Kim, Jeong-Ryeol Kim, Dong-Wan Cho, In-Sun Kim, Byoung Soo An, Jae-sul Hong, Kug Sun 2024-01-21T01:31:29Z 2024-01-21T01:31:29Z 2021-09-05 2007-03 0955-2219 https://pubs.kist.re.kr/handle/201004/134604 The effects of ZnB2O4 glass additions on the sintering temperature and microwave dielectric properties of Ba3Ti5Nb6O28 havebeen investigated using dilatometer, X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and a network analyzer. The pure Ba3Ti5Nb6O28 system showed a high sintering temperature (1250 degrees C) and had the good microwave dielectric properties: Q x f of 10,600GHz, epsilon(r) of 37.0, tau(f) of -12 ppm/degrees C. It was found that the addition of ZnB2O4 glass to Ba3Ti5Nb6O28 lowered the sintering temperature from 1250 to 925 degrees C. The reduced sintering temperature was attributed to the formation of ZnB2O4 liquid phase and B2O3-rich liquid phases. Also the addition of ZnB2O4 glass enhanced the microwave dielectric properties: Q x f of 19, 100 GHz, epsilon(r) of 36.6, tau(f) of 5 ppm/degrees C. From XPS and XRD studies, these phenomena were explained in terms of the reduction of oxygen vacancies and the formation of secondary phases having the good microwave dielectric properties. (C) 2007 Published by Elsevier Ltd. English ELSEVIER SCI LTD CERAMICS SYSTEM BARIUM Low temperature sintering and microwave dielectric properties of Ba3Ti5Nb6O28 with ZnO-B2O3 glass additions for LTCC applications Article 10.1016/j.jeurceramsoc.2006.11.036 1 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.27, no.8-9, pp.3075 - 3079 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 27 8-9 3075 3079 scie scopus 000246331700063 2-s2.0-33947701082 Materials Science, Ceramics Materials Science Article; Proceedings Paper CERAMICS SYSTEM BARIUM low temperature sintering