B-site ordering and strain-induced phase transition in double-perovskite La2NiMnO6 films
The magnetic and electrical properties of complex oxide thin films are closely related to the phase stability and cation ordering, which demands that we understand the process-structure-property relationships microscopically in functional materials research. Here we study multiferroic thin films of...
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Published in | Scientific reports Vol. 8; no. 1; pp. 1 - 9 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
06.02.2018
Nature Publishing Group |
Subjects | |
Online Access | Get full text |
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Summary: | The magnetic and electrical properties of complex oxide thin films are closely related to the phase stability and cation ordering, which demands that we understand the process-structure-property relationships microscopically in functional materials research. Here we study multiferroic thin films of double-perovskite La
2
NiMnO
6
epitaxially grown on SrTiO
3
, KTaO
3
, LaAlO
3
and DyScO
3
substrates by pulsed laser deposition. The effect of epitaxial strains imposed by the substrate on the microstructural properties of La
2
NiMnO
6
has been systematically investigated by means of advanced electron microscopy. It is found that La
2
NiMnO
6
films under tensile strain exhibit a monoclinic structure, while under compressive strain the crystal structure of La
2
NiMnO
6
films is rhombohedral. In addition, by optimizing the film deposition conditions a long-range ordering of B-site cations in La
2
NiMnO
6
films has been obtained in both monoclinic and rhombohedral phases. Our results not only provide a strategy for tailoring phase stability by strain engineering, but also shed light on tuning B-site ordering by controlling film growth temperature in double-perovskite La
2
NiMnO
6
films. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-018-20812-4 |