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  • 1995-1999  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Growth temperature dependence of the magnetic and structural properties of epitaxial Fe layers on MgO(001) (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 84 (1998), S. 1499-1503 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have studied the growth and magnetic properties of molecular beam epitaxy grown layers of bcc Fe(001) on MgO(001) substrates at a wide range of temperatures. For growth temperatures in the range 80−595 K, the iron forms islands which increase in lateral size with increasing temperature. Completed films in the same temperature range show the magnetic properties expected for a system with biaxial anisotropy, and a coercivity of 〈10 Oe. The value of the first cubic anisotropy constant divided by the magnetization (K1/M) remained constant. No evidence for uniaxial magnetic anisotropy in the films was found. Above 595 K, the films' structure and magnetic properties changed dramatically to those characteristic of a particulate system. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.368215
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Wavelength dependence of the magnetic resolution of the magneto-optical near-field scanning tunneling microscope (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 73 (1998), S. 2669-2671 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A magneto-optical near-field scanning tunneling microscope is used to image the prewritten magnetic domain structure of a Pt/Co multilayer. A semiconducting tip acts as a local photodetector to measure the magnetic circular dichroism signal coming from the magnetic sample. The resolution of the magnetic imaging is given by the photoelectrically active volume of the tip. Reduction of the laser light wavelength resulted in a factor of 4 improvement of the magnetic resolution. Based on a sound and applicable definition we estimate the resolution to be (60±35) nm for a wavelength of 532 nm. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.122548
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  • 3
    Electronic Resource
    Electronic Resource
    Large positive magnetoresistance in Cr/Ag/Cr trilayers (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 1477-1479 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Large positive magnetoresistance (LPMR) effects have been measured at temperatures T〈100 K in epitaxial Cr/Ag/Cr trilayers grown by molecular beam epitaxy. Compared to single Ag films, the magnetoresistance at 4.2 K is enhanced by nearly two orders of magnitude reaching values up to 120% in a field of 8 Tesla. This behavior is related to a drastic modification of the electron scattering at the Ag interfaces due to the presence of the buffer and cap Cr layers. The LPMR curves measured at different temperatures demonstrate a scaling behavior typical for electron transport in two-dimensional systems. The magnitude of the LPMR is a function of temperature and residual resistance ratio and is influenced by the direction of the applied magnetic field. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118567
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    Paper (German National Licenses)
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