Effect of BaCu(B2O5) on the sintering temperature and microwave dielectric properties of BaO–L.pdfVIP

Materials Research Bulletin 41 (2006) 1868–1874 /locate/matresbu Effect of BaCu(B O ) on the sintering temperature and 2 5 microwave dielectric properties of BaO–Ln O –TiO 2 3 2 (Ln = Sm, Nd) ceramics Jong-Bong Lim a, Kyung-Hoon Cho a, Sahn Nahm a,*, Jong-Hoo Paik b, Jong-Hee Kim b a Department of Materials Science and Engineering, Korea University, 1-5 Ka, Anam-Dong, Sungbuk-Ku, Seoul 136-701, Republic of Korea b Korea Institute of Ceramic Engineering and Technology, 233-5, Gasan-Dong, Guemcheon-Gu, Seoul 153-801, Republic of Korea Received 27 January 2006; received in revised form 8 March 2006; accepted 13 March 2006 Available online 4 April 2006 Abstract BaCu(B O ) (BCB) ceramic powder was used to decrease the sintering temperatures of BaSm Ti O (BST) and BaNd Ti O 2 5 2 4 12 2 5 14 (BNT) ceramics. The sintering temperature of the BSTand BNT ceramics was reduced from approximately 1350 8C to 850 8C by the addition of BCB. The bulk density of the specimens increased and reached the saturated value with increasing BCB content. The variation of the dielectric constant (er) was similar to that of the bulk density and,