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Lemaire BJ, Davidson P, Ferré J, et al. Outstanding magnetic properties of nematic suspensions of goethite (alpha-FeOOH) nanorods. Phys Rev Lett. 2002;88(12):125507doi: 10.1103/PhysRevLett.88.125507.
Lemaire, B. J., Davidson, P., Ferré, J., Jamet, J. P., Panine, P., Dozov, I., & Jolivet, J. P. (2002). Outstanding magnetic properties of nematic suspensions of goethite (alpha-FeOOH) nanorods. Physical review letters, 88(12), 125507. https://doi.org/10.1103/PhysRevLett.88.125507
Lemaire, B J, et al. "Outstanding magnetic properties of nematic suspensions of goethite (alpha-FeOOH) nanorods." Physical review letters vol. 88,12 (2002): 125507. doi: https://doi.org/10.1103/PhysRevLett.88.125507
Lemaire BJ, Davidson P, Ferré J, Jamet JP, Panine P, Dozov I, Jolivet JP. Outstanding magnetic properties of nematic suspensions of goethite (alpha-FeOOH) nanorods. Phys Rev Lett. 2002 Mar 25;88(12):125507. doi: 10.1103/PhysRevLett.88.125507. Epub 2002 Mar 11. PMID: 11909477.
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Phys Rev Lett. 2002 Mar 25;88(12):125507. doi: 10.1103/PhysRevLett.88.125507. Epub 2002 Mar 11.

Outstanding magnetic properties of nematic suspensions of goethite (alpha-FeOOH) nanorods.

Physical review letters

B J Lemaire, P Davidson, J Ferré, J P Jamet, P Panine, I Dozov, J P Jolivet

Affiliations

  1. Laboratoire de Physique des Solides, UMR CNRS 8502, Bâtiment 510, Université Paris-Sud, 91405 Orsay, France.

PMID: 11909477 DOI: 10.1103/PhysRevLett.88.125507

Abstract

Aqueous suspensions of goethite (alpha-FeOOH) nanorods form a mineral lyotropic nematic phase that aligns in a very low magnetic field (20 mT for samples 20 microm thick). The particles orient along the field direction at intensities smaller than 350 mT, but they reorient perpendicular to the field beyond 350 mT. This outstanding behavior is also observed in the isotropic phase which has a very strong magnetic-field induced birefringence that could be interesting for applications. We interpret these magnetic effects as resulting from a competition between a nanorod remanent magnetic moment and a negative anisotropy of its magnetic susceptibility.

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