Journal Article

PUBDB-2016-05983

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Structure and dielectric dispersion in cubic-like $\mathrm{0.5K_{0.5}Na_{0.5}NbO_{3}-0.5Na_{1/2}Bi_{1/2}TiO_{3}}$ ceramic

Liu, L. (Corresponding author)Extern* ; Knapp, M.Extern* ; Schmitt, L. A.Extern* ; Ehrenberg, H.Extern* ; Fang, L. ; Fuess, H. ; Hoelzel, M.Extern* ; Hinterstein, M. (Corresponding author)

2016
EDP Science8268 Les-Ulis

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Please use a persistent id in citations: doi:10.1209/0295-5075/114/47011  doi:10.3204/PUBDB-2016-05983

Abstract: The nature of the cubic-like state in the lead-free piezoelectric ceramics 0.5K$_{0.5}$Na$_{0.5}$NbO$_{3}$-0.5Na$_{1/2}$Bi$_{1/2}$TiO$_{3}$ (KNN-50BNT) has been examined in detail by synchrotron x-ray diffraction (SD), selected-area electron diffraction (SAED), neutron diffraction (ND), and temperature-dependent dielectric characterization. The SD pattern of KNN-50BNT presents a pure perovskite structure with pseudocubic symmetry. However, superlattice reflections were observed by SAED and completely indexed by tetragonal symmetry with P4bm space group in ND pattern. The relaxor behavior of KNN-50BNT is compared with Pb-based and Ba-based relaxors and discussed in the framework of the Vogel-Fulcher law and the new glass model. The KNN-50BNT ceramic exhibits the strongest dielectric dispersion among them.

Note: (c) EPLA

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Contributing Institute(s):

1. DOOR-User (DOOR)

Research Program(s):

1. 6G3 - PETRA III (POF3-622) (POF3-622)

Experiment(s):

1. PETRA Beamline P02.1 (PETRA III)

Appears in the scientific report 2016

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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