Viewing spin structures with soft X-ray microscopy / Peter Fischer in Materials today, Vol. 13 N° 9 (Septembre 2010)  

Public ISBD [article]  inMaterials today > Vol. 13 N° 9 (Septembre 2010) . - pp. 14-22 Titre : Viewing spin structures with soft X-ray microscopy Type de document : texte imprimé Auteurs : Peter Fischer, Auteur Année de publication : 2011 Article en page(s) : pp. 14-22 Note générale : Ingénierie Langues : Anglais (eng) Mots-clés : X-ray Microscopy Magnetic microscopies Electron optics Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The spin of the electron and it's associated magnetic moment marks the basic unit for magnetic properties of matter [1] and [2] . Magnetism, in particular ferromagnetism and antiferromagnetism is described by a collective order of these spins, where the interaction between individual spins reflects a competition between exchange, anisotropy and dipolar energy terms. As a result the energetically favored ground state of a ferromagnetic system is a rather complex spin configuration, the magnetic domain structure3. Magnetism is one of the eldest scientific phenomena, yet it is one of the most powerful and versatile utilized physical effects in modern technologies, such as in magnetic storage and sensor devices. To achieve highest storage density, the relevant length scales, such as the bit size in disk drives is now approaching the nanoscale and as such further developments have to deal with nanoscience phenomena [4] , [5] , [6] , [7] , [8] and [9] . Advanced characterization tools are required to fully understand the underlying physical principles. Magnetic microscopes using polarized soft X-rays offer a close-up view into magnetism with unique features, these include elemental sensitivity due to X-ray magnetic dichroism effects as contrast mechanism, high spatial resolution provided by state-of-the-art X-ray optics and fast time resolution limited by the inherent time structure of current X-ray sources, which will be overcome with the introduction of ultrafast and high brilliant X-ray sources. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701619 [article] Viewing spin structures with soft X-ray microscopy [texte imprimé] / Peter Fischer, Auteur . - 2011 . - pp. 14-22. Ingénierie Langues : Anglais (eng) in Materials today > Vol. 13 N° 9 (Septembre 2010) . - pp. 14-22 Mots-clés : X-ray Microscopy Magnetic microscopies Electron optics Index. décimale : 620 Essais des matériaux. Matériaux commerciaux. Station génératrice d'énergie. Economie de l'énergie Résumé : The spin of the electron and it's associated magnetic moment marks the basic unit for magnetic properties of matter [1] and [2] . Magnetism, in particular ferromagnetism and antiferromagnetism is described by a collective order of these spins, where the interaction between individual spins reflects a competition between exchange, anisotropy and dipolar energy terms. As a result the energetically favored ground state of a ferromagnetic system is a rather complex spin configuration, the magnetic domain structure3. Magnetism is one of the eldest scientific phenomena, yet it is one of the most powerful and versatile utilized physical effects in modern technologies, such as in magnetic storage and sensor devices. To achieve highest storage density, the relevant length scales, such as the bit size in disk drives is now approaching the nanoscale and as such further developments have to deal with nanoscience phenomena [4] , [5] , [6] , [7] , [8] and [9] . Advanced characterization tools are required to fully understand the underlying physical principles. Magnetic microscopes using polarized soft X-rays offer a close-up view into magnetism with unique features, these include elemental sensitivity due to X-ray magnetic dichroism effects as contrast mechanism, high spatial resolution provided by state-of-the-art X-ray optics and fast time resolution limited by the inherent time structure of current X-ray sources, which will be overcome with the introduction of ultrafast and high brilliant X-ray sources. DEWEY : 620 ISSN : 1369-7021 En ligne : http://www.sciencedirect.com/science/article/pii/S1369702110701619

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