Open AccessCharacterisation of the crystal structure of La0.4FeCo3Sb12 by means of x-ray and electron diffractions
Author(s) -
Xu Min,
Sheng Wen,
Zhan Gao,
Zhao Liang-Lei,
Bei Jiang,
Yang Lei,
Lanting Zhang
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.3302
Subject(s) - skutterudite , crystal structure , materials science , crystallography , rietveld refinement , atom (system on chip) , diffraction , powder diffraction , substructure , x ray , electron diffraction , electron , physics , chemistry , optics , thermal conductivity , thermoelectric materials , quantum mechanics , computer science , embedded system , composite material , structural engineering , engineering
The crystal structure and its evolution of an n-type La20.4FeCo3 Sb12 compound have been characterized by the Rietveld refinemen t and TEM observation. An interstitial site 01980nm in radius has been found in the lattice of t he binary Skutterudite compound. Filling this interstitial site by rare earth at om mainly results in a change of lattice coordinates of the Sb atom in the compo und. Thermal vibration parameter of the rare earth atom is larger than those of other atoms. The electron diffraction patterns confirm the bcc structure of this compound. The intensities of diffraction from different crystallographic planes correspond well between electron and powder x-ray diffractions.