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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic properties of Y3−x−yPrxLuyFe5O12 garnet films : 38th Annual Conference ion Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 6763-6765 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this work we report on the magnetic and low-field ferromagnetic resonance properties of iron garnet films of general composition Y3−x−yPrxLuyFe5O12 for 0≤x≤0.3 and 0≤y≤0.7. The films were grown onto [111] gadolinium gallium garnet substrates by liquid phase epitaxy. Both growth-induced and cubic anisotropies were investigated by means of torque magnetometry and ferromagnetic resonance at room temperature. The growth-induced anisotropy constant Ku and the first order magnetocrystalline cubic constant K1 exhibit a linear dependence with the praseodymium content. The addition of Lu with Pr enhances both Ku and K1 dependence on the doping, yielding ΔKu/x∼−2.4×105 erg/cm3 and ΔK1/x∼−1.1×105 erg/cm3. The addition of praseodymium in the garnet films significantly improves the soft magnetic properties. In-plane coercivity is about 0.1 Oe and there is a negligible anisotropy in the plane of the film. The effect of the doping by praseodymium and lutetium on the saturation magnetization is insignificant at room temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357001
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic properties of praseodymium-substituted iron garnet films (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 74 (1993), S. 7450-7453 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have investigated the growth conditions, the magnetic properties and low-field ferromagnetic resonance (FMR) properties of praseodymium-substituted garnet films. Films of general composition Y3−x−yPrxLuyFe5O12, were grown by liquid phase epitaxy onto [111]-oriented Gd3Ga5O12 substrates. Vibrating sample magnetometry, torque magnetometry and FMR were used to measure saturation magnetization and the cubic and induced anisotropy constants. It is shown that the uniaxial anisotropy constant Ku and the first order magnetocrystalline anisotropy constant K1, have a strong dependence upon the praseodymium content. The addition of praseodymium in the garnet films improves the soft magnetic properties. The effect of the doping by praseodymium on the saturation magnetization is insignificant at room temperature