DocumentCode
70171
Title
Structural and Magnetic Properties of 
Fe2 TiO4 
(
Author
Xinye Liu ; Sorescu, Monica ; Jingxian Wang ; Schoenthal, Whitney ; Dong, Zhaoyang ; Ramanujan, Raju V. ; Laughlin, David E. ; McHenry, Michael E.
Author_Institution
Mater. Sci. & Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
Volume
50
Issue
11
fYear
2014
fDate
Nov. 2014
Firstpage
1
Lastpage
4
Abstract
Titanomagnetites (TMs) [pseudobinary (1 - x)Fe3O4· xFe2 TiO4 oxides, where, e.g., TM75 corresponds to x-0.75] are magnetic minerals with a spinel structure. Ulvöspinel (Fe2TiO4) and TMs were made using a solid-state synthesis technique, and transmission electron microscopy (TEM) characterization and measurement of the TM samples were performed to further confirm the homogeneity of the samples and cation site occupancies. The Mössbauer spectra in the TMs exhibited an anomalous composition dependence at x=0.95, when fitted with two instead of three quadrupole split doublets. This result was reinforced by the obtained dependence of the recoilless fraction on the composition, which exhibited an extremum at x=0.95.
Keywords
Mossbauer effect; iron compounds; minerals; nanofabrication; nanomagnetics; nanostructured materials; remanence; transmission electron microscopy; Fe3O4-Fe2TiO4; Mossbauer spectra; TEM; TM75; anomalous composition dependence; cation site occupancies; magnetic minerals; magnetic properties; pseudobinary oxides; quadrupole split doublets; recoilless fraction; remanence; solid-state synthesis technique; spinel structure; structural properties; titanomagnetites; transmission electron microscopy; ulvospinel; Iron; Lattices; Magnetic properties; Magnetization; Magnetosphere; Solids; X-ray scattering; M??ssbauer studies; Martian minerals; remnant magnetization; titanomagnetite (TM);
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.2014.2326853
Filename
6971511
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