Journal Article

FZJ-2021-03293

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Unexpected precipitates in conjunction with layer-by-layer growth in Mn-enriched La2/3Sr1/3MnO3 thin films

Steffen, A. ; Glavic, A. (Corresponding author) ; Gutberlet, T.FZJ* ; Ambaye, H. ; Schubert, J.FZJ* ; Geprägs, S. ; Barthel, J.FZJ* ; Mattauch, S.FZJ* ; Zander, W. ; Kruth, M.FZJ* ; Schöffmann, P.FZJ* ; Pütter, S.FZJ* ; Brückel, T.FZJ*

2021
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/28563  doi:10.1016/j.tsf.2021.138862

Abstract: In recent years, layer-by-layer heteroepitaxy has become a versatile tool for depositing novel materials notaccessible in bulk form. While it is possible to control the mono layer sequence on an atomic scale with the helpof sophisticated analysis techniques, not all important features of the thin film growth are detectable. We reporton a detailed analysis of layer-by-layer deposited Mn-enriched La$_{2/3}$Sr$_{1/3}$MnO$_3$ thin films using various, complementary experimental techniques. Our results show that, contrary to the expectations from the growth parameters and initial characterization, the films did not grow as atomic planes but segregated into layers ofLa$_{2/3}$Sr$_{1/3}$MnO$_{3}$ with additional embedded precipitant crystals. We attribute this separation to a Volmer-Weberisland-like growth of Mn$_3$O$_4$ crystals within layers of La$_{2/3}$Sr$_{1/3}$MnO$_3$ due to increased surface tension inhibiting La and Sr oxides from sticking to nucleated Mn3O4 surfaces during the growth at high temperatures.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd) ; Condensed Matter Physics (2nd)

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Contributing Institute(s):

1. JCNS-4 (JCNS-4)
2. Streumethoden (JCNS-2)
3. Streumethoden (PGI-4)
4. JARA-FIT (JARA-FIT)
5. High Brilliance Source (JCNS-HBS)
6. Halbleiter-Nanoelektronik (PGI-9)
7. Materialwissenschaft u. Werkstofftechnik (ER-C-2)
8. Physik Nanoskaliger Systeme (ER-C-1)
9. JCNS-FRM-II (JCNS-FRM-II)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)

Experiment(s):

1. MBE-MLZ: Molecular Beam Epitaxy at MLZ
2. MARIA: Magnetic reflectometer with high incident angle (NL5N)

Appears in the scientific report 2021

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Database coverage:
; ; ; BIOSIS Previews ; Biological Abstracts ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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