Tailoring the Microwave Dielectric Properties of GdTiNb 1 _-xTa,O6 and Sm 1 _X Y,TiTa06 Ceramics

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Tailoring the Microwave Dielectric Properties of GdTiNb 1 _-xTa,O6 and Sm 1 _X Y,TiTa06 Ceramics

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dc.contributor.author Surendran,K P
dc.contributor.author Mohanan,P
dc.contributor.author Sebastian,M T
dc.date.accessioned 2009-03-31T10:28:41Z
dc.date.available 2009-03-31T10:28:41Z
dc.date.issued 2003
dc.identifier.uri http://dyuthi.cusat.ac.in/purl/1455
dc.description.abstract Microwave dielectric ceramics based on GdTiNb,-,.Ta,O6 and Sml _.,Y,TiTa06 have been prepared by conventional solid state method . The GdTiTaO6 and SmTiTaO6 have aeschenite structure with positive rr and GdTiNbO6 and YTiTaO6 have euxenite structure with negative rr. The rr of the ceramics has been tuned by preparing solid solution phases between the aeschynites and euxenites for a possible zero rr material . It is observed that GdTiNbt_YTa.,O6 undergoes a phase transition from aeschynite to euxenite when x=0.75 and in Sml-,YxTiTa06 for x= 0.73. The microwave dielectric properties change abruptly near the transition region . The rr value approaches zero near the phase transition region while the samples have poor sinterability and poor quality factor . The unloaded quality factor, dielectric constant and the sign of rr of the solid solution phases are found to depend on the average ionic radius of the rare earth ion in RE ,-5RE',TiTaO6. The boundary of the euxenite-aeschynite phase transition occurs at an average ( RE) ionic radius of 0.915 A in Sm,_, Y,.TiTaO6 solid solution phases en_US
dc.language.iso en en_US
dc.publisher ELSEVIER en_US
dc.subject Dielectric properties en_US
dc.subject Dielectric resonator en_US
dc.subject Microwave ceramics en_US
dc.subject Phase transition en_US
dc.subject Structure-property relation en_US
dc.title Tailoring the Microwave Dielectric Properties of GdTiNb 1 _-xTa,O6 and Sm 1 _X Y,TiTa06 Ceramics en_US
dc.type Working Paper en_US


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    This collection consists of published and unpublished working papers of Electronics

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