Dielectric properties of Pb-based perovskite substituted by Ti for B-site at microwave frequencies

Substitutions of B-sites by Ti in several Pb-based perovskite ceramics that had high relative permittivities (ε r ), high Q values, and small temperature coefficients of resonant frequency (τ f ) were studied in order to control ε r and τ f independently. It was found that relative permittivities wi...

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Veröffentlicht in:	Japanese Journal of Applied Physics 1993-09, Vol.32 (9B), p.4332-4334
Hauptverfasser:	KAGATA, H, KATO, J, NISHIMOTO, K, INOUE, T
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric properties of solids and liquids Dielectric, piezoelectric, ferroelectric and antiferroelectric materials Dielectrics, piezoelectrics, and ferroelectrics and their properties Exact sciences and technology Niobates, titanates, tantalates, pzt ceramics, etc Physics
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Zusammenfassung:	Substitutions of B-sites by Ti in several Pb-based perovskite ceramics that had high relative permittivities (ε r ), high Q values, and small temperature coefficients of resonant frequency (τ f ) were studied in order to control ε r and τ f independently. It was found that relative permittivities with near-zero τ f in (Pb, Ca)(Zr, Ti)O 3 , (Pb, Ca){(Fe 1/2 Nb 1/2 ), Ti}O 3 , and (Pb, Ca){(Mg 1/3 Nb 2/3 ), Ti}O 3 systems could be controlled in the ε r regions lower than 105, 95, and 70, respectively. All these systems had sufficiently high Q values. They are applicable to resonant devices for mobile communications.
ISSN:	0021-4922 1347-4065
DOI:	10.1143/jjap.32.4332