Phase, microstructure and microwave dielectric properties of A-site deficient (La, Nd) 2/3TiO3 perovskite ceramics

• Autorzy: Saleem, M. , Iqbal, Y. , Qin, S. , Wu, X. , Zhu, F.
• Języki publikacji: EN

Abstrakty

EN

(La, Nd)_2/3TiO₃ ceramics were prepared through a conventional solid state mixed oxide route. For phase and microstructure analysis, XRD and SEM were used, respectively. Microwave dielectric properties were measured using a network analyzer. XRD patterns revealed the formation of the parent (La, Nd)_2/3TiO₃ phase along with (La, Nd)₄Ti₉O₂₄ as a secondary phase. The microstructure consisted of rectangular and needle shaped grains, which decreased in size from 4 μ m to 2 μm with an increase in sintering temperature from 1300 °C to 1350 °C. Decrease in grain size caused an increase in density of the samples from 4.81 g/cm³ to 5.17 g/cm³. Microwave dielectric properties of the samples calcined and sintered in air atmosphere were ε_r = 40.35, Q × f = 3499 GHz and τ _f = 0 ppm/°C, whereas for a sample calcined in nitrogen and sintered in air they were ε_r = 40.18, Q × f = 4077 GHz and τ _f = +4.9 ppm/°C, respectively.

Słowa kluczowe

EN

A-site deficient perovskites; dielectrics; phase analysis; ceramics

• Czasopismo: Materials Science Poland
• Rocznik: 2015
• Tom: Vol. 33, No. 1
• Strony: 126--130
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Saleem, M.

• Materials Research Laboratory, Institute of Physics and Electronics, University of Peshawar, 25120, Pakistan
• School of Earth and Space Sciences, Peking University, Beijing 100871, China

autor

Iqbal, Y.

• Materials Research Laboratory, Institute of Physics and Electronics, University of Peshawar, 25120, Pakistan,

autor

Qin, S.

• School of Earth and Space Sciences, Peking University, Beijing 100871, China

autor

Wu, X.

• 2School of Earth and Space Sciences, Peking University, Beijing 100871, China

autor

Zhu, F.

• School of Earth and Space Sciences, Peking University, Beijing 100871, China

Bibliografia

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Identyfikatory

DOI

10.1515/msp-2015-0018