Modifying the magnetic response of magnetotactic bacteria: incorporation of Gd and Tb ions into the magnetosome structure
Elizabeth M. Jefremovas, Lucía Gandarias, Lourdes Marcano, Ana Garcı́a-Prieto, I. Orúe, A. Muela, M. L. Fdez-Gubieda, L. Fernández Barquı́n, Javier Alonso
Abstract
Gd and Tb-ions incorporated into the magnetosome structure modify the magnetic properties of magnetotactic bacteria. The modification gets particularly remarkable by the dramatic reduction of the uniaxial (and magnetocrystalline) anisotropy terms below the Verwey transition.
Topics & Concepts
MagnetosomeMagnetotactic bacteriaMaterials scienceMagnetiteMagnetocrystalline anisotropyMagnetic nanoparticlesTransmission electron microscopyDopingMagnetizationNuclear magnetic resonanceNanoparticleChemical physicsNanotechnologyMagnetic anisotropyChemistryMagnetic fieldOptoelectronicsPhysicsQuantum mechanicsMetallurgyGeomagnetism and Paleomagnetism StudiesMagnetic and Electromagnetic EffectsPlanetary Science and Exploration