EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICS
0.96(K0.49Na0.51)(Nb0.97Ta0.03)O₂-0.04Bi0.5Na0.5ZrO₃ + x mol% MnO₂ (0.96KNNT-0.04BNZ + x mol% MnO₂, x=0, 0.1, 0.2, 0.4, 0.6, 0.8) lead-free piezoelectric ceramics were prepared via conventional solid state method. The effect of MnO₂ doping content on the structure and electrical properties of 0.96K...
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| Format: | Article |
| Language: | English |
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University of Chemistry and Technology, Prague
2019-10-01
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| Series: | Ceramics-Silikáty |
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http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1282
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| _version_ | 1819089609866346496 |
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| author | Wenqin Luo Zongyang Shen |
| author_facet | Wenqin Luo Zongyang Shen |
| author_sort | Wenqin Luo |
| collection | DOAJ |
| description | 0.96(K0.49Na0.51)(Nb0.97Ta0.03)O₂-0.04Bi0.5Na0.5ZrO₃ + x mol% MnO₂ (0.96KNNT-0.04BNZ + x mol% MnO₂, x=0, 0.1, 0.2, 0.4, 0.6, 0.8) lead-free piezoelectric ceramics were prepared via conventional solid state method. The effect of MnO₂ doping content on the structure and electrical properties of 0.96KNNT-0.04BNZ ceramics was investigated. All samples had pure perovskite structure with coexistence of orthorhombic and tetragonal phases at room temperature. The 0.96KNNT-0.04BNZ + 0.2 mol% MnO₂ ceramic sample exhibited enhanced piezoelectric constant (d33=330 pC/N) and planar electromechanical coupling coefficient (kp=38.8%). In addition to other optimized electrical properties such as medium high dielectric permittivity (εT33/ ε₀ =1370) and mechanical quality factor (Qm=135), relatively low dielectric loss (tanδ=2.4%) and high Curie temperature (Tc=305 ̊C), this ceramic sample should be a promising lead-free alternative to toxic lead-based piezoelectric materials. |
| first_indexed | 2024-12-21T22:10:40Z |
| format | Article |
| id | doaj.art-7145d5ec387f480fa460fb5afcbeb423 |
| institution | Directory Open Access Journal |
| issn | 0862-5468 1804-5847 |
| language | English |
| last_indexed | 2024-12-21T22:10:40Z |
| publishDate | 2019-10-01 |
| publisher | University of Chemistry and Technology, Prague |
| record_format | Article |
| series | Ceramics-Silikáty |
| spelling | doaj.art-7145d5ec387f480fa460fb5afcbeb4232022-12-21T18:48:36ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472019-10-0163439940210.13168/cs.2019.003610.13168/cs.2019.0036.20191104111856EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICSWenqin Luo0Zongyang Shen1 Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, China National Light Industry Key Laboratory of Functional Ceramic Materials, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China Energy Storage and Conversion Ceramic Materials Engineering Laboratory of Jiangxi Province, China National Light Industry Key Laboratory of Functional Ceramic Materials, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, China 0.96(K0.49Na0.51)(Nb0.97Ta0.03)O₂-0.04Bi0.5Na0.5ZrO₃ + x mol% MnO₂ (0.96KNNT-0.04BNZ + x mol% MnO₂, x=0, 0.1, 0.2, 0.4, 0.6, 0.8) lead-free piezoelectric ceramics were prepared via conventional solid state method. The effect of MnO₂ doping content on the structure and electrical properties of 0.96KNNT-0.04BNZ ceramics was investigated. All samples had pure perovskite structure with coexistence of orthorhombic and tetragonal phases at room temperature. The 0.96KNNT-0.04BNZ + 0.2 mol% MnO₂ ceramic sample exhibited enhanced piezoelectric constant (d33=330 pC/N) and planar electromechanical coupling coefficient (kp=38.8%). In addition to other optimized electrical properties such as medium high dielectric permittivity (εT33/ ε₀ =1370) and mechanical quality factor (Qm=135), relatively low dielectric loss (tanδ=2.4%) and high Curie temperature (Tc=305 ̊C), this ceramic sample should be a promising lead-free alternative to toxic lead-based piezoelectric materials. http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1282 lead-free ceramics piezoelectric properties knn mno₂ doping |
| spellingShingle | Wenqin Luo Zongyang Shen EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICS Ceramics-Silikáty lead-free ceramics piezoelectric properties knn mno₂ doping |
| title | EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICS |
| title_full | EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICS |
| title_fullStr | EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICS |
| title_full_unstemmed | EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICS |
| title_short | EFFECT OF MnO₂ ON THE ELECTRICAL PROPERTIES OF 0.96KNNT-0.04BNZ LEAD-FREE PIEZOELECTRIC CERAMICS |
| title_sort | effect of mno₂ on the electrical properties of 0 96knnt 0 04bnz lead free piezoelectric ceramics |
| topic | lead-free ceramics piezoelectric properties knn mno₂ doping |
| url |
http://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1282
|
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