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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic anisotropies in Fe(110) films on W(110) (abstract) : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 5216-5216 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic anisotropies in epitaxial Fe(110) films on W(110) were analyzed using torsion oscillation magnetometry (TOM) in situ in UHV. Films with clean surfaces and films coated by Cu, Ag, and Au were analyzed. Out-of-plane anisotropies were determined by standard TOM methods, in-plane anisotropies from hard-axis magnetization loops. All anisotropies showing a clear linear dependence on reciprocal film thickness, a straightforward separation of volume- and surface-type anisotropies could be performed. Volume anisotropies can be explained as a superposition of standard fourth-order magnetocrystalline and of strain anisotropies, caused by residual strain of a Fe coincidence lattice on W. Surface anisotropies, both in-plane and out-of-plane, are connected by Néel's model with bulk magnetoelastic constants, to a surprisingly good approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348080
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of magnetic anisotropies in ultrathin films by magnetometry in situ in UHV (invited) : The 5th Joint MMM−Intermag Conference (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5764-5768 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic anisotropies of Ni(111) films on Re(0001) and Fe(110) films on W(110) were analyzed using torsion oscillating magnetometry in UHV. They can be decomposed in volume contributions that are independent of thickness and surface state and can be explained as a superposition of shape, magnetocrystalline and residual strain anisotropies, and surface contributions, which scale with 1/d and depend sensitively on the state of the surface. Néel's phenomenological anisotropy model provides a useful connection between different components of surface anisotropies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350155
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  • 3
    Electronic Resource
    Electronic Resource
    Critical phenomena in the two-dimensional XY magnet Fe(100) on W(100) : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 4984-4986 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We experimentally investigated the magnetic phase transition of the in-plane magnetized double-layer Fe on W(100). This epitaxial system approximates the theoretical two-dimensional (2D) XY model to a large extent because of its pseudomorphic growth and structural stability. We measured the magnetization of W(100)/Fe in the vicinity of the Curie temperature TC using the diffraction of spin polarized electrons and the magnetization of W(100)/Fe/Ag in a wider temperature interval using conversion electron Mössbauer spectroscopy. The temperature dependence of the spontaneous magnetization follows a power law with an exponent β=0.22±0.03 in the temperature regime 0.3≤T/TC≤0.99. The susceptibility χ(T(approximately-greater-than)TC) can be fitted alternatively by a power law with an unusually large exponent γ≈5 or by an exponential law χ∝exp(b/(square root of)T−TC), as predicted for the 2D XY model, with b=1.6. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361923
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  • 4
    Electronic Resource
    Electronic Resource
    Perpendicular magnetization and dipolar antiferromagnetism in double layer nanostripe arrays of Fe(110) on W(110) (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 3211-3213 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fe(110) nanostripe arrays, consisting of alternating monolayer and double layer stripes, have been grown by step flow on vicinal W(110) substrates. The magnetic easy axis switches from in-plane in the monolayer to perpendicular in the double layer stripes. The data strongly suggest that magnetostatic interactions induce antiferromagnetic order in the double layer nanostripe array. It can be switched into a ferromagnetic arrangement by low external fields. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.121552
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetism of interfaces between Fe(110) and noble metals (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5328-5330 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Changes of magnetic surface moment and out-of-plane surface anisotropies of Fe(110) surfaces, caused by coating with Cu, Ag, and Au, are determined by torsion oscillation magnetometry of epitaxial Fe(110) films on W(110) in UHV. Changes of magnetic moment Δm, normalized by the monolayer moment mML, are given by Δm/mML=0.00 for Cu coating, 0.01 for Ag coating, and −0.09 for Au coating, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342526
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  • 6
    Electronic Resource
    Electronic Resource
    Monolayer ferromagnetism of Fe(110) on W(110) studied by Mössbauer spectroscopy (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3652-3654 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Fe(110) films in the monolayer regime were prepared at 300 K in UHV on W(110). Pseudomorphic structure and layer-by-layer growth were established using LEED, AES, and conversion electron Mössbauer spectroscopy (CEMS). For the pseudomorphic monolayer, ferromagnetic order was established using CEMS below a monolayer Curie temperature TC (1)=(210±10) K=0.20TC(∞) for a free monolayer and TC(1)=(296±1) K=0.28TC(∞) for a Ag-coated monolayer, respectively. Magnetic hyperfine fields Bhf(T) could be measured for T≥90 K. Ground-state values could be determined by extrapolation to Bhf(0)=(10±1) T for the free and Bhf(0)=(11.9±0.3) T for the Ag-coated monolayer, respectively. A critical region 270〈T〈300 K was analyzed to some detail for the Ag-coated monolayer. In this region, the CEMS spectrum contains a magnetic and a nonmagnetic component. Transition to the paramagnetic phase occurs by transition of intensity from the magnetic to the nonmagnetic line, whereas Bhf of the magnetic component remains finite with approach to TC. Beyond the true monolayer, double layer and monolayer components can be distinguished in the CEMS spectra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340673
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  • 7
    Electronic Resource
    Electronic Resource
    Surface magnetism of oxygen and hydrogen adsorption on Ni(111) (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3664-3666 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The changes of surface magnetization and of surface anisotropies of Ni(111) surfaces during adsorption of oxygen and hydrogen were measured at room temperature using torsion oscillation magnetometry in situ in UHV (UTOM) of ultrathin epitaxial Ni(111) films on Re(0001). In the case of oxygen, a rapid chemisorption process is connected with an initial change in magnetic moment per O atom, Δμox=−4.5μNi (bulk Ni moment μNi), which is reduced to −3.8μNi in the saturated chemisorption state (θ= (1)/(3) ). This chemisorption is followed by a slow oxidation up to three layers of epitaxial NiO, connected with a change of the film moment Δm=−2.7mML (moment mML of bulk Ni monolayer). Surface anisotropy fields are reduced from (10±1) T (free surface) to (0±1) T both for chemisorbed and oxidized surfaces. For the case of hydrogen, saturation adsorption at room temperature (θ= (1)/(2) ) results in ΔμH=−1.6μNi and a reduction of the surface anisotropy field to (3±1) T.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340678
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  • 8
    Electronic Resource
    Electronic Resource
    Magnetometry of the Ni(111)Cu(111) interface
    Amsterdam : Elsevier
    Solid State Communications 53 (1985), S. 565-567 
    Details
    ISSN: 0038-1098
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0038-1098(85)90632-5
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  • 9
    Electronic Resource
    Electronic Resource
    Periodic lattice distortions in epitaxial films of Fe(110) on W(110)
    Amsterdam : Elsevier
    Surface Science 116 (1982), S. 539-548 
    Details
    ISSN: 0039-6028
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0039-6028(82)90363-6
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  • 10
    Electronic Resource
    Electronic Resource
    Magnetometric analysis of the interaction of Ni(111) with oxygen
    Amsterdam : Elsevier
    Surface Science 193 (1988), S. 94-108 
    Details
    ISSN: 0039-6028
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0039-6028(88)90325-1
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