Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/113452
Título: | Influence of the Preparation Method on the Structural, Morphological and Dielectric Properties of FeNbO4 Ceramics | Autor: | Devesa, Susana Gonçalves, Filipa Graça, Manuel |
Palavras-chave: | FeNbO4; colloidal gel; microwaves; polymeric gel; radiofrequency; rietveld refinement | Data: | 18-Abr-2023 | Editora: | MDPI | Projeto: | LA/P/0037/2020 UIDP/50025/2020 info:eu-repo/grantAgreement/UIDB/50025/2020 |
Título da revista, periódico, livro ou evento: | Materials | Volume: | 16 | Número: | 8 | Resumo: | In this work, iron niobate (FeNbO4) was prepared via two processes based on the sol-gel method: colloidal gel and polymeric gel. The obtained powders were submitted to heat treatments at different temperatures based on the results obtained via differential thermal analysis. The structures of the prepared samples were characterized via X-ray diffraction and the morphology was characterized via scanning electron microscopy. The dielectric measurements were performed in the radiofrequency region using the impedance spectroscopy technique and in the microwave range using the resonant cavity method. The influence of the preparation method was noticeable in the structural, morphological and dielectric properties of the studied samples. The polymeric gel method promoted the formation of monoclinic and orthorhombic iron niobate at lower temperatures. The differences in the samples' morphology were also remarkable, both in the size and shape of the grains. The dielectric characterization revealed that the dielectric constant and the dielectric losses had the same order of magnitude and similar trends. A relaxation mechanism was identified in all the samples. | URI: | https://hdl.handle.net/10316/113452 | ISSN: | 1996-1944 | DOI: | 10.3390/ma16083202 | Direitos: | openAccess |
Aparece nas coleções: | I&D CFis - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Influence-of-the-Preparation-Method-on-the-Structural-Morphological-and-Dielectric-Properties-of-FeNbOsub4sub-CeramicsMaterials.pdf | 7.66 MB | Adobe PDF | Ver/Abrir |
Citações SCOPUSTM
5
Visto em 29/jul/2024
Citações WEB OF SCIENCETM
4
Visto em 2/ago/2024
Visualizações de página
52
Visto em 31/jul/2024
Downloads
36
Visto em 31/jul/2024
Google ScholarTM
Verificar
Altmetric
Altmetric
Este registo está protegido por Licença Creative Commons