Elastic properties of Ca{sub 5-x}A {sub x}Nb{sub 2}TiO{sub 12} (A = Mg, Zn) microwave ceramics

Journal Article · Thu Apr 13 04:00:00 EDT 2006 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2005.09.030· OSTI ID:20891673

George, Vimala ^[1]; Philip, J ^[1]; Bijumon, P V ^[2]; Sebastian, M T ^[2]

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1. Sophisticated Test and Instrumentation Center, Cochin University of Science and Technology, Cochin 682022 (India)
2. Regional Research Laboratory, Industrial Estate P.O., Trivandrum 695019 (India)

Microwave dielectrics in Ca{sub 5-x}A {sub x}Nb{sub 2}TiO{sub 12} (A = Mg, Zn) system have been prepared for different values of x by conventional solid-state ceramic route. The elastic properties of the ceramics were investigated as a function of composition by ultrasonic techniques. X-ray diffraction studies revealed that the ceramics form phase pure compounds for 0 {<=} x {<=} 1 and form mixture phases beyond x = 1. The elastic properties were strongly affected by structural transformations. Magnesium-based compositions have better elastic properties compared with zinc-based system.

• OSTI ID: 20891673
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 4 Vol. 41; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM OXIDES
CERAMICS
DIELECTRIC MATERIALS
ELASTICITY
MAGNESIUM
MICROWAVE RADIATION
NIOBIUM HYDROXIDES
TANTALUM OXIDES
X-RAY DIFFRACTION
ZINC