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Abstract: Effects of ZnO-B2O3 (ZB) addition have been investigated on the sintering behavior, structure and microwave dielectric properties of CaLa4Ti4O15 ceramics. The sintering temperature of CaLa4Ti4O15 ceramics with a very small amount of ZB addition such as 0.2 and 0.5% is obviously reduced from 1550 to 1375°C, and the sintering temperature range is significantly broadened to 1350–1450°C. With the increase of ZB addition, the secondary phases of CaLa4Ti5O17 and LaBO3 are observed in these ceramics. Not only sintering behavior but also microwave dielectric properties of CaLa4Ti4O15 ceramics have been enhanced by a small amount of ZB addition. Excellent microwave dielectric properties of ε = 42.7, Qf = 46.678THz, τf = –3.5 ppm/°C are achieved for the CaLa4Ti4O15 ceramics with 0.5% ZB addition sintered at 1375°C. © 2019, Pleiades Publishing, Ltd.
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Glass Physics and Chemistry
ISSN： 1087-6596
Year： 2019
Issue： 2
Volume： 45
Page： 126-132
0 . 6 6 8
JCR@2019
0 . 8 0 0
JCR@2023
ESI HC Threshold：236
JCR Journal Grade：4
CAS Journal Grade：4
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ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 0
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