Abstract
The sintering behavior and microwave dielectric properties of (1 − x)Cu3Nb2O8−xZn3Nb2O8 have been investigated using dilatometry, x-ray diffraction, and a network analyzer. It was found that (1 − x)Cu3Nb2O8−xZn3Nb2O8 ceramics have a much lower melting temperature than Zn3Nb2O8 ceramics without Cu3Nb2O8 additives. Samples sintered at 900 °C for 2 h exhibited densities >97% of the theoretical density. Cu3Nb2O8 acts as a sintering aid. Two phase regions were identified with increasing Zn3Nb2O8 contents. A Cu3Nb2O8−Zn3Nb2O8 solid solution exists from 0 < x < 0.5 while a mixture of Cu3Nb2O8 and Zn3Nb2O8 exists from 0.5 < x < 1. The microwave dielectric properties correlated to the crystal structure. In Cu3Nb2O8−Zn3Nb2O8 solid solution region, the variation of dielectric properties could be explained by the structure distortion of Cu3Nb2O8 due to electronic anisotropies of Cu2+ cations.
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References
H. Langbein and G. Wolki, Thermochimica Acta 264, 67 (1995).
E. Wahlstrom and B.O. Marinder, Inorg. Nucl. Chem. Lett. 13, 559 (1977).
M. Isobe, F. Marumo, S. Iwai, and Y. Kondo, Bull. Tokyo Inst. Tech. 120, 1 (1974).
H. Brusset, R. Mahe, and U.A. Kyi, Mater. Res. Bull. 7, 1061 (1972).
O. Yamaguchi, N. Maruyama, and K. Hirota, J. Mater. Sci. Lett. 10, 445 (1991).
M.G.B. Drew, R.J. Hobson, and V.T. Padayatchy, J. Mater. Chem. 5, 1779 (1995).
T. Takada, S.F. Wang, S. Yoshikawa, S.J. Jang, and R.E. Newnham, J. Am. Ceram. Soc. 77, 1909 (1994).
C.C. Lee and P. Lin, Jpn. J. Appl. Phys. 37, 6048 (1998).
C.F. Yang, Jpn. J. Appl. Phys. 38, 3576 (1999).
D. Hay, CELSIZ, package for unit cell refinement of powder X-ray data, CSIRO Division of Materials Science and Technology, Clayton, Australia.
D. Kaifez and P. Guillion, Dielectric Resonators; (Artech House, Norwood, MA, 1986), pp. 327–376.
B.W. Hakki and P.D. Coleman, IRE Tans. Microwave Theory & Technol. 8, 402 (1960).
T. Nishikawa, K. Wakino, H. Tamura, H. Tanaka, and Y. Ishikawa, IEEE MTT-S Digest 3, 277 (1987).
R.R. Tummala, J. Am. Ceram. Soc. 74, 895 (1991).
S.H. Knickerbocker, A.H. Kumar, and L.W. Herron, Am. Ceram. Soc. Bull. 72, 90 (1993).
G.M. Singer and M. Tomozawa, Phys. Chem. Glasses 30(3), 102 (1989).
C.R. Chang and J.H. Jean, J. Am. Ceram. Soc. 82, 1725 (1999).
R.R. Dayal, J. Less-Common Met. 26, 381 (1972).
I.D. Brown and R.D. Shannon, Acta. Cryst. A29, 266 (1973).
I.D. Brown, Acta. Cryst. B48, 553 (1992).
A.J. Bosman and E.E. Havinga, Phys. Rev. 129, 1593 (1960).
R.D. Shannon, J. Appl. Phys. 73, 348 (1993).
H.J. Lee, K.S. Hong, S.J. Kim, and I.T. Kim, Mater. Res. Bull. 32, 847 (1997).
K. Wakino and H. Tamura, Ceram. Trans. 8, 305 (1990).
H.J. Lee, K.S. Hong, and I.T. Kim, J. Mater. Res. 12, 1437 (1997).
D.W. Kim, D.Y. Kim, and K.S. Hong, J. Mater. Res. 15, 1331 (2000).
H.J. Lee, I.T. Kim, and K.S. Hong, Jpn. J. Appl. Phys. 36, L1318 (1997).
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Kim, DW., Kim, IT., Park, B. et al. Microwave dielectric properties of (1 − x)Cu3Nb2O8−xZn3Nb2O8 ceramics. Journal of Materials Research 16, 14 (2001). https://doi.org/10.1557/JMR.2001.0204
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DOI: https://doi.org/10.1557/JMR.2001.0204