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Investigation of the crystal structure, lattice vibration and dielectric property of SrZrO3 ceramic

Published online by Cambridge University Press:  03 October 2016

Feng Shi ,
Kuo Liang  and
Ze-Ming Qi
Feng Shi*
Affiliation:
School of Material Science & Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China
Kuo Liang
Affiliation:
School of Material Science & Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China
Ze-Ming Qi
Affiliation:
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, People's Republic of China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

SrZrO3 ceramic with perovskite-type structure was synthesized by a conventional solid-state reaction method at 1500 °C for 3 h. The crystal structures were studied by x-ray diffraction (XRD), and lattice vibrational modes were obtained by Raman and Fourier transform far-infrared (FTIR) reflection spectroscopy. The dielectric properties of the samples were also measured. According to XRD data, the SrZrO3 ceramic displayed the orthorhombic structure Pbnm (62). The Raman spectrum with ten active vibrators can be fitted by the Lorentzian function, and the vibrators were assigned. Far-infrared spectrum with six infrared active modes was fitted by the four-parameter semiquantum models. Consequently, the modes were assigned as F1u (1) (102 cm−1), F2u (2) (120 cm−1), F1u (3) (140 cm−1), F3u (4)′ (228 cm−1), F3u (4)″ (287 cm−1), F1u (5) (326 cm−1), and F1u (6) (527 cm−1). The infrared mode F1u (1), that can be represented as the Sr–ZrO6 inverted translational vibration, has the highest contribution to the dielectric properties (permittivity and dielectric loss). The calculated data agree well with the measured values.

Keywords

electic ceramicRaman spectroscopyFourier transform infrared spectroscopydielectric dielectric materials/propertiesstructure
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 20 , 28 October 2016 , pp. 3249 - 3254
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Copyright
Copyright © Materials Research Society 2016 

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