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Advanced Ceramic Materials with Functional Properties

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced and Functional Ceramics and Glasses".

Deadline for manuscript submissions: closed (10 May 2023) | Viewed by 8292

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Prof. Dr. Dariusz Bochenek

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Institute of Materials Engineering, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1a, 41-500 Chorzów, Poland
Interests: perovskites; multiferroics; ceramic materials and ferroelectro-ferromagnetic composites; SEM tests; dielectric properties; ferroelectric properties
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Special Issue Information

Dear Colleagues,

The main objective of this Special Issue is to publish outstanding papers presenting advanced research in the field of ceramic materials and ceramic composites with functional properties and broad applications.

Articles from the following areas of modern material engineering are welcome in the issue: new methods and techniques in ceramic technology processes used to enhance the properties and broaden the application of ceramic materials; characterization of new ceramic materials, including ferroelectrics, piezoelectrics, piroelectrics, piezoelastics, multiferroics, ferroelectromagnetic composites, doped ceramic materials, materials with perovskite-type structure, lead-free materials, biomaterials, etc.

Works that present modern research on ceramic materials with functional properties are also welcome, e.g., X-ray examinations, electron microscopy (SEM, TEM, AFM, STM, etc.), spectroscopy (EDX, XRD, XRF, FTIR, XPS, etc.), dielectric tests, impedance spectroscopy, electromechanical tests, ferroelectric measurements, electrical conductivity tests, magnetic and magnetoelectric properties, etc.

It is my pleasure to invite you to submit a manuscript to this Special Issue. Full papers, communications, and reviews are all welcome.

Prof. Dr. Dariusz Bochenek
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 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

multiferroics
ferroelectromagnetic composites
lead-free ceramic materials
piezoelectrics
perovskites
structure and microstructure tests
electrophysic properties

Published Papers (6 papers)

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Editorial

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3 pages, 202 KiB

Open AccessEditorial

Advanced Ceramic Materials with Functional Properties

by Dariusz Bochenek

Materials 2022, 15(18), 6439; https://doi.org/10.3390/ma15186439 - 16 Sep 2022

Cited by 3 | Viewed by 1326

Abstract

With the dynamic progress in technology worldwide, the research into new engineering materials applies to a wide range of materials with exciting properties [...] Full article

(This article belongs to the Special Issue Advanced Ceramic Materials with Functional Properties)

Research

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34 pages, 11244 KiB

Open AccessArticle

Temperature and E-Poling Evolution of Structural, Vibrational, Dielectric, and Ferroelectric Properties of Ba_1−xSr_xTiO₃ Ceramics (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.45)

by Jan Suchanicz, Dorota Sitko, Krzysztof Stanuch, Konrad Świerczek, Grzegorz Jagło, Andrzej Kruk, Kamila Kluczewska-Chmielarz, Krzysztof Konieczny, Piotr Czaja, Jakub Aleksandrowicz, Wojciech Wieczorek, Justyna Grygierek, Mariusz Sokolowski, Grzegorz Stachowski, Maija Antonova and Andris Sternberg

