Quantum tunnelling of magnetisation

Preparation of nanoparticles of silver halides, superconductors and magnetic materials using water-in-oil microemulsions as nano-reactors

“…Magnetic pigments with particles in the nanometer size range have potential applications in information storage [118], color imaging [119], bioprocessing [120], ferrofluids [121], magnetic refrigeration [122] and magnetic resonance imaging [123]. The magnetic oxide commonly used for these applications is 7oFe203.…”

Europium chalcogenide magnetic semiconductor nanostructures

“…The study of magnetic nanoparticles has experimental and theoretical roots in studies by Néel in the 1950s. The work was driven by interest in small magnetic particles (∼100Å in diameter) trapped in rocks that recorded changes in the earth's magnetic field over time, eventually leading to the development of magnetic recording devices [6]. More recently, the synthesis of FePt nanoparticles reported by Murray, arguably inspired interest in magnetic nanoparticles for recording media applications [7].…”

Magnetic Fluids: Fabrication, Magnetic Properties, and Organization of Nanocrystals

“…[18,20,21] The size reduction of a magnetic material leads to novel properties compared to the bulk material, due to the small volume (superparamagnetism [7] ) or the high surface/volume ratio (spin canting [22,23] ). A better understanding of magnetism is crucial not only for basic physics but also because of the great technological importance of ferromagnets in information storage, [24] color imaging, [25] bioprocessing, [26] and ferrofluids. [27] Ferromagnetism occurs even for clusters with less than about 30 atoms.…”