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Lattice vibrational characteristics and structures-properties relationships of non-stoichiometric Nd[Mg0.5Sn0.5(1+x)]O-3 ceramics
Shi, F; Xiao, EC; Chen, GH; Chen, Y
2020-10-07
Source PublicationAPPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
ISSN0947-8396
Issue11
SubtypeArticle
AbstractNon-stoichiometric Nd[Mg0.5Sn0.5(1+x)]O-3 (- 0.04 <= x <= +0.04)-type samples were prepared using a traditional two-step solid-state sintering process. Their crystal structures, phase compositions, dielectric properties and lattice vibrational characteristics were identified in detail. The double perovskite Nd(Mg0.5Sn0.5)O-3 with a monoclinic structure was distinguished as the main crystalline phase, and pure phase was obtained when x<0. The sample [Nd(Mg0.5Sn0.49)O-3] at x=- 0.02 shows the excellent dielectric properties: (r)=18.74, Qxf=47,979 GHz. The lattice vibrational characteristics were clarified with Raman and infrared active mode spectroscopy. The intrinsic properties were fitted by four-parameter semi-quantum model, which show that the low-frequency infrared modes yield a more significant contribution to permittivity and dielectric loss. Raman shifts of modes F-2g(A) and F-2g(B) correlate with dielectric constants negatively, which implies that the bond length has a positive correlation with permittivity. Full widths at half maximum of vibrational modes A(1g)(O) correlate with dielectric loss values positively and correlate with the degree of order (S) negatively.
DOI10.1007/s00339-020-04028-w
WOS KeywordMICROWAVE DIELECTRIC-PROPERTIES ; CRYSTAL-STRUCTURE ; SPECTROSCOPIC PROPERTIES ; SCHEELITE
Language英语
WOS Research AreaMaterials Science ; Physics
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27702
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Shi, F,Xiao, EC,Chen, GH,et al. Lattice vibrational characteristics and structures-properties relationships of non-stoichiometric Nd[Mg0.5Sn0.5(1+x)]O-3 ceramics[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2020(11).
APA Shi, F,Xiao, EC,Chen, GH,&Chen, Y.(2020).Lattice vibrational characteristics and structures-properties relationships of non-stoichiometric Nd[Mg0.5Sn0.5(1+x)]O-3 ceramics.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING(11).
MLA Shi, F,et al."Lattice vibrational characteristics and structures-properties relationships of non-stoichiometric Nd[Mg0.5Sn0.5(1+x)]O-3 ceramics".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING .11(2020).
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