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Ferroelectric Nanoceramics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (31 January 2020) | Viewed by 2569

Special Issue Editor


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Guest Editor
Department of Electrical Engineering, National Cheng Kung University, 1 University Rd., Tainan, Taiwan
Interests: electronic and ceramic materials/devices; surface acoustic wave devices; nano-optoelectric materials and display devices; nano-imprinting technology; organic light-emitting devices
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Special Issue Ferroelectric Nanoceramics aims to establish the scope of this new open access journal in dielectric, ferroelectric, piezoelectric, and pyroelectric minerals and materials, as well as their applications. The Special Issue is available online at: https://www.mdpi.com/journal/applsci/special_issues/Ferroelectric_Nanoceramics.

Dielectric

A dielectric is an electrical insulator that can be polarized by an applied electric field. When a dielectric is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor but only slightly shift from their average equilibrium positions causing dielectric polarization. A major focus of Ferroelectric Nanoceramics will be progress and innovation of dielectric materials and their applications.

Ferroelectric

A ferroelectric is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field. A major focus of ferroelectric will be introducing the recent developments and advantages of ferroelectric materials and their applications.

Piezoelectric

A piezoelectric is the electric charge that accumulates in certain solid materials in response to applied mechanical stress, which results from the linear electromechanical interaction between the mechanical and electrical states in crystalline materials with no inversion symmetry. A major focus of piezoelectric will be advances with respect to emerging industries and renewable energies.

Pyroelectric

A pyroelectric can be described as the ability of certain materials to generate a temporary voltage when they are heated or cooled. The change in temperature modifies the positions of the atoms slightly within the crystal structure, such that the polarization of the material changes. This polarization change gives rise to a voltage across the crystal. A major focus of pyroelectric will be improvements of pyroelectric materials and their applications.

Prof. Dr. Sheng-Yuan Chu
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Dielectric
  • Ferroelectric
  • Piezoelectric
  • Pyroelectric

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Published Papers (1 paper)

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Research

14 pages, 4471 KiB  
Article
The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers
by Vojislav V. Mitic, Goran Lazovic, Chun-An Lu, Vesna Paunovic, Ivana Radovic, Aleksandar Stajcic and Branislav Vlahovic
Appl. Sci. 2020, 10(10), 3485; https://doi.org/10.3390/app10103485 - 18 May 2020
Cited by 4 | Viewed by 2290
Abstract
The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature [...] Read more.
The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors. Full article
(This article belongs to the Special Issue Ferroelectric Nanoceramics)
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