Author:
Okita Atsushi,Saito Fumikazu,Sasaki Satoshi,Toyoda Takeshi,Koinuma Hideomi
Abstract
Site preferency of cations in Mn–Zn–Fe ferrite, Mn0.54Zn0.35Fe2.11O4, has
been investigated using spherical single crystals with synchrotron X-rays.
The anomalous scattering effect was applied to diffraction experiments in
a four-circle diffractometry at wavelengths of 1.7535 and 1.2934 Å which
are 0.01 Å longer than Fe K- and Zn K-absorption edges, respectively.
The two-wavelengths anomalous dispersion (TWAD) method allowed us
to determine the cation distributions accurately with a large difference in
atomic scattering factors. The result shows that all Mn and Zn ions fully
occupy the tetrahedral A sites within the experimental errors, suggesting
that Mn–Zn–Fe ferrite has the crystal structure of a typical normal spinel.
The chemical formula is [Mn0.54Zn0.34Fe0.12]A[Zn0.01Fe1.99]BO4. The
cell dimension and u parameter are a=8.4727±0.0006 Å and
u=0.2609±0.0002, respectively.
Subject
General Physics and Astronomy,Physics and Astronomy (miscellaneous),General Engineering
Cited by
11 articles.
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