>3</sub> or STO) presents remarkable properties that make it very promising for catalytic, photocatalytic, electronic, magnetic, and spintronic applications. The bulk SrTiO<sub>3</sub> crystal consists of alternating TiO<sub>2</sub> and SrO layers along the (001) direction, with surfaces terminated by either layer. The deposition of Fe on SrTiO<sub>3</sub> (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 SrTiO<sub>3</sub> (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.</div></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":"238 ","pages":"Article 114281"},"PeriodicalIF":3.9000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vacuum","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0042207X25002714","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

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.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

SrTiO3（001）表面铁纳米颗粒的x射线光电子衍射（XPD）表征

钙钛矿陶瓷钛酸锶（SrTiO3或STO）表现出非凡的性能，使其在催化，光催化，电子，磁性和自旋电子应用方面非常有前景。大块SrTiO3晶体由沿（001）方向交替的TiO2和SrO层组成，表面由任一层终止。在SrTiO3（001）上沉积铁可以提供各种应用感兴趣的铁纳米颗粒。充分表征这些纳米颗粒和衬底的性质和结构是必不可少的。利用低能电子衍射（LEED）和x射线光电子衍射（XPD）表征了在SrTiO3(001)(√5 ×√5)R26.6°表面生长的Fe纳米颗粒的形成和结构。经过多次散射计算的XPD实验结果与理论结果的比较表明，铁纳米粒子在bcc和fcc结构中共存。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

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.