Materials 2023, 16(18), 6316; https://doi.org/10.3390/ma16186316 - 20 Sep 2023

Cited by 2 | Viewed by 1033

Abstract

Lead-free Ba_1−xSr_xTiO₃ (BST) (x = 0, 0.1, 0.2, 0.3, 0.4 and 0.45) ceramics were successfully prepared via the solid-state reaction route. A pure perovskite crystalline structure was identified for all compositions by X-ray diffraction analysis. The basic phase transition temperatures in these ceramics were studied over a wide temperature range. A change in symmetry from a tetragonal to cubic phase was detected, which was further proven by phonon anomalies in composition/temperature-dependent Raman spectra. The incorporation of Sr²⁺ into BaTiO₃ (BT) lead to a shift in the phase transitions to lower temperatures, suppressing the ferroelectric properties and inducing relaxor-like behavior. Therefore, it was reasonable to suppose that the materials progressively lack long-range ordering. The initial second-harmonic generation (SHG) measurements demonstrated that the cubic phase of BST ceramics is not purely centrosymmetric over a wide temperature interval. We discussed the possible origin of the observed effects, and showed that electric field poling seems to reconstruct the structural ordering destroyed by the introduction of Sr²⁺ to BT. In the first approximation, substitution of Sr for larger Ba simply reduced the space for the off-central shift in Ti in the lattice and hence the domain polarization. A-site cation ordering in BST and its influence on the density of electronic states were also explored. The effect of doping with strontium ions in the BST compound on the density of electronic states was investigated using ab initio methods. As the calculations showed, doping BT with Sr²⁺ atoms led to an increase in the bandgap. The proposed calculations will also be used in the subsequent search for materials optimal for applications in photovoltaics. Full article

(This article belongs to the Special Issue Advanced Ceramic Materials with Functional Properties)

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17 pages, 9093 KiB

Open AccessArticle

Electric and Magnetic Properties of the Multiferroic Composites Made Based on Pb(Fe_1/2Nb_1/2)_1−xMn_xO₃ and the Nickel-Zinc Ferrite

by Dariusz Bochenek, Artur Chrobak and Grzegorz Ziółkowski

Materials 2023, 16(10), 3785; https://doi.org/10.3390/ma16103785 - 17 May 2023

Cited by 1 | Viewed by 4585

Abstract

This work presents the electrophysical properties of the multiferroic ceramic composites obtained as a result of combining both magnetic and ferroelectric material. The ferroelectric components of the composite are materials with the following chemical formulas: PbFe_0.5Nb_0.5O₃ (PFN), Pb(Fe_0.495Nb_0.495Mn_0.01)O₃ (PFNM₁), and Pb(Fe_0.49Nb_0.49Mn_0.02)O₃ (PFNM₂), while the magnetic component of the composite is the nickel-zinc ferrite (Ni_0.64Zn_0.36Fe₂O₄ marked as F). The crystal structure, microstructure, DC electric conductivity, and ferroelectric, dielectric, magnetic, and piezoelectric properties of the multiferroic composites are performed. The conducted tests confirm that the composite samples have good dielectric and magnetic properties at room temperature. Multiferroic ceramic composites have a two-phase crystal structure (ferroelectric from a tetragonal system and magnetic from a spinel structure) without a foreign phase. Composites with an admixture of manganese have a better set of functional parameters. The manganese admixture increases the microstructure’s homogeneity, improves the magnetic properties, and reduces the electrical conductivity of composite samples. On the other hand, in the case of electric permittivity, a decrease in the maximum values of ε_m is observed with an increase in the amount of manganese in the ferroelectric component of composite compositions. However, the dielectric dispersion at high temperatures (associated with high conductivity) disappears. Full article

(This article belongs to the Special Issue Advanced Ceramic Materials with Functional Properties)

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16 pages, 17690 KiB

Open AccessArticle

Microwave Electrodynamic Study on Antiferroelectric Materials in a Wide Temperature Range

by Pavel Astafev, Aleksey Pavelko, Konstantin Andryushin, Alexander Lerer, Jakov Reizenkind and Larisa Reznichenko

Materials 2022, 15(24), 8834; https://doi.org/10.3390/ma15248834 - 10 Dec 2022

Cited by 1 | Viewed by 713

Abstract

The electrodynamic properties of lead zirconate titanate ceramic solid solutions, exhibiting ferro-antiferroelectric phase transition, are investigated at microwave frequencies in a wide temperature range. Significant changes in the electrodynamic response are found, presumably associated with structural rearrangements accompanying the sequence of phase transitions between para-, ferro-, and antiferroelectric states. The phenomena observed in the experiments are considered under conditions of changing temperature and concentrations of the components; several independent measurement techniques were used for their unambiguous identification. Full article

