Journal article
Site Preferences of Hyperfine Impurities in Ni2Al3 Phases
Hyperfine interactions, Vol.136(3), pp.647-652
11/2001
Handle:
https://hdl.handle.net/2376/122158
Abstract
The site occupation of indium solutes in Ni2Al3-type compounds was determined using perturbed angular correlation of gamma rays. Measurements were made for compositions on both sides of the stoichiometric composition. Sites were identified through their quadrupole interactions. For transition-metal (TM) rich aluminides and galliumides, indium solutes occupy only one of two inequivalent trivalent-metal sites (Al or Ga). For TM-poor aluminides, indium solutes tend to locate at noncrystallographic sites such as in grain boundaries. For TM-poor galliumides, the solutes occupy nickel sites while close to the stoichiometric composition they also occupy sites on an empty Ni-sublattice. Composition dependences of site preference for indium solutes in Pt2Al3 and Ni2Ga3 are examined in terms of a recently developed thermodynamic model.
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Details
- Title
- Site Preferences of Hyperfine Impurities in Ni2Al3 Phases
- Creators
- Matthew Zacate - Washington State UniversityGary Collins - Washington State University
- Publication Details
- Hyperfine interactions, Vol.136(3), pp.647-652
- Academic Unit
- Physics and Astronomy, Department of
- Publisher
- Kluwer Academic Publishers
- Identifiers
- 99900646681201842
- Language
- English
- Resource Type
- Journal article