Ca4−xLa2+xTi5−xBxO17 (B = Al, Ga) dielectric ceramics for microwave applications

• Autorzy: Muhammad Raz , Khesro Amir

Identyfikatory

DOI

10.2478/msp-2020-0019

• Języki publikacji: EN

Abstrakty

EN

In this study, Ca_4−xLa_2+xTi_5−xB_xO₁₇(B = Al, Ga; x = 0, 1) ceramics were processed via a mixed oxide solid state sintering route and characterized using XRD, SEM, EDS and Vector Network Analyzer. Phase analysis of the samples showed single phase formation for the sample x = 0 while secondary phases formed for Ca_4−xLa_2+xTi_5−xB_xO₁₇ (B = Al, Ga; x = 1) ceramics. Ca₄La₂Ti₅O₁₇ exhibited ∈_r = 74, Q×f_o = 14,116 GHz and τ_f = 157 ppm/°C. The substitution of Ga or Al for Ti at the B-site of Ca₄La₂Ti₅O₁₇ ceramics significantly improved the microwave dielectric properties i.e. Ca₃La₃Ti₄GaO₁₇ and Ca₃La₃Ti₄AlO₁₇ have ∈r = 44, Q×f_o = 16,128 GHz and τ_f = 7.3 ppm/°C and ∈_r =46, Q×f_o= 13,754 GHz and τ_f = −2 ppm/°C, respectively. The microwave dielectric properties of these materials are suitable for high frequency microwave applications.

Słowa kluczowe

EN

ceramics; perovskite; microwave dielectric properties

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2020
• Tom: Vol. 38, No. 1
• Strony: 73--78
• Opis fizyczny: Bibliogr. 20 poz., rys.

Twórcy

autor

Muhammad Raz

• Department of Physics, Abdul Wali Khan University Mardan, 23200, KP, Pakistan

autor

Khesro Amir

• Department of Physics, Abdul Wali Khan University Mardan, 23200, KP, Pakistan

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).