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Measurement of Small Concentrations of Cr and Fe in α‐Al 2 O 3 Using Electron Spin Resonance
Author(s) -
BIASI R. S.,
RODRIGUES D. C. S.
Publication year - 1985
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1985.tb10154.x
Subject(s) - electron paramagnetic resonance , chromium , analytical chemistry (journal) , materials science , grain size , line width , resonance (particle physics) , line (geometry) , metal , doping , electron , nuclear magnetic resonance , chemistry , atomic physics , metallurgy , physics , optics , optoelectronics , geometry , mathematics , chromatography , quantum mechanics
Electron spin resonance line widths for Cr 3+ and Fe 3+ were measured in α‐Al 2 O 3 samples doped with <1.2 mol% of Cr and Fe. Line width increased with increasing Cr and Fe concentration and decreased with increasing grain size. The experimental results show that this technique can be used to determine, rapidly and nondestructively, small concentrations of Cr and Fe in commercial Al 2 O 3 . Nomograms are provided to facilitate interpretation of the results.