Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics
Lead-free piezoelectric 0.92(K<sub>0.445</sub>Na<sub>0.5</sub>Li<sub>0.05</sub>)NbO<sub>3</sub>-0.08BaZrO<sub>3</sub> (KNLN-BZ) ceramics were prepared via conventional sintering. Single-step, 2-step and 3-step temperature-controlled conditi...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/12/1784 |
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| author | Yan Tang Lingyan Wang Wei Ren Yi Quan Jinyan Zhao Zhe Wang Kun Zheng Jian Zhuang Gang Niu |
| author_facet | Yan Tang Lingyan Wang Wei Ren Yi Quan Jinyan Zhao Zhe Wang Kun Zheng Jian Zhuang Gang Niu |
| author_sort | Yan Tang |
| collection | DOAJ |
| description | Lead-free piezoelectric 0.92(K<sub>0.445</sub>Na<sub>0.5</sub>Li<sub>0.05</sub>)NbO<sub>3</sub>-0.08BaZrO<sub>3</sub> (KNLN-BZ) ceramics were prepared via conventional sintering. Single-step, 2-step and 3-step temperature-controlled conditions were designed. The structure and electrical properties of ceramics obtained using different temperature-controlled procedures were systematically studied. It was found that ceramic prepared using the 3-step method with a holding time of 20 h showed the highest electrical properties. The Curie temperature was approximately 286 °C, and the dielectric constant and dielectric loss at room temperature were 1350 and 4.5% at the frequency of 1 kHz, respectively. The highest remanent polarization, piezoelectric strain and piezoelectric coefficient, <i>d<sub>33</sub>*</i>, were obtained 60 °C, indicating a phase transition between ferroelectric phases. Although the ceramics did not show excellent piezoelectric properties, the 3-step sintering method can be considered an effective method to optimize the electrical performances of KNN-based ceramics. Combined with an appropriate composition, ceramics with excellent electrical properties could be obtained. This study provides a path to enhance the density and electrical properties for KNN-based ceramics with simple composition and potential for industry application. |
| first_indexed | 2024-03-09T17:09:13Z |
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| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-09T17:09:13Z |
| publishDate | 2022-12-01 |
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| series | Crystals |
| spelling | doaj.art-567a807fe3b941ed91bc9f9c3d6ff64d2023-11-24T14:10:53ZengMDPI AGCrystals2073-43522022-12-011212178410.3390/cryst12121784Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based CeramicsYan Tang0Lingyan Wang1Wei Ren2Yi Quan3Jinyan Zhao4Zhe Wang5Kun Zheng6Jian Zhuang7Gang Niu8Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaElectronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaLead-free piezoelectric 0.92(K<sub>0.445</sub>Na<sub>0.5</sub>Li<sub>0.05</sub>)NbO<sub>3</sub>-0.08BaZrO<sub>3</sub> (KNLN-BZ) ceramics were prepared via conventional sintering. Single-step, 2-step and 3-step temperature-controlled conditions were designed. The structure and electrical properties of ceramics obtained using different temperature-controlled procedures were systematically studied. It was found that ceramic prepared using the 3-step method with a holding time of 20 h showed the highest electrical properties. The Curie temperature was approximately 286 °C, and the dielectric constant and dielectric loss at room temperature were 1350 and 4.5% at the frequency of 1 kHz, respectively. The highest remanent polarization, piezoelectric strain and piezoelectric coefficient, <i>d<sub>33</sub>*</i>, were obtained 60 °C, indicating a phase transition between ferroelectric phases. Although the ceramics did not show excellent piezoelectric properties, the 3-step sintering method can be considered an effective method to optimize the electrical performances of KNN-based ceramics. Combined with an appropriate composition, ceramics with excellent electrical properties could be obtained. This study provides a path to enhance the density and electrical properties for KNN-based ceramics with simple composition and potential for industry application.https://www.mdpi.com/2073-4352/12/12/1784lead-free piezoelectric ceramicsKNLN-BZsintering processthermal stability |
| spellingShingle | Yan Tang Lingyan Wang Wei Ren Yi Quan Jinyan Zhao Zhe Wang Kun Zheng Jian Zhuang Gang Niu Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics Crystals lead-free piezoelectric ceramics KNLN-BZ sintering process thermal stability |
| title | Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics |
| title_full | Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics |
| title_fullStr | Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics |
| title_full_unstemmed | Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics |
| title_short | Effect of Sintering Conditions on the Electrical Properties of Lead-Free Piezoelectric Potassium Sodium Niobate-Based Ceramics |
| title_sort | effect of sintering conditions on the electrical properties of lead free piezoelectric potassium sodium niobate based ceramics |
| topic | lead-free piezoelectric ceramics KNLN-BZ sintering process thermal stability |
| url | https://www.mdpi.com/2073-4352/12/12/1784 |
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