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The role of chelating agents on the structural and magnetic properties of α-Fe2O3 nanoparticles
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10.1063/1.3596573
/content/aip/journal/jap/109/12/10.1063/1.3596573
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/12/10.1063/1.3596573

Figures

Image of FIG. 1.
FIG. 1.

SEM images of the α-Fe2O3 nanoparticles synthesized at 400 °C via (a) co-precipitation and for adding (b) and (c) 0.01 mol/l of glycerine, and (d) and (e) 0.02 mol/l of sucrose.

Image of FIG. 2.
FIG. 2.

(Color online) XRD pattern to powder heated at 200, 300, and 400 °C obtained via (a) co-precipitation and for adding (b) 0.01 mol/l, and (c) 0.02 mol/l of sucrose.

Image of FIG. 3.
FIG. 3.

XRD pattern to powder heated at 200, 300, and 400 °C obtained via (a) co-precipitation and for adding (b) 0.01 mol/l, and (c) 0.02 mol/l of sucrose.

Image of FIG. 4.
FIG. 4.

Temperature dependence of the ZFC-FC magnetization measured at H = 100 Oe for α-Fe2O3 nanoparticles obtained by using sucrose and glycerine at 0.01 and 0.02 mol/l and synthesized at 200 °C. The inset shows the T-dependence for the sample synthesized at 200 °C by co-precipitation without adding the chelating agent.

Image of FIG. 5.
FIG. 5.

Temperature dependence of the ZFC-FC magnetization measured at H = 100 Oe for α-Fe2O3 nanoparticles obtained by using sucrose at 0.02 mol/l and synthesized at 200, 300, and 400 °C. The inset shows the temperature region where the Morin transition takes place for the 400 °C sample.

Tables

Generic image for table
Table I.

The mean particle sizes (in nanometers) for α-Fe2O3 samples estimated from the Rietveld method.

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/content/aip/journal/jap/109/12/10.1063/1.3596573
2011-06-20
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The role of chelating agents on the structural and magnetic properties of α-Fe2O3 nanoparticles
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/12/10.1063/1.3596573
10.1063/1.3596573
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