(This article belongs to the Special Issue Advanced Ceramic Materials with Functional Properties)

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12 pages, 4365 KiB

Open AccessArticle

Effects of Y₂O₃ and LiAl₅O₈ on the Microstructure and Optical Properties of Reactively Sintered AlON Based Transparent Ceramics

by Guojian Yang, Peng Sun, Yuezhong Wang, Zitao Shi, Qingwei Yan, Shasha Li, Guoyong Yang, Ke Yang, Shijie Dun, Peng Shang, Lifen Deng, He Li and Nan Jiang

Materials 2022, 15(22), 8036; https://doi.org/10.3390/ma15228036 - 14 Nov 2022

Cited by 1 | Viewed by 1350

Abstract

Sintering aid was very crucial to influence the microstructure and thus the optical property of the sintered optical ceramics. The purpose of this work was to explain the difference between the sintering aids of Li⁺ and Y³⁺ on Al₂₃O₂₇N₅ (AlON) ceramic via reaction sintering method. The effects of LiAl₅O₈ (LA) and Y₂O₃ on the sintering of Al₂O₃–AlN system were carefully compared, in terms of X-ray diffraction (XRD), microstructure, density, X-ray photoelectron spectroscopy (XPS) and optical transmittance. According to the XPS and XRD lattice analysis, the chemical structure of the materials was not obviously affected by different dopants. We firstly reported that, there was obvious volume expansion in the Y³⁺ dopped AlON ceramics, which was responsible for the low transparency of the ceramics. Obvious enhancements were achieved using Li⁺ aids from the results that Li: AlONs showing a higher transparency and less optical defects. A higher LA content (20 wt%) was effective to remove pores and thus obtain a higher transmittance (~86.8% at ~3.5 μm). Thus, pores were the main contributions to the property difference between the dopant samples. The importance of sintering aids should be carefully realized for the reaction sintering fabrication of AlON based ceramics towards high transparency. Full article

(This article belongs to the Special Issue Advanced Ceramic Materials with Functional Properties)

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Review

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59 pages, 17084 KiB

Open AccessReview

Effects of Dopants and Processing Parameters on the Properties of ZnO-V₂O₅-Based Varistors Prepared by Powder Metallurgy: A Review

by Magdalena Valentina Lungu

Materials 2023, 16(10), 3725; https://doi.org/10.3390/ma16103725 - 14 May 2023

Cited by 3 | Viewed by 1780

Abstract

This article reviews the progress in developing ZnO-V₂O₅-based metal oxide varistors (MOVs) using powder metallurgy (PM) techniques. The aim is to create new, advanced ceramic materials for MOVs with comparable or superior functional properties to ZnO-Bi₂O₃ varistors using fewer dopants. The survey emphasizes the importance of a homogeneous microstructure and desirable varistor properties, such as high nonlinearity (α), low leakage current density (J_L), high energy absorption capability, reduced power loss, and stability for reliable MOVs. This study investigates the effect of V₂O₅ and MO additives on the microstructure, electrical and dielectric properties, and aging behavior of ZnO-based varistors. The findings show that MOVs with 0.25–2 mol.% V₂O₅ and MO additives sintered in air over 800 °C contain a primary phase of ZnO with a hexagonal wurtzite structure and several secondary phases that impact the MOV performance. The MO additives, such as Bi₂O₃, In₂O₃, Sb₂O₃, transition element oxides, and rare earth oxides, act as ZnO grain growth inhibitors and enhance the density, microstructure homogeneity, and nonlinearity. Refinement of the microstructure of MOVs and consolidation under appropriate PM conditions improve their electrical properties (J_L ≤ 0.2 mA/cm², α of 22–153) and stability. The review recommends further developing and investigating large-sized MOVs from the ZnO-V₂O₅ systems using these techniques. Full article

(This article belongs to the Special Issue Advanced Ceramic Materials with Functional Properties)

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