Phase evolution and microwave dielectric properties of A5M5O17-type ceramics

• Autorzy: Ali M. , Iqbal Y. , Muhammad R.

Identyfikatory

DOI

10.1515/msp-2017-0047

• Języki publikacji: EN

Abstrakty

EN

A number of A₅M₅O₁₇ (A = Na, Ca, Sr, La, Nd, Sm, Gd, Dy, Yb; B = Ti, Nb, Ta) type compounds were prepared by a solid-state sintering route and characterized in terms of structure, microstructure and microwave dielectric properties. The compatibility of rare earths with mixed niobate/tantalate and titanate phases was investigated. The larger ionic radii mismatch resulted in the formation of pyrochlore and/or mixed phases while in other cases, pure A₅M₅O₁₇ phase was formed. The samples exhibited relative permittivity in the range of 35 to 82, quality factor (Q × fo) = 897 GHz to 11946 GHz and temperature coefficient of resonance frequency (τ_f) = -120 ppm/°C to 318 ppm/°C.

Słowa kluczowe

EN

A5M5O17; dielectrics; microwave properties

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2017
• Tom: Vol. 35, No. 2
• Strony: 362--367
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Ali M.

• Department of Physics, University of Malakand, Chakdara, KP, Pakistan
• Materials Research Laboratory, Department of Physics, University of Peshawar, 25120 KP, Pakistan

autor

Iqbal Y.

• Materials Research Laboratory, Department of Physics, University of Peshawar, 25120 KP, Pakistan

autor

Muhammad R.

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

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).