Atom probe tomography field evaporation characteristics and compositional corrections of ZrB2

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Engberg, David L. J.,1986-Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten (författare)

Atom probe tomography field evaporation characteristics and compositional corrections of ZrB2

Artikel/kapitelEngelska2019

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Elsevier BV,2019

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LIBRIS-ID:oai:research.chalmers.se:e98e7a21-aeb5-48bf-88f8-ac097ff36cfb
https://research.chalmers.se/publication/513018URI
https://doi.org/10.1016/j.matchar.2019.109871DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-160356URI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:ref swepub-contenttype

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The microstructure of stoichiometric ZrB2.0 and B over-stoichiometric ZrB2.5 thin films has been studied using atom probe tomography (APT), X-ray diffraction, and transmission electron microscopy. Both films consist of columnar ZrB2 grains with AlB2-type crystal structure. The narrow stoichiometry range of ZrB2 results in the presence of separate disordered B-rich boundaries even in ZrB2.0. At higher average B content, specifically ZrB2.5, the formation of a continuous network around the sides of the ZrB2 columns is promoted. In addition, the APT field evaporation characteristics of ZrB2 and its influence on the measured local composition has been studied and compared to the average composition from elastic recoil detection analysis (ERDA). Differences in the measured average compositions of the two techniques are explained by the APT detector dead-time/space. A new pile-up pairs correction procedure based on co-evaporation correlation data was thus employed here for the APT data and compared with the 10B-method (the B equivalence of the 13C-method), as well as the combination of both methods. In ZrB2.0, all of the applied compositional correction methods were found to reduce the compositional difference when appropriate isotopic abundances were used. In ZrB2.5, the inhomogeneity of the film likely increased the local APT composition to such an extent that even conservative correction procedures overestimated the B content compared to the ERDA reference. The strengths of the pile-up pairs correction compared the 10B and the combined methods are higher precision, due to it being less dependent on the accuracy of estimated isotopic abundances, and that the correction itself is not dependent on careful background correction of the mass spectrum.

Ämnesord och genrebeteckningar

NATURVETENSKAP Kemi Oorganisk kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Inorganic Chemistry hsv//eng
NATURVETENSKAP Kemi Materialkemi hsv//swe
NATURAL SCIENCES Chemical Sciences Materials Chemistry hsv//eng
NATURVETENSKAP Kemi Annan kemi hsv//swe
NATURAL SCIENCES Chemical Sciences Other Chemistry Topics hsv//eng
NATURVETENSKAP Fysik hsv//swe
NATURAL SCIENCES Physical Sciences hsv//eng
Field evaporation characteristics of borides
Transition metal diborides
Atom probe tomography (APT)
Elastic recoil detection analysis (ERDA)
Zirconium diboride (ZrB ) 2
Compositional correction procedures

Biuppslag (personer, institutioner, konferenser, titlar ...)

Tengdelius, Lina,1986-Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)linte49 (författare)
Högberg, Hans,1968-Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)hanho47 (författare)
Thuvander, Mattias,1968Chalmers tekniska högskola,Chalmers University of Technology,Department of Physics, Chalmers University of Technology, Göteborg, Sweden(Swepub:cth)matthu (författare)
Hultman, Lars,Professor,1960-Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten(Swepub:liu)larhu75 (författare)
Linköpings universitetTunnfilmsfysik (creator_code:org_t)

Sammanhörande titlar

Ingår i:Materials Characterization: Elsevier BV1561044-58031873-4189

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Av författaren/redakt...: Engberg, David L ...; Tengdelius, Lina ...; Högberg, Hans, 1 ...; Thuvander, Matti ...; Hultman, Lars, P ...

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NATURVETENSKAP: NATURVETENSKAP; och Kemi; och Oorganisk kemi

NATURVETENSKAP: NATURVETENSKAP; och Kemi; och Materialkemi

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NATURVETENSKAP: NATURVETENSKAP; och Fysik

Artiklar i publikationen: Materials Charac ...

Av lärosätet: Chalmers tekniska högskola; Linköpings universitet

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