Hematite α-Fe2O3(0001) in top and side view: resolving long-standing controversies about its surface structure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00583874" target="_blank" >RIV/68378271:_____/23:00583874 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/23:10477102

Výsledek na webu

<a href="https://hdl.handle.net/11104/0351870" target="_blank" >https://hdl.handle.net/11104/0351870</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/admi.202300602" target="_blank" >10.1002/admi.202300602</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hematite α-Fe2O3(0001) in top and side view: resolving long-standing controversies about its surface structure

Popis výsledku v původním jazyce

The atomic-scale structure of the hematite surface remains controversial despite decades of study, partly because it depends on sample history as well as the preparation conditions. Here, a comprehensive study is performed using an arsenal of surface techniques (non-contact atomic force microscopy, scanning tunneling microscopy, low-energy electron diffraction, and X-ray photoemission spectroscopy) complemented by analyses of the near surface region by high-resolution transmission electron microscopy and electron energy loss spectroscopy. The results show that the so-called “bi-phase” termination forms even under highly oxidizing conditions, a (1 × 1) surface is only observed in the presence of impurities. Furthermore, it is shown that the biphase is actually a continuous layer distorted due to a mismatch with the subsurface layers, and thus not the proposed mixture of FeO(111) and α-Fe2O3(0001) phases.

Název v anglickém jazyce

Hematite α-Fe2O3(0001) in top and side view: resolving long-standing controversies about its surface structure

Popis výsledku anglicky

The atomic-scale structure of the hematite surface remains controversial despite decades of study, partly because it depends on sample history as well as the preparation conditions. Here, a comprehensive study is performed using an arsenal of surface techniques (non-contact atomic force microscopy, scanning tunneling microscopy, low-energy electron diffraction, and X-ray photoemission spectroscopy) complemented by analyses of the near surface region by high-resolution transmission electron microscopy and electron energy loss spectroscopy. The results show that the so-called “bi-phase” termination forms even under highly oxidizing conditions, a (1 × 1) surface is only observed in the presence of impurities. Furthermore, it is shown that the biphase is actually a continuous layer distorted due to a mismatch with the subsurface layers, and thus not the proposed mixture of FeO(111) and α-Fe2O3(0001) phases.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advanced Materials Interfaces

ISSN

2196-7350

e-ISSN

2196-7350

Svazek periodika

10

Číslo periodika v rámci svazku

32

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

2300602

Kód UT WoS článku

001159240100001

EID výsledku v databázi Scopus

2-s2.0-85168394306