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Bi‐YIG system: The effect of cation relocation on structural, hyperfine, and magnetic properties
Author(s) -
Niyaifar Mohammad,
Mohammadpour Hory,
Aezami Azadeh,
Amighian Jamshid
Publication year - 2016
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201552563
Subject(s) - hyperfine structure , materials science , octahedron , yttrium iron garnet , dodecahedron , ion , diffraction , mössbauer spectroscopy , bismuth , yttrium , crystallography , analytical chemistry (journal) , saturation (graph theory) , nuclear magnetic resonance , condensed matter physics , crystal structure , chemistry , atomic physics , optics , oxide , metallurgy , physics , organic chemistry , chromatography , mathematics , combinatorics
Bi x Y 3– x Fe 5 O 12 ( x = 0.0, 0.9, 1, 1.1, 1.2, and 1.3) were synthesized by the sol–gel method to investigate the effect of Bi substitution on the structural and magnetic properties of YIG. The XRD results indicate that all the diffraction peaks belong to the pure phase. The Mössbauer analysis shows an increase in theF e( d )3 + / F e[ a ]3 +ratio and also a line broadening at tetrahedral sites, which suggests a relocation of yttrium ions at dodecahedral sites with iron ions at octahedral sites. The saturation magnetization fluctuates with increasing bismuth content, which has been explained based on Mössbauer results. The change in vibrational band broadening and the observation of a new band in the far‐FTIR spectra confirm the proposed cation relocation.