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  • 1
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance assignment of the vinyl hydrogens of phosphoenolpyruvate. Stereochemistry of the enolase reaction (1970)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 92 (1970), S. 4095-4098 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00716a044
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  • 2
    Electronic Resource
    Electronic Resource
    Microscopic simulation of chemical oscillations in homogeneous systems (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 5747-5750 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A microscopic computer experiment is set up to investigate the statistical properties of far from equilibrium homogeneous chemical systems undergoing instabilities. Sustained periodic behavior of limit cycle type is observed. Both the frequency and the amplitude of the oscillations are found to be in good agreement with the macroscopic description. A comparison with the stochastic theory of chemical systems based on master equation formalism is also carried out. The dynamical and static correlation functions obtained by these two procedures are in very good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.459568
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  • 3
    Electronic Resource
    Electronic Resource
    Standardization of Strong Electromagnetic Fields (1961)
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 49-50 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In principle, standard flux densities of the specified value (1-20 mW./sq.cm.) can be established by radiating a known power from a transmitter under conditions which permit the calculation of the field strength or flux density at the receiver. This method is a convenient one, for example, at ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/189049a0
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  • 4
    Electronic Resource
    Electronic Resource
    Structural Differences between the Alkali Imidodisulphates (1965)
    [s.l.] : Nature Publishing Group
    Nature 207 (1965), S. 186-187 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Negative piezo-electric tests5 imply that at room temperature the structure of neither ammonium nor rubidium imidodisulphate departs significantly from centrosym-metry. From X-ray diffraction examination, the pseudo-lattice [110] axis of ammonium imidodisulphate shows at 300 K a true repeat ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/207186b0
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  • 5
    Electronic Resource
    Electronic Resource
    Microscopic simulation of chemical bistability in homogeneous systems (1996)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 105 (1996), S. 8257-8261 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Microscopic simulation is used to clarify the status of stochastic theories of homogeneous chemical systems operating in the multiple steady state region. The results demonstrate the failure of the Langevin approach, but show excellent agreement with the master equation formulation. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.472679
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  • 6
    Electronic Resource
    Electronic Resource
    Structure and magnetic properties of exchange-spring Sm–Co/Co superlattices (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 380-382 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present structural and magnetic properties of epitaxial Sm–Co/Co superlattice films prepared via magnetron sputtering. X-ray diffraction and cross-sectional transmission electron microscopy show that the films are structurally coherent. The oriented nature of the interleaved ferromagnetically "hard" and "soft" layers comprising the superlattice provides a realization of the ideal nanostructure of exchange-spring magnets as well as a model system to study layer thickness dependences of the magnetic properties. The superlattice films have an effective fourfold, in-plane magnetic anisotropy. Room-temperature hysteresis loops are relatively square and the demagnetization of the Co is reversible, as expected of exchange-spring magnets with aligned hard magnet layers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.120743
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  • 7
    Electronic Resource
    Electronic Resource
    Coexistence of magnetism and superconductivity in epitaxial GdN/W/NbN/W (100) and related NbN/W (100) multilayers (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 84 (1998), S. 940-944 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic and superconducting properties of epitaxial, (100)-oriented GdN/W/NbN/W multilayers have been characterized. We find that the interfacial layer of W permits the GdN/NbN layers to be grown smoothly. We report large flux trapping effects in the magnetic hysteresis loops measured below the superconducting transition temperature (Tc) of the multilayer, indicating the coexistence of magnetism and superconductivity down to layer thicknesses of 40 and 22 Å for the NbN and GdN, respectively. Nonmagnetic NbN/W multilayers were also studied; in these multilayers, Tc is enhanced considerably above that of a single NbN layer due to coupling of the superconducting layers across the W spacers. This behavior is fitted to a model which explicitly includes interlayer coupling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.368169
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  • 8
    Electronic Resource
    Electronic Resource
    High-coercivity, c-axis oriented Nd2Fe14B films grown by molecular beam epitaxy : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 4441-4443 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin films of Nd2Fe14B with a c-axis orientation and bulklike magnetic properties have been grown via molecular beam epitaxy with thicknesses as low as 300 Å. The films are grown on single-crystal MgO(100) wafers overcoated with epitaxial Mo(100) buffer layers. The 2–14–1 phase is crystallized either by sequential deposition or codeposition of Fe, Nd, and B from pure elemental evaporation sources onto 600–700 °C substrates. The structure of each film was characterized in situ with reflection high-energy electron diffraction and ex situ with x-ray diffraction. For the sequentially deposited films, the in-plane saturation field is 60–70 kOe at 300 K, consistent with the bulk anisotropy field of 73 kOe. The spin–reorientation transition at 135 K can also be clearly seen in the in-plane and out-of-plane magnetization versus temperature data. The out-of-plane coercivities typically range from 15 to 20 kOe at 20 K, and from 3 to 8 kOe at 300 K. Codeposition results in a multiphase structure, with Nd2Fe14B show the minority phase. The multiphase structure results in reduced perpendicular anisotropy. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364969
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  • 9
    Electronic Resource
    Electronic Resource
    Magnetic stability in exchange-spring and exchange-bias systems after multiple switching cycles (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 6817-6819 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the magnetic stability in exchange-bias and exchange-spring systems during repeated reversal of the pinned layer. The samples were prepared by epitaxial sputter deposition. The exchange-biased system consists of a combination of ferromagnetic and antiferromagnetic Fe/Cr superlattices. The exchange-spring system is a bilayer structure made of hard Sm–Co and soft Fe ferromagnetic layers. The magnetic properties were investigated using the magneto-optic Kerr effect during repeated reversal of the soft layer magnetization by field cycling up to 107 times. The experimentally observed decay behaviors are discussed in terms of microstructure and spin configuration of the pinning layers. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1359787
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  • 10
    Electronic Resource
    Electronic Resource
    Disorder-driven hysteresis-loop criticality in Co/CoO films (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 89 (2001), S. 7466-7468 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The effect of magnetic disorder on the magnetization reversal process in thin Co/CoO films has been investigated. The antiferromagnetic CoO layer allows a reversible tuning of the magnetic disorder by simple temperature variation. For temperatures above a critical temperature Tc, we observe a discontinuous magnetization reversal, whereas smooth magnetization loops occur for T〈Tc. Our measurements establish the existence of a disorder-driven critical point in the nonequilibrium phase diagram. In addition, we observe scaling behavior in the vicinity of the critical point and determine the critical exponents to β=0.022±0.006 and βδ=0.30±0.03. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1361272
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