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  • American Association for the Advancement of Science (AAAS)  (4)
  • 1995-1999  (4)
  • 1965-1969
  • 1
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    Chiral magnetic domain structures in ultrathin FePd films (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-26
    Description: The magnetization profile of magnetically ordered patterns in ultrathin films was determined by circular dichroism in x-ray resonant magnetic scattering (CDXRMS). When this technique was applied to single crystalline iron palladium alloy layers, magnetic flux closure domains were found whose thickness can constitute a large fraction ( approximately 25 percent) of the total film.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Durr -- Dudzik -- Dhesi -- Goedkoop -- van der Laan G -- Belakhovsky -- Mocuta -- Marty -- Samson -- New York, N.Y. -- Science. 1999 Jun 25;284(5423):2166-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Daresbury Laboratory, Magnetic Spectroscopy Group, Warrington WA4 4AD, UK. University of York, York YO1 5DD, UK. University of Amsterdam, Valckenierstraat 65, NL 1018 XE Amsterdam, Netherlands. CEA/Grenoble, Service de Physique des Materia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10381879" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Two-dimensional magnetic particles (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-10-17
    Description: Single two-dimensional (2D) atomically thick magnetic particles of cobalt and iron with variable size and shape were fabricated by combining a mask technique with standard molecular beam epitaxy. Reduction of the lateral size of in-plane magnetized 2D cobalt films down to about 100 nanometers did not essentially modify their magnetic properties; although the separation of boundaries decreased greatly, neither domain penetrated the particle, nor was any sizable shape anisotropy observed. The mutual interaction of 2D cobalt particles was negligible, and the magnetic state of a single particle could be switched without modifying the state of the neighbors. Perpendicularly magnetized iron particles did not exhibit such responses. These results suggest that only a few atoms forming a 2D in-plane magnetized dot may provide a stable elementary bit for nanorecording.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stamm -- Marty -- Vaterlaus -- Weich V -- Egger -- Maier -- Ramsperger -- Fuhrmann -- Pescia -- New York, N.Y. -- Science. 1998 Oct 16;282(5388):449-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉C. Stamm, F. Marty, A. Vaterlaus, V. Weich, S. Egger, U. Maier, D. Pescia, Laboratorium fur Festkorperphysik, Eidgenossische Technische Hochschule (ETH) Zurich, CH-8093 Zurich, Switzerland. U. Ramsperger, National Research Institute for M.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9774266" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Primitive boron isotope composition of the mantle (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-07-21
    Description: Boron isotope ratios are homogeneous in volcanic glasses of oceanic island basalts [-9.9 +/- 1.3 per mil, relative to standard NBS 951 (defined by the National Bureau of Standards)], whereas mid-oceanic ridge basalts (MORBs) and back-arc basin basalts (BABBs) show generally higher and more variable ratios. Melts that have assimilated even small amounts of altered basaltic crust show significant variations in the boron isotope ratios. Assimilation may thus account for the higher boron ratios of MORBs and BABBs. A budget of boron between mantle and crust implies that the primitive mantle had a boron isotope ratio of -10 +/- 2 per mil and that this ratio was not fractionated significantly during the differentiation of the mantle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chaussidon, M -- Marty, B -- New York, N.Y. -- Science. 1995 Jul 21;269(5222):383-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17841261" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Helium Isotopic Evidence for a Lower Mantle Component in Depleted Archean Komatiite (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-07-05
    Description: Archean magnesium-rich komatiites require hot and presumably deep mantle sources, but their trace-element composition and radiogenic isotope composition are similar to those of modern mid-ocean ridge basalts, which originate in the upper mantle. The isotopic composition of helium extracted by sequential crushing of fresh olivines separated from two Archean and one mid-Proterozoic komatiites varies over three orders of magnitude, between a radiogenic end-member rich in helium-4 and a component rich in helium-3. Such helium-3 enrichment suggests the presence of a lower mantle component in Archean komatiites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Richard -- Marty -- Chaussidon -- Arndt -- New York, N.Y. -- Science. 1996 Jul 5;273(5271):93-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉D. Richard, B. Marty, M. Chaussidon, CNRS, Centre de Recherches Petrographiques et Geochimiques, Rue Notre-Dame des Pauvres, B.P. 20, 54501 Vandoeuvre Cedex, and Ecole Nationale Superieure de Geologie, 94 Avenue De Lattre de Tassigny, 54001 Nancy Cedex, France. N. Arndt, Geosciences, Unite Propre de Recherches 4661 CNRS, Universite de Rennes, 35042 Rennes Cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688058" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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