Titlebook: Nanomagnetism; A. Hernando Book 1993 Springer Science+Business Media Dordrecht 1993 Metall.alloy.crystal.magnetic material.magnetism.thin

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Variety of Magnetic Phases in Nanocrystalline Fe-based Metallic Glassesmeasured at different temperatures were analyzed in terms of the well-known Langevin approach. At sufficiently low temperature (e.g., at room temperature), lower than the Curie points of both, the amorphous matrix and the particles, the sample behaves ferromagnetically in a way as it does for the typical commercial material.

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Magnetism of Nanocrystalline Particles observed in smoke particles, for sizes below 150 ?. The magnetic and structural data are consistent with a core-shell morphology where the core is metallic and the shell a polycrystalline metal-oxide. The surface magnetic oxide layer is found to enhance the coercivity of the particles and bring about a strong temperature dependence.

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Basic Magnetic Properties of Nanocrystalline Particles and Particle Ensemblesins, and interparticle interactions may reduce the coercive field down to 30–40% of the ideal value 2../... In ensembles of small particles the reduction of coercivity owing to long-range magnetostatic and short-range exchange coupling is less significant.

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Mesoscopic Quantum Tunneling in Amorphous Magnets with Strong Random-Axis Anisotropys. This result points out, for the first time, to a mesoscopic scale quantum tunneling of the magnetisation in 3-dimensional systems with strong random magnetic anisotropy. The determined average tunneling volumes are of the order of the short-range ferromagnetically correlated volumes existing in these systems.

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FMR and SMOKE Studies of Bilinear and Biquadratic Exchange Coupling in BCC Fe/Cu,Ag/Fe Trilayers. Thy interface roughness exhibits a strong short wavelength oscillatory behavior which is in agreement with recent first principles band calculations. The improved interfaces in the Fe/Ag/Fe system revealed new features in the exchange coupling which were absent in samples grown entirely at room temper

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Quantum Tunneling of Magnetizationanalysis of the full range of manifestations of classical processes. In this regard, we discuss the work of Bernard Barbara and this author in developing further the theory of magnetic relaxation in composites by introducing the ., which is a surface plot of the distribution of energy barriers with

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Book 1993d industry trends in these attributes are given. Scaling components, devices, and materials is shown to be a key factor in further improvement, Challenges to continued scaling are reviewed, particularly as they relate to magnetic nano-structures, materials, and characterization techniques.

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