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
Link To Document :
