Journal
CHEMICAL PHYSICS LETTERS
Volume 410, Issue 1-3, Pages 36-38Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2005.04.090
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Some basic magnetic properties of alpha-Fe2O3 nanowires synthesized by oxygenating pure iron are reported. The blocking temperature of the nanowires is 120 K, where the field-cooled and zero-field-cooled magnetization curves diverge, and the hysteresis loops vary notably with temperature. No evidence for Morin transition is found in the temperature range 4-300 K. In addition, the magnetic behavior below 50 K shows a further freezing of magnetic moments. Compared with nanoparticles, the nanowires show some significant differences in magnetic properties. (c) 2005 Published by Elsevier B.V.
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