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  Structural and magnetic properties of Co2FeAl1-xSix

Balke, B., Fecher, G. H., & Felser, C. (2007). Structural and magnetic properties of Co2FeAl1-xSix. Applied Physics Letters, 90(24): 242503, pp. 1-3. doi:10.1063/1.2748341.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-887B-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-8885-4
Genre: Journal Article

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 Creators:
Balke, Benjamin1, Author
Fecher, Gerhard H., Author
Felser, Claudia2, Author              
Affiliations:
1external, escidoc:persistent22              
2External Organizations, escidoc:persistent22              

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 Abstract: This work reports about the structural and magnetic properties of the quaternary Heusler alloy Co2FeAl1-xSix with varying Si concentration. The structure of the Co2FeAl1-xSix solid solution was investigated by means of x-ray diffraction and differential scanning calorimetry. It is found that the alloys exhibit the L2(1) structure for x >= 0.4. Depending on the Si concentration x, a structural phase transition is found at temperatures between 1000 and 1200 K. The transition temperature decreases with increasing Si content x. The magnetic properties were studied using low temperature magnetometry. For x >= 0.4, the magnetization of the compounds is in agreement with a Slater-Pauling-like behavior and with the values obtained from ab initio calculations. For x <= 0.4, enlarged magnetic moments are found due to disorder. The enlarged values are explained by an increase of the Co spin moments and enhanced orbital moments. (c) 2007 American Institute of Physics.

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 Dates: 2007-06-11
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: ISI: 000247305400058
DOI: 10.1063/1.2748341
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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 (24) Sequence Number: 242503 Start / End Page: 1 - 3 Identifier: Other: 0003-6951
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954922836223