Electron microscopic study on SrGdMnO4

doi:10.1016/j.jallcom.2004.12.181

2006-02-01

PRE

DOI：10.1016/j.jallcom.2004.12.181

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摘要

En 中文

Single crystals of SrGdMnO4 have been synthesized by the floating zone method. The structure was characterized as the K2NiF4-type, using X-ray diffraction (XRD) and a transmission electron microscope (TEM). Presence of weak reflections breaking the archetypal tetragonal symmetry was observed from the selected area diffraction (SAD). The compound was found to have an orthorhombic unit cell of a congruent to b=0.5324(4)nm, c=1.271(6)nm, by taking the a and b axes along the diagonal directions oil the basal plane of the tetragonal archetype. Structural change occurred around 1018 K. The weak reflections disappeared in the SAD pattern, suggesting that crystal is of the archetype above 1018 K. (c) 2005 Elsevier B.V. All rights reserved.

Keyword:

crystal growth

transmission electron microscopy

X-ray diffraction

crystal structure and symmetry

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期刊

Journal of Alloys and Compounds

IF:

6.3

论文数:

8.4W

被引数:

24.3W

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