Microstructural and microwave dielectric properties of LZT (Li2ZnTi3O8) ceramics sintered in presence of bismuth borate glass for LTCC applications |
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| Authors: | Mahboubeh Kiani Zitani Touradj Ebadzadeh Sara Banijamali Reza Riahifar Christian Rüssel Tilman Zscheckel Haishen Ren |
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| Affiliation: | 1. Ceramic department, Materials and Energy Research Center (MERC), P. O. Box: 31787-316, Alborz, Iran;2. Otto-Schott-Institut für Material Forschung, Jena University, 07743 Jena, Germany;3. Battery and Sensor Group, Materials and Energy Research Center (MERC), P. O. Box: 31787-316, Alborz, Iran;4. Key Laboratory of Inorganic Functional Material and Device, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
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| Abstract: | In the present research, the Li2ZnTi3O8(LZT) ceramics were synthesized throughout solid-state ceramic processing, then mixed with bismuth borate (BiBO) glass prepared based on conventional melt quenching method. Wetting behavior of BiBO glass on the LZT ceramic substrate was monitored by hot stage microscopy. Afterward, dielectric LZT ceramics containing different amounts of BiBO glass (0.25–6 wt%) were sintered at various temperatures. X-ray diffraction and electron back scatter diffraction examinations revealed the presence of two crystalline phases of Li2ZnTi3O8 and Bi2Ti2O7. The maximum value of relative density (above 95%) was obtained in the case of specimens contained more than 5 wt% glass. The microwave dielectric properties of the finally sintered BiBO glass containing LZT ceramics were as follows: dielectric constant (εr) = 21.44–25.09, quality factor (Q × f) = 10839–54708 GHz and temperature coefficient of resonant frequency (τf) = (? 15.58) ? (? 12.86)ppm/°C. |
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| Keywords: | Electron Backscatter Diffraction (EBSD) Dielectric properties |
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