dc.contributor.author
Shi, Xi
dc.contributor.author
Bai, Yang
dc.contributor.author
Wichmann, Christoph
dc.contributor.author
Moritz, Michael
dc.contributor.author
Kuhfuß, Michel
dc.contributor.author
Papp, Christian
dc.contributor.author
Khansur, Neamul H.
dc.date.accessioned
2024-04-08T08:08:19Z
dc.date.available
2024-04-08T08:08:19Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/42050
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-41775
dc.description.abstract
Recent research has found that by introducing A-site deficiency into Ba/Ni co-doped (K,Na)NbO3 ABO3-type perovskite, a beneficial interface for photoferroelectric applications is formed between the perovskite and tungsten bronze (TB) phases. To date, such an interface is formed only spontaneously, and the growth mechanism of the TB phase in the perovskite phase is unclear. This work investigates controlled interface formation using KNBNNO (K0.50Na0.44Ba0.04Ni0.02Nb0.98O2.98) annealed at different temperatures for different durations, and in various atmospheres. Structural, microstructural, and chemical analyses suggest that vacuum, N2, and O2 atmospheres promote the growth of the TB phase from the sample surface, of which the thickness increases with annealing temperature and duration. In contrast, annealing in air does not promote such growth due to lower evaporation of K and Na. Among all atmospheres, the growth starts the earliest, i.e., at 800 °C, in vacuum compared to that as late as 1000 °C in O2. The association of growth of the TB phase with the degree of alkali volatilization that is dependent on the atmosphere, and that with the resultant variation in diffusion rate, uncovers the formation mechanism of the beneficial interface that may also be applicable to other KNN-based materials for advanced photoferroelectric applications.
en
dc.format.extent
7 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
(K, Na)NbO3 perovskite
en
dc.subject
photoferroelectric applications
en
dc.subject
tetragonal tungsten bronze phase
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::540 Chemie::541 Physikalische Chemie
dc.title
Study on Growth of Tungsten Bronze Phase from Niobate Perovskite Ceramics in Controlled Atmosphere for Photoferroelectric Applications
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.articlenumber
2300601
dcterms.bibliographicCitation.doi
10.1002/aelm.202300601
dcterms.bibliographicCitation.journaltitle
Advanced Electronic Materials
dcterms.bibliographicCitation.number
3
dcterms.bibliographicCitation.volume
10
dcterms.bibliographicCitation.url
https://doi.org/10.1002/aelm.202300601
refubium.affiliation
Biologie, Chemie, Pharmazie
refubium.affiliation.other
Institut für Chemie und Biochemie
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
2199-160X
refubium.resourceType.provider
WoS-Alert