Title

The Effect of Stoichiometric Variations on the Magnetic Structure of Y₆Mn₂₃

Abstract

As a consequence of large variations in previously reported magnetic moments of manganese on the four non-equivalent crystallographic sites of Y6Mn23, it was suggested that stoichiometric variations in composition might be responsible. Accordingly, non-stoichiometric ingots of Y6Mn23 were prepared ranging in composition (precast analysis) from Y6Mn21 to Y6Mn26. On the basis of atomic absorption analysis, high precision back-reflection X-ray diffraction and Rietveld profiling of powder neutron diffraction data, we conclude that extreme variations in stoichiometry cause little change in the magnetic moment magnitudes and that the variable results reported probably arise from the presence of small amounts of a second phase, YMn2 in the manganese-deficient samples and YMn12 in the manganese-rich samples. © 1983.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1983 Elsevier, All rights reserved.


Share

 
COinS