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Low-Temperature Synthesis and Thermodynamic and Electrical Properties of Barium Titanate Nanorods
Joint Authors
Maxim, Florentina
Berger, Daniela
Teodorescu, Florina
Hornoiu, Cristian
Lete, Cecilia
Tanasescu, Speranta
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-04-05
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Studies regarding the morphology dependence of the perovskite-type oxides functional materials properties are of recent interest.
With this aim, nanorods (NRs) and nanocubes (NCs) of barium titanate (BaTiO3) have been successfully synthesized via a hydrothermal route at temperature as low as 408 K, employing barium acetate, titanium isopropoxide, and sodium hydroxide as reagents without any surfactant or template.
Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray powder diffraction (XRD), used for the morphology and structure analyses, showed that the NRs were formed by an oriented attachment of the NCs building-blocks with 20 nm average crystallites size.
The thermodynamic properties represented by the relative partial molar free energies, enthalpies, and entropies of the oxygen dissolution in the perovskite phase, as well as the equilibrium partial pressure of oxygen, indicated that NRs powders have lower oxygen vacancies concentration than the NCs.
This NRs characteristic, together with higher tetragonallity of the structure, leads to the enhancement of the dielectric properties of BaTiO3 ceramics.
The results presented in this work show indubitably the importance of the nanopowders morphology on the material properties.
American Psychological Association (APA)
Maxim, Florentina& Berger, Daniela& Teodorescu, Florina& Hornoiu, Cristian& Lete, Cecilia& Tanasescu, Speranta. 2015. Low-Temperature Synthesis and Thermodynamic and Electrical Properties of Barium Titanate Nanorods. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1069353
Modern Language Association (MLA)
Maxim, Florentina…[et al.]. Low-Temperature Synthesis and Thermodynamic and Electrical Properties of Barium Titanate Nanorods. Journal of Nanomaterials No. 2015 (2015), pp.1-10.
https://search.emarefa.net/detail/BIM-1069353
American Medical Association (AMA)
Maxim, Florentina& Berger, Daniela& Teodorescu, Florina& Hornoiu, Cristian& Lete, Cecilia& Tanasescu, Speranta. Low-Temperature Synthesis and Thermodynamic and Electrical Properties of Barium Titanate Nanorods. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-10.
https://search.emarefa.net/detail/BIM-1069353
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1069353