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Pulsed laser deposition (PLD) was employed to grow coherent NaNbO3 thin films on several lattice matched substrates. Compressive (tensile) lattice strain was induced by the use of NdGaO3 and SrTiO3 (DyScO3 and TbScO3) single crystals. Deposition from a stoichiometric target at a 5 Pa O2 pressure was found to result in sodium and oxygen deficient films. By increasing the oxygen background pressure up to 200 Pa the oxygen and sodium concentrations in films on all substrates could be increased. As an alternative way to enhance the compositional ordering in the films sodium excess ceramics were used as PLD targets. With a Na/Nb ratio up to 1.17, phase pure, well-ordered films with smooth surfaces were grown on all substrates. The film composition was found to have a crucial impact on the formation of ferroelectric domains in tensilely strained films on DyScO3 substrates. Regularly arranged ferroelectric stripe domains were obtained at an oxygen partial pressure of 5 Pa using sodium rich growth parameters via the application of a 1.17 Na/Nb ratio PLD target.

Titel:	Strained ferroelectric NaNbO3 thin films: Impact of pulsed laser deposition growth conditions on structural properties
Autor/in / Beteiligte Person:	SELLMANN, Jan ; SCHWARZKOPF, Jutta ; KWASNIEWSKI, Albert ; SCHMIDBAUER, Martin ; BRAUN, Dorothee ; DUK, Andreas
Link:	E-Journal im Bestand der UB Hagen? View record from PASCAL Archive
Zeitschrift:	Thin solid films, Jg. 570 (2014), S. 107-113
Veröffentlichung:	Amsterdam: Elsevier, 2014
Medientyp:	academicJournal
Umfang:	print, 54 ref a
ISSN:	0040-6090 (print)
Schlagwort:	Crystallography Cristallographie cristallogenèse Metallurgy, welding Métallurgie, soudage Condensed state physics Physique de l'état condensé Sciences exactes et technologie Exact sciences and technology Physique Physics Etat condense: structure, proprietes mecaniques et thermiques Condensed matter: structure, mechanical and thermal properties Surfaces et interfaces; couches minces et trichites (structure et propriétés non électroniques) Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) Structure et morphologie de couches minces Thin film structure and morphology Composition et identification des phases Composition and phase identification Etat condense: structure electronique, proprietes electriques, magnetiques et optiques Condensed matter: electronic structure, electrical, magnetic, and optical properties Propriétés et matériaux diélectriques, piézoélectriques et ferroélectriques Dielectrics, piezoelectrics, and ferroelectrics and their properties Couches minces diélectriques Dielectric thin films Domaines interdisciplinaires: science des materiaux; rheologie Cross-disciplinary physics: materials science; rheology Science des matériaux Materials science Méthodes de dépôt de films et de revêtements; croissance de films et épitaxie Methods of deposition of films and coatings; film growth and epitaxy Théorie et modèles de la croissance de films Theory and models of film growth Dépôt par faisceau laser Laser deposition Composition phase Phase composition Composición fase Condition opératoire Operating conditions Condición operatoria Contrainte traction Tensile stress Tensión traccíon Couche mince ferroélectrique Ferroelectric thin films Couche mince Thin films Domaine ferroélectrique Ferroelectric domain Dominio ferroeléctrico Dépôt laser pulsé Pulsed laser deposition Effet contrainte Stress effects Etat surface Surface states Monocristal Monocrystals Mécanisme croissance Growth mechanism Mecanismo crecimiento Méthode ablation laser Laser ablation technique Niobate de sodium Sodium niobates Pression partielle Partial pressure Relation ordre Ordering Relación orden Sodium Stoechiométrie Stoichiometry Transformation ordre désordre Order-disorder transformations 6855A 6855N 8115F DyScO3 NaNbO3 NdGaO3 SrTiO3 Ferroelectric domains Piezoresponse force microscopy Sodium niobate Strain Structural properties Time: 7755
Sonstiges:	Nachgewiesen in: PASCAL Archive Sprachen: English Original Material: INIST-CNRS Document Type: Article File Description: text Language: English Author Affiliations: Leibniz-Institute for Crystal Growth, Max-Born-Str. 2, 12489 Berlin, Germany Rights: Copyright 2015 INIST-CNRS ; CC BY 4.0 ; Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS Notes: Physics and materials science ; Physics of condensed state: electronic structure, electrical, magnetic and optical properties ; Physics of condensed state: structure, mechanical and thermal properties

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Strained ferroelectric NaNbO3 thin films: Impact of pulsed laser deposition growth conditions on structural properties