Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramics
Microwave dielectric ceramics (MWDCs) with low dielectric constant and low dielectric loss are desired in contemporary society, where the communication frequency is developing to high frequency (sub-6G). Herein, Nd2(Zr1−xTix)3(MoO4)9 (NZ1−xTxM, x = 0.02–0.10) ceramics were prepared through a solid-p...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2023-01-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2023.9220668 |
| _version_ | 1797858572723290112 |
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| author | Jian BAO Yuping ZHANG Hideo KIMURA Haitao WU Zhenxing YUE |
| author_facet | Jian BAO Yuping ZHANG Hideo KIMURA Haitao WU Zhenxing YUE |
| author_sort | Jian BAO |
| collection | DOAJ |
| description | Microwave dielectric ceramics (MWDCs) with low dielectric constant and low dielectric loss are desired in contemporary society, where the communication frequency is developing to high frequency (sub-6G). Herein, Nd2(Zr1−xTix)3(MoO4)9 (NZ1−xTxM, x = 0.02–0.10) ceramics were prepared through a solid-phase process. According to X-ray diffraction (XRD) patterns, the ceramics could form a pure crystal structure with the R3¯c (167) space group. The internal parameters affecting the properties of the ceramics were calculated and analyzed by employing Clausius–Mossotti relationship, Shannon’s rule, and Phillips–van Vechten–Levine (P–V–L) theory. Furthermore, theoretical dielectric loss of the ceramics was measured and analyzed by a Fourier transform infrared (IR) radiation spectrometer. Notably, when x = 0.08 and sintered at 700 ℃, optimal microwave dielectric properties of the ceramics were obtained, including a dielectric constant (εr) = 10.94, Q·f = 82,525 GHz (at 9.62 GHz), and near-zero resonant frequency temperature coefficient (τf) = −12.99 ppm/℃. This study not only obtained an MWDC with excellent properties but also deeply analyzed the effects of Ti4+ on the microwave dielectric properties and chemical bond characteristics of Nd2Zr3(MoO4)9 (NZM), which laid a solid foundation for the development of rare-earth molybdate MWDC system. |
| first_indexed | 2024-04-09T21:16:38Z |
| format | Article |
| id | doaj.art-c1ccedd30ab148d2a394d4e851e107ae |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-04-09T21:16:38Z |
| publishDate | 2023-01-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-c1ccedd30ab148d2a394d4e851e107ae2023-03-28T09:04:54ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082023-01-01121829210.26599/JAC.2023.9220668Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramicsJian BAO0Yuping ZHANG1Hideo KIMURA2Haitao WU3Zhenxing YUE4School of Environmental and Material Engineering, Yantai University, Yantai 264005, ChinaSchool of Environmental and Material Engineering, Yantai University, Yantai 264005, ChinaSchool of Environmental and Material Engineering, Yantai University, Yantai 264005, ChinaSchool of Environmental and Material Engineering, Yantai University, Yantai 264005, ChinaState Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, ChinaMicrowave dielectric ceramics (MWDCs) with low dielectric constant and low dielectric loss are desired in contemporary society, where the communication frequency is developing to high frequency (sub-6G). Herein, Nd2(Zr1−xTix)3(MoO4)9 (NZ1−xTxM, x = 0.02–0.10) ceramics were prepared through a solid-phase process. According to X-ray diffraction (XRD) patterns, the ceramics could form a pure crystal structure with the R3¯c (167) space group. The internal parameters affecting the properties of the ceramics were calculated and analyzed by employing Clausius–Mossotti relationship, Shannon’s rule, and Phillips–van Vechten–Levine (P–V–L) theory. Furthermore, theoretical dielectric loss of the ceramics was measured and analyzed by a Fourier transform infrared (IR) radiation spectrometer. Notably, when x = 0.08 and sintered at 700 ℃, optimal microwave dielectric properties of the ceramics were obtained, including a dielectric constant (εr) = 10.94, Q·f = 82,525 GHz (at 9.62 GHz), and near-zero resonant frequency temperature coefficient (τf) = −12.99 ppm/℃. This study not only obtained an MWDC with excellent properties but also deeply analyzed the effects of Ti4+ on the microwave dielectric properties and chemical bond characteristics of Nd2Zr3(MoO4)9 (NZM), which laid a solid foundation for the development of rare-earth molybdate MWDC system.https://www.sciopen.com/article/10.26599/JAC.2023.9220668microwave dielectric ceramics (mwdcs)nd2(zr1−xtix)3(moo4)9 (nz1−xtxm)phillips–van vechten–levine (p–v–l) theorytheoretical dielectric loss |
| spellingShingle | Jian BAO Yuping ZHANG Hideo KIMURA Haitao WU Zhenxing YUE Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramics Journal of Advanced Ceramics microwave dielectric ceramics (mwdcs) nd2(zr1−xtix)3(moo4)9 (nz1−xtxm) phillips–van vechten–levine (p–v–l) theory theoretical dielectric loss |
| title | Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramics |
| title_full | Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramics |
| title_fullStr | Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramics |
| title_full_unstemmed | Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramics |
| title_short | Crystal structure, chemical bond characteristics, infrared reflection spectrum, and microwave dielectric properties of Nd2(Zr1−xTix)3(MoO4)9 ceramics |
| title_sort | crystal structure chemical bond characteristics infrared reflection spectrum and microwave dielectric properties of nd2 zr1 xtix 3 moo4 9 ceramics |
| topic | microwave dielectric ceramics (mwdcs) nd2(zr1−xtix)3(moo4)9 (nz1−xtxm) phillips–van vechten–levine (p–v–l) theory theoretical dielectric loss |
| url | https://www.sciopen.com/article/10.26599/JAC.2023.9220668 |
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