TITLE

Size correlated long and short range order of ternary Co2FeGa Heusler nanoparticles

AUTHOR(S)
Wang, C. H.; Guo, Y. Z.; Casper, F.; Balke, B.; Fecher, G. H.; Felser, C.; Hwu, Y.
PUB. DATE
September 2010
SOURCE
Applied Physics Letters;9/6/2010, Vol. 97 Issue 10, p103106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The long and short range order of chemically prepared Co2FeGa Heusler nanoparticles with various sizes are determined by x-ray diffraction (XRD) and extended x-ray absorption fine structure (EXAFS) spectroscopy. Specifically, EXAFS fittings reveal the size dependent crystal structure and short range order of the Heusler type Co2FeGa nanoparticles. With decreasing particle size, the degree of L21 order in the nanoparticles decreases and the probability of B2 disorder increases simultaneously. The consequences of antisite disorder on the size correlated structure of Co2FeGa nanoparticles are also discussed.
ACCESSION #
53507796

 

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