Journal ArticleDOI
Thickness and temperature dependent electrical characteristics of crystalline BaxSr1−xTiO3 thin films
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TLDR
In this article, polycrystalline Ba1−xSrxTiO3 (BST) thin films with three different compositions have been deposited by radiofrequency magnetron sputtering technique on platinum coated silicon substrates.Abstract:
Polycrystalline Ba1−xSrxTiO3 (BST) thin films with three different compositions have been deposited by radio-frequency magnetron sputtering technique on platinum coated silicon substrates. Samples with buffer and barrier layers for different film thicknesses and processing temperatures have been studied. Crystallite size of BST films has been found to increase with increasing substrate temperature. Thickness dependent dielectric constant has been studied and discussed in the light of an interfacial dead layer and the finite screening length of the electrode. Ferroelectric properties of the films have also been studied for various deposition conditions. The electrical resistivity of the films measured at different temperatures shows a positive temperature coefficient of resistance under a constant bias voltage.read more
Citations
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Journal ArticleDOI
Scaling Effects in Perovskite Ferroelectrics: Fundamental Limits and Process‐Structure‐Property Relations
Jon F. Ihlefeld,D. T. Harris,Ryan Keech,Jacob L. Jones,Jon Paul Maria,Susan Trolier-McKinstry +5 more
TL;DR: In this article, the intrinsic limits of ferroelectric response, the roles of electrical and mechanical boundary conditions, grain size and thickness effects, and extraneous effects related to processing are reviewed.
Journal ArticleDOI
Hot sputtering of barium strontium titanate on nickel foils
TL;DR: In this paper, the relationship linking temperature and voltage dependent dielectric response, grain size, and thermal budget during synthesis is illustrated, and it is found that maximizing thermal budgets within experimental bounds leads to electrical properties comparable to the best literature reports irrespective of the processing technique or microstructure.
Journal ArticleDOI
Systematic investigation of the annealing temperature and composition effects on the dielectric properties of sol–gel BaxSr1−xTiO3 thin films
Delphin Levasseur,Delphin Levasseur,Heba Badr El-Din El-Shaarawi,Sébastien Pacchini,A. Rousseau,Sandrine Payan,Guillaume Guegan,Mario Maglione +7 more
TL;DR: In this paper, a systematic study of the structure, microstructure and dielectric properties has been achieved for each composition and a systematic effect of post-deposition annealing temperature and composition is reported.
Journal ArticleDOI
Effect of Pt bottom electrode texture selection on the tetragonality and physical properties of Ba0.8Sr0.2TiO3 thin films produced by pulsed laser deposition
José Silva,Koppole C. Sekhar,Angela Maria de Oliveira Almeida,J. Agostinho Moreira,Javier Martín-Sánchez,Mário Pereira,A. Khodorov,M. J. M. Gomes +7 more
TL;DR: In this article, the effect of bottom electrode texture on the tetragonality, dielectric, ferroelectric, and polarization switching response of pulsed laser deposited Ba0.8Sr0.2TiO3 (BST) thin films has been studied.
Journal ArticleDOI
Effects of interface on the dielectric properties of Ba0.6Sr0.4TiO3 thin film capacitors
TL;DR: In this article, high-resolution transmission electron microscopy (HRTEM) observation showed that there is a transition layer at BST/Pt interface, and the layer is about 7-8nm thickness.
References
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Journal ArticleDOI
Ferroelectric materials for microwave tunable applications
TL;DR: A review of the properties of ferroelectric materials that are relevant to microwave tunable devices is presented in this article, where the theory of dielectric response of tunable bulk materials and thin films is discussed.
Journal ArticleDOI
Size effect on the ferroelectric phase transition in PbTiO3 ultrafine particles.
TL;DR: A size effect on the ferroelectric phase transition in ultrafine particles is reported, when the particle size is less than 50 nm, and the transition temperature decreases from its bulk value as the size decreases.
Journal ArticleDOI
The Properties of Ferroelectric Films at Small Dimensions
TL;DR: A review of the literature on size effects in ferroelectric materials, with an emphasis on thin film perovskite ferroelectrics, can be found in this paper.
Journal ArticleDOI
Depolarization fields in thin ferroelectric films
TL;DR: In this article, a mechanism was proposed to explain depolarization phenomena in thin ferroelectric films and related multilayer devices, where the center of gravity of this charge and the free compensation charge are not coincident.
Journal ArticleDOI
The dielectric response as a function of temperature and film thickness of fiber-textured (Ba,Sr)TiO3 thin films grown by chemical vapor deposition
TL;DR: The temperature and field-dependent permittivities of fiber-textured Ba0.7Sr0.3TiO3 thin films grown by liquid-source metalorganic chemical vapor deposition were investigated as a function of film thickness as discussed by the authors.