Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous Ceramics
The present paper reports the dependence of dielectric, ferroelectric and piezoelectric properties on the porosity level in BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> ceramics with porosity from 5% to 21%. Microporosity with 0–3 connectivity has been produc...
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MDPI AG
2020-07-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/15/3324 |
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| author | Lavinia Curecheriu Vlad Alexandru Lukacs Leontin Padurariu George Stoian Cristina Elena Ciomaga |
| author_facet | Lavinia Curecheriu Vlad Alexandru Lukacs Leontin Padurariu George Stoian Cristina Elena Ciomaga |
| author_sort | Lavinia Curecheriu |
| collection | DOAJ |
| description | The present paper reports the dependence of dielectric, ferroelectric and piezoelectric properties on the porosity level in BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> ceramics with porosity from 5% to 21%. Microporosity with 0–3 connectivity has been produced using PMMA microspheres as a sacrificial template. The functional properties (dielectric, ferroelectric and piezoelectric effect) are mostly affected by the “dilution effect”: permittivity decreases by 40% when porosity increases by 21%, and P<sub>max</sub> decreases from 13 to 5 µC/cm<sup>2</sup> while the P<sub>rem</sub> is in the range of (2–8) µC/cm<sup>2</sup>. However, the reduction of the zero-field permittivity and hysteretic behaviour of ε(E) while the tunability level is still high makes from porous ceramics interesting materials for tunability application. |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T18:12:32Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-e63b0ca111fc434fa0350376ea0131c82023-11-20T08:01:02ZengMDPI AGMaterials1996-19442020-07-011315332410.3390/ma13153324Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous CeramicsLavinia Curecheriu0Vlad Alexandru Lukacs1Leontin Padurariu2George Stoian3Cristina Elena Ciomaga4Dielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Alexandru Ioan Cuza University, 11 Carol I Blvd., 700506 Iasi, RomaniaDielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Alexandru Ioan Cuza University, 11 Carol I Blvd., 700506 Iasi, RomaniaDielectrics, Ferroelectrics & Multiferroics Group, Faculty of Physics, Alexandru Ioan Cuza University, 11 Carol I Blvd., 700506 Iasi, RomaniaNational Institute of Research and Development for Technical Physics, 700050 Iasi, RomaniaResearch Department, Faculty of Physics, Alexandru Ioan Cuza University, 11 Carol I Blvd., 700506 Iasi, RomaniaThe present paper reports the dependence of dielectric, ferroelectric and piezoelectric properties on the porosity level in BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> ceramics with porosity from 5% to 21%. Microporosity with 0–3 connectivity has been produced using PMMA microspheres as a sacrificial template. The functional properties (dielectric, ferroelectric and piezoelectric effect) are mostly affected by the “dilution effect”: permittivity decreases by 40% when porosity increases by 21%, and P<sub>max</sub> decreases from 13 to 5 µC/cm<sup>2</sup> while the P<sub>rem</sub> is in the range of (2–8) µC/cm<sup>2</sup>. However, the reduction of the zero-field permittivity and hysteretic behaviour of ε(E) while the tunability level is still high makes from porous ceramics interesting materials for tunability application.https://www.mdpi.com/1996-1944/13/15/3324porous ceramicsdielectric propertiesDC tunabilitypiezoelectric coefficient |
| spellingShingle | Lavinia Curecheriu Vlad Alexandru Lukacs Leontin Padurariu George Stoian Cristina Elena Ciomaga Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous Ceramics Materials porous ceramics dielectric properties DC tunability piezoelectric coefficient |
| title | Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous Ceramics |
| title_full | Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous Ceramics |
| title_fullStr | Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous Ceramics |
| title_full_unstemmed | Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous Ceramics |
| title_short | Effect of Porosity on Functional Properties of Lead-Free Piezoelectric BaZr<sub>0.15</sub>Ti<sub>0.85</sub>O<sub>3</sub> Porous Ceramics |
| title_sort | effect of porosity on functional properties of lead free piezoelectric bazr sub 0 15 sub ti sub 0 85 sub o sub 3 sub porous ceramics |
| topic | porous ceramics dielectric properties DC tunability piezoelectric coefficient |
| url | https://www.mdpi.com/1996-1944/13/15/3324 |
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