Origin of shape anisotropy effects in solution-phase synthesized FePt nanomagnets

D. A. Ferrer, S. Guchhait, H. Liu, F. Ferdousi, C. Corbet, H. Xu, M. Doczy, G. Bourianoff, L. Mathew, R. Rao, S. Saha, M. Ramon, S. Ganguly, J. T. Markert, S. K. Banerjee

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Abstract

Controlling the morphology of inorganic nanocrystals is important because many of their electronic attributes are highly sensitive to shape and aspect ratio. FePt nanocrystals have potential as advanced magnetic materials for ultrahigh-density memory. This is due to their high shape and/or magnetocrystalline anisotropy, which allows bits as small as 3 nm to be thermally stable over typical data storage periods of 10 years. Herein, nanocrystals were simply fabricated by simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl in properly chosen conditions of solvent/surfactant proportions and temperature for rational design of their shape and magnetic properties. This work has combined magnetometry measurements and micromagnetic simulations to illustrate the role of the external shape on the rotation of the magnetization vector for colloidal assemblies.

Original languageEnglish
Article number014316
JournalJournal of Applied Physics
Volume110
Issue number1
DOIs
Publication statusPublished - Jul 1 2011

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ferrer, D. A., Guchhait, S., Liu, H., Ferdousi, F., Corbet, C., Xu, H., Doczy, M., Bourianoff, G., Mathew, L., Rao, R., Saha, S., Ramon, M., Ganguly, S., Markert, J. T., & Banerjee, S. K. (2011). Origin of shape anisotropy effects in solution-phase synthesized FePt nanomagnets. Journal of Applied Physics, 110(1), [014316]. https://doi.org/10.1063/1.3608109