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Crystal structure, dielectric properties, and lattice vibrational characteristics of LiNiPO4 ceramics sintered at different temperatures
Xiao, En-cai; Cao, Zhikai; Li, Jianzhu; Li, Xue-Hui; Liu, Mengting; Yue, Zhenxing; Chen, Ying; Chen, Guohua; Song, Kaixin; Zhou, Huanfu; Shi, Feng
2019-12-31
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
SubtypeArticle; Early Access
AbstractLiNiPO4 (LNP) ceramics were synthesized using a conventional solid-state reaction method and different sintering temperatures. Differential scanning calorimetry (DSC), thermogravimetric (TG) analysis, and X-ray diffraction (XRD) measurements indicated that single- phase olivine (Pnma, No. 62) was formed above 750 degrees C, and dense LNP ceramic with a theoretical density of more than 95% was obtained at 825 degrees C. Raman and far-infrared (IR) vibrational modes were assigned and discussed in detail. The intrinsic dielectric properties of the samples were calculated using the four-parameter semi-quantum (FPSQ) model based on far-IR reflectance spectroscopy and were in good agreement with the measured values. A positive relationship existed between the Raman shift of the upsilon(1) mode (attributed to the symmetric vibration of [PO4](3-)) and the corrected permittivity, and the opposite correlation was observed between the quality factor (Q x f) and the damping of the upsilon(s) mode as well as the distortion of the [NiO6] octahedra. The optimized microwave dielectric properties of the LNP ceramics sintered at 825 degrees C include an ultralow dielectric constant (5.18) and a good quality factor (24 076 GHz, f = 17.2 GHz).
Keyworddielectric properties lattice vibrational characteristics microwave dielectric ceramics olivine type structure-property relationship
DOI10.1111/jace.16933
WOS KeywordMICROWAVE ; EVOLUTION ; RAMAN ; NI ; CO
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27450
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Xiao, En-cai,Cao, Zhikai,Li, Jianzhu,et al. Crystal structure, dielectric properties, and lattice vibrational characteristics of LiNiPO4 ceramics sintered at different temperatures[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019.
APA Xiao, En-cai.,Cao, Zhikai.,Li, Jianzhu.,Li, Xue-Hui.,Liu, Mengting.,...&Shi, Feng.(2019).Crystal structure, dielectric properties, and lattice vibrational characteristics of LiNiPO4 ceramics sintered at different temperatures.JOURNAL OF THE AMERICAN CERAMIC SOCIETY.
MLA Xiao, En-cai,et al."Crystal structure, dielectric properties, and lattice vibrational characteristics of LiNiPO4 ceramics sintered at different temperatures".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2019).
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