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  A structural characterisation of the Co2FeZ (Z=Al, Si, Ga, Ge) Heusler compounds by x-ray diffraction and extended x-ray absorption fine structure spectroscopy

Balke, B., Wurmehl, S., Fecher, G. H., Felser, C., Alves, M. C. M., Bernardi, F., et al. (2007). A structural characterisation of the Co2FeZ (Z=Al, Si, Ga, Ge) Heusler compounds by x-ray diffraction and extended x-ray absorption fine structure spectroscopy. Applied Physics Letters, 90(17): 172501, pp. 1-3. doi:10.1063/1.2731314.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-85B3-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-85B9-8
Genre: Journal Article

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 Creators:
Balke, Balke1, Author
Wurmehl, Sabine1, Author
Fecher, Gerhard H.1, Author
Felser, Claudia2, Author              
Alves, M. C. M.1, Author
Bernardi, Fabiano1, Author
Morais, Jonder1, Author
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1external, escidoc:persistent22              
2External Organizations, escidoc:persistent22              

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 Abstract: This work reports on the structure of Fe containing, Co2-based Heusler compounds that are suitable for magnetoelectronic applications. The compounds Co2FeZ (where Z=Al, Si, Ga, and Ge) were investigated using the x-ray diffraction(XRD) and extended x-rayabsorption fine structure(EXAFS) techniques. Using XRD, it was shown conclusively that Co2FeAl crystallizes in the B2structure whereas Co2FeSi crystallizes in the L21structure. For compounds containing Ga or Ge, the XRD technique cannot be used to easily distinguish between the two structures. For this reason, the EXAFS technique was used to elucidate the structure of these two compounds. Analysis of the EXAFS data indicated that both compounds crystallize in the L21structure.

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 Dates: 2007-04-23
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1063/1.2731314
 Degree: -

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Title: Applied Physics Letters
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: - Volume / Issue: 90 (17) Sequence Number: 172501 Start / End Page: 1 - 3 Identifier: Other: 0003-6951
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954922836223