Crystal structure and dielectric properties of functional electronic ceramic CaSrTiMnO6

doi:10.7523/j.issn.1002-1175.2013.03.007

Abstract

Abstract:

CaSrTiMnO₆(CSTM) dielectric ceramic was synthesized by the solid-state reaction method. Rietveld refinement results indicate that the ceramic has orthorhombic structure with space group pnma. Only one dielectric relaxation was found in CSTM ceramic, and it can be well explained by the mixed-valent structure (Mn³⁺/Mn⁴⁺) and normalized bond length theory. Within a temperature range from 333 K to 453 K, the value of dielectric constant was nearly stabilized at 4 000 in low frequencies, which suggests its wide potential application in the field of high-temperature and low-frequency dielectric devices.

Key words: perovskites, X-ray methods, Rietveld refinement, dielectric properties

CLC Number:

TM534.1

YAN Meng, TAN Yan-Qing, XIAO Xiao-Ling, HU Zhong-Bo, WU Mei-Mei, CHEN Dong-Feng. Crystal structure and dielectric properties of functional electronic ceramic CaSrTiMnO₆[J]. , 2013, 30(3): 322-328.

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Crystal structure and dielectric properties of functional electronic ceramic CaSrTiMnO₆

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