Determination of the zirconium site in zirconium-substituted Nd2Fe14B

We report a direct determination of the Zr site in pseudoternary alloys with a nominal composition of Nd1.6Zr0.4Fe14B using extended x-ray absorption fine structure (EXAFS). Comparing the Zr EXAFS from these alloys to the Y EXAFS from Y2Fe14B and the Fe EXAFS from Nd2Fe14B reveals that the local Zr...

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Bibliographic Details
Published in:Journal of applied physics 1993-05, Vol.73 (10), p.6476-6478
Main Authors: CAPEHART, T. W, MISHRA, R. K, PINKERTON, F. E
Format: Article
Language:English
Subjects:
Alloys
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Metals. Metallurgy
Physics
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
X-ray absorption spectroscopy: exafs, nexafs, xanes, etc
X-ray diffraction and scattering
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Summary:We report a direct determination of the Zr site in pseudoternary alloys with a nominal composition of Nd1.6Zr0.4Fe14B using extended x-ray absorption fine structure (EXAFS). Comparing the Zr EXAFS from these alloys to the Y EXAFS from Y2Fe14B and the Fe EXAFS from Nd2Fe14B reveals that the local Zr and Y environments are nearly identical, and quite disparate from the Fe environment. This finding, and results from x-ray diffraction and electron microscopy, lead to the conclusion that Zr is incorporated as a substituent for Nd in the Nd2Fe14B structure.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.352585