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Planar faulting in rare earth–Co 2:17 alloys

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Title: Planar faulting in rare earth–Co 2:17 alloys
Authors: Lora-Serrano, R.1, Estevez-Rams, E.2 estevez@lae.ff.oc.uh.cu, Penton-Madrigal, A.3, Fidler, J.4, Grossinger, R.5, Tellez, J.C.5
Source: Solid State Communications. Apr2002, Vol. 122 Issue 1/2, p105. 5p.
Subjects: Intermetallic compounds, Order-disorder in alloys, X-ray spectroscopy
Abstract: Planar faulting in R2Co17 intermetallic alloys were studied by high-resolution X-ray diffraction. For the light rare-earth elements, the Th2Zn17 rhombohedral structure is found, while for the heavy rare-earth atoms, the Th2Ni17 structure prevails. For intermediate rare-earth atom, the R2Co17 structure shows planar disorder. The occurrence of planar faulting is associated with the interlayer distance in the structure. A correlation was found between interlayer distance and stacking order. Simple qualitative explanation is given for the energy preference for one particular type of stacking order. Planar disorder does not introduce new nearest-neighbors environments for the rare-earth atoms apart from those already found in the hexagonal and rhombohedral variants, but merely changes the probability of occurrence of each neighborhood. Simple stacking fault models should prove insufficient to explain the observed planar disorder. [Copyright &y& Elsevier]
Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
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  Data: Planar faulting in rare earth–Co 2:17 alloys
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  Data: <searchLink fieldCode="JN" term="%22Solid+State+Communications%22">Solid State Communications</searchLink>. Apr2002, Vol. 122 Issue 1/2, p105. 5p.
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  Data: Planar faulting in R2Co17 intermetallic alloys were studied by high-resolution X-ray diffraction. For the light rare-earth elements, the Th2Zn17 rhombohedral structure is found, while for the heavy rare-earth atoms, the Th2Ni17 structure prevails. For intermediate rare-earth atom, the R2Co17 structure shows planar disorder. The occurrence of planar faulting is associated with the interlayer distance in the structure. A correlation was found between interlayer distance and stacking order. Simple qualitative explanation is given for the energy preference for one particular type of stacking order. Planar disorder does not introduce new nearest-neighbors environments for the rare-earth atoms apart from those already found in the hexagonal and rhombohedral variants, but merely changes the probability of occurrence of each neighborhood. Simple stacking fault models should prove insufficient to explain the observed planar disorder. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Solid State Communications is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/S0038-1098(01)00487-2
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        Text: English
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        Type: general
      – SubjectFull: Order-disorder in alloys
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              Text: Apr2002
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