Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles: DFG German National Licenses  (6)
  • 1995-1999
  • 1985-1989  (6)
  • 1987  (6)
Source
  • Articles: DFG German National Licenses  (6)
Material
Years
  • 1995-1999
  • 1985-1989  (6)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Dimensional effects in Ni-Cr multilayered thin films (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 4064-4066 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The dimensionality of Ni-Cr multilayered structures (MLS) was studied from the variation of the temperature dependence of the saturation magnetization Ms with the Ni layer thickness. Since NiCr alloys containing more than 12% Cr are nonmagnetic the thickness of the interfaces and pure Ni regions can be obtained from the measured value of Ms by modeling the MLS and determining the thickness of the pure Ni regions. Assuming that the pure Ni regions are isolated sufficiently to behave independently, comparison was made with several theories. It was found that the observed behavior is similar to that described by the theory of Davis and Keffer with a surface anisotropy energy of about 0.1 that of the exchange energy. This theory uses nonperiodic boundary conditions and assumes a surface anisotropy field which causes the partial pinning of the surface spins. The magnetization decrease calculated with this theory falls off less rapidly with film thickness than other theories. At high fields the magnetization and Curie temperatures of the MLS having 20 A(ring) or less of Ni is found to be field dependent. This is indicative that a considerable amount of the magnetic moments arise from itinerant d electrons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338528
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Ferromagnetic resonance in Co-Cr multilayer films (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 4290-4292 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic properties of multilayered Co/Cr films have been investigated by ferromagnetic resonance (FMR) and compared to magnetization studies carried out on a SQUID magnetometer. The interesting feature observed in most of the spectra was that along with an intense resonance corresponding to the uniform mode, several weak but well-defined peaks were observed at higher magnetic fields. The angular and temperature variations of the line positions indicates that these are due to cobalt atoms in the interface. In conjunction with static magnetization, the FMR studies of the main resonance lead us to believe that there may be long-range magnetic effects which result in additional anisotropy fields.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338448
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Isomeric yield ratio of146La and84Br in thermal neutron induced fission of235U (1987)
    Springer
    Journal of radioanalytical and nuclear chemistry 119 (1987), S. 101-107 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The independent isomeric yield ratio of146La and84Br in the thermal neutron fission of235U is reported for the first time with the values of 0.058±0.017 and 0.62±0.20, respectively. the yields have been determined using a fast radiochemical separation technique followed by γ-spectroscopy. The deduced rms angular momentum of84Br is 5.9 ℏ from the statistical model analysis and the rms angular momentum of146La is found too low to be determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02169838
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Stationary phases (1987)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 328 (1987), S. 37-40 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A simple method for the preparation of a silica immobilized pentafluorophenyldimethylsilyl ligand (PFPS phase) is described. The chromatographic properties of this material have been compared with those of a phenyldimethylsilyl stationary phase (PDMS phase). Differentation of the results shows that the PFPS has the character of a reversed and a normal phase, whereas the PDMS phase may be only used in reversed-phase liquid chromatography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00560944
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Stationäre Phasen (1987)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 328 (1987), S. 41-45 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A method is described for the preparation of a safrole chemically bonded phase to silica gel. Its structure on silica has been investigated by FTIR, solid state FT-13CNMR and29SiNMR spectra. The safrole phase has strong π-donor ligands on the silica surface so that the separation of nitroaromatic compounds can be demonstrated as a donor-acceptor complex-chromatographic separation in high-pressure liquid chromatography. A comparison of retentions on the safrole phase, 3-phenylpropylmethylsilyl phase and RP-18 is also described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00560945
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Stationary Phase 5. Evaluation of Stationary Phases for HPLC of ExplosivesPresented at the International Symposium on Chromatography, Tamsui, April 1986. (1987)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 12 (1987), S. 26-28 
    Details
    ISSN: 0721-3115
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The retentions of 11 explosives on two commercially RP-18 and Si 100 stationary phases and one prepared 3-[9′-(10′-methylanthryl)]- propylsilane stationary phase (MAPS-phase) were examined by modified mobile phases. The evaluation of these three stationary phases results as follows: (1)Most explosives were effectively separated on a column of MAPS-phase not only with methanol/water (75/25-85/15) as mobile phase but also with n-hexane/dichloromethane (75/25) as mobile phase.(2)Few explosives were effectively separated on a column of RP-18 with methanol/water (75/25-85/15) as mobile phase.(3)The separation of most explosives on Si 100 was achieved only under normal phase condition such as n-hexane/dichloromethane (75/25) as mobile phase.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prep.19870120106
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...