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024 7 _ |2 pmid
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024 7 _ |2 DOI
|a 10.1021/jp052974p
024 7 _ |2 WOS
|a WOS:000232959800012
037 _ _ |a PreJuSER-55901
041 _ _ |a eng
082 _ _ |a 530
100 1 _ |a Shiratori, Y.
|b 0
|u FZJ
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245 _ _ |a Polymorphism in micro-, submicro-, and nanocrystalline NaNbO3
260 _ _ |a Washington, DC
|b Soc.
|c 2005
300 _ _ |a 20122 - 20130
336 7 _ |a Journal Article
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336 7 _ |a article
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440 _ 0 |a Journal of Physical Chemistry B
|x 1520-6106
|0 3694
|y 43
|v 109
500 _ _ |a Record converted from VDB: 12.11.2012
520 _ _ |a NaNbO(3) powders with various particle sizes (ranging from 30 nm to several microns) and well-controlled stoichiometry were obtained through microemulsion-mediated synthesis. The effect of particle size on the phase transformation of the prepared NaNbO(3) powders was studied using X-ray powder diffraction, Raman spectroscopy, and nuclear site group analysis based on these spectroscopic data. Coarsened particles exhibit an orthorhombic Pbcm (D(2h)(11), no. 57) structure corresponding to the bulk structure, as observed for single crystals or powders prepared by conventional solid-state reaction. The crystal symmetry of submicron powders was refined with the space group Pmc2(1) (C(2v)(2), no. 26). The reduced perovskite cell volumes of these submicron powders were most expanded compared to all the other structures. Fine particles with a diameter of less than 70 nm as measured from SEM observations showed an orthorhombic Pmma (D(2h)(5), no. 51) crystal symmetry. The perovskite formula cell of this structure was pseudocubic and was the most compact one. A possible mechanism of the phase transformation is suggested.
536 _ _ |a Chemie und Dynamik der Geo-Biosphäre
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700 1 _ |a Magrez, A.
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700 1 _ |a Dornseiffer, J.
|b 2
|u FZJ
|0 P:(DE-Juel1)129189
700 1 _ |a Haegel, F.-H.
|b 3
|0 P:(DE-HGF)0
700 1 _ |a Pithan, C.
|b 4
|u FZJ
|0 P:(DE-Juel1)130894
700 1 _ |a Waser, R.
|b 5
|u FZJ
|0 P:(DE-Juel1)131022
773 _ _ |a 10.1021/jp052974p
|g Vol. 109, p. 20122 - 20130
|p 20122 - 20130
|q 109<20122 - 20130
|0 PERI:(DE-600)2006039-7
|t The @journal of physical chemistry / B
|v 109
|y 2005
|x 1520-6106
856 7 _ |u http://dx.doi.org/10.1021/jp052974p
909 C O |o oai:juser.fz-juelich.de:55901
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914 1 _ |y 2005
915 _ _ |0 StatID:(DE-HGF)0010
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920 1 _ |k IFF-IEM
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|d 31.12.2006
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|d 31.12.2006
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981 _ _ |a I:(DE-Juel1)PGI-7-20110106
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