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  • 2005-2009  (4)
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  • 2005-2009  (4)
Jahr
Fachgebiete(RVK)
  • 1
    Online-Ressource
    Online-Ressource
    Optic and acoustic modes measured in a cobalt/Permalloy exchange spring bilayer using inductive magnetometry
    AIP Publishing ; 2005
    In:  Journal of Applied Physics Vol. 97, No. 10 ( 2005-05-15)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 97, No. 10 ( 2005-05-15)
    Kurzfassung: The resonance frequencies of a cobalt (100nm)/Permalloy (50nm) exchange spring bilayer have been measured using a pulsed inductive microwave magnetometer. Two field dependent frequencies are detected which vary in relative intensity as a function of applied magnetic field. The two frequencies are identified as the optic and acoustic spin wave modes of coupled ferromagnetic films. Only over a limited range of fields are both frequencies observable. In low fields the acoustic mode is dominant, and in higher fields the optic mode gives the largest intensity. These intensity variations are explained in terms of off-resonant driving of cobalt modes by the uniform mode in Permalloy and a field dependent interfacial pinning.
    Materialart: Online-Ressource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.1849551
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2005
    ZDB Id: 220641-9
    ZDB Id: 3112-4
    ZDB Id: 1476463-5
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 2
    Online-Ressource
    Online-Ressource
    Measuring exchange anisotropy in Fe∕MnPd using inductive magnetometry
    AIP Publishing ; 2007
    In:  Journal of Applied Physics Vol. 101, No. 9 ( 2007-05-01)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 101, No. 9 ( 2007-05-01)
    Kurzfassung: Local effective fields created in Fe by MnPd through exchange anisotropy are studied using an inductive ferromagnetic resonance technique. The bilayers were prepared on single crystal MgO(001) using ion beam sputtering in high vacuum and have a highly orientated crystalline structure with a [001] orientation as determined by x-ray diffraction. Unidirectional and fourfold anisotropies are measured using a stripline resonance geometry. Experiments with the field applied along different crystalline directions indicate that the fourfold axes are well defined with magnitudes consistent with values expected for bulk Fe. Anomalies in the frequency studied as a function of applied field are interpreted as evidence for a distribution of unidirectional anisotropy field orientations and strengths.
    Materialart: Online-Ressource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.2713231
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2007
    ZDB Id: 220641-9
    ZDB Id: 3112-4
    ZDB Id: 1476463-5
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 3
    Online-Ressource
    Online-Ressource
    Calculation of spin wave mode response induced by a coplanar microwave line
    AIP Publishing ; 2007
    In:  Journal of Applied Physics Vol. 101, No. 9 ( 2007-05-01)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 101, No. 9 ( 2007-05-01)
    Kurzfassung: The geometry and method of spin wave excitation in planar waveguide inductive resonance methods is very different from that used in resonant cavity experiments, and correct interpretation of results requires an analysis which takes into account a number of features associated with the use of broadband microwave experiments. We consider aspects of a theoretical description of the resonance modes in ferromagnetic multilayers measured by a broadband inductive technique in a coplanar waveguide geometry. The effects of finite conductivity of the magnetic sample and contributions to the measured response from finite wavelength spin waves excited in this geometry are discussed. We also include the screening action of the coplanar line on the spin wave dispersion in the theory. We show that for a proper description of intensities, the theoretical model for the spin wave excitation has to include not only the contribution to intensities from the microwave current in the central conductor as did previous theories but also contributions from reverse currents in the ground half-planes of the coplanar waveguide.
    Materialart: Online-Ressource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.2710068
    Sprache: Englisch
    Verlag: AIP Publishing
    Publikationsdatum: 2007
    ZDB Id: 220641-9
    ZDB Id: 3112-4
    ZDB Id: 1476463-5
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
  • 4
    Online-Ressource
    Online-Ressource
    Perth, Western Australia
    Elsevier BV ; 2008
    In:  Cities Vol. 25, No. 4 ( 2008-8), p. 243-255
    Details
    In: Cities, Elsevier BV, Vol. 25, No. 4 ( 2008-8), p. 243-255
    Materialart: Online-Ressource
    ISSN: 0264-2751
    URL: Article
    DOI: 10.1016/j.cities.2008.01.002
    RVK:
    RB 10627 C581
    Sprache: Englisch
    Verlag: Elsevier BV
    Publikationsdatum: 2008
    ZDB Id: 2001540-9
    Standort Signatur Einschränkungen Verfügbarkeit
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    Online-Ressource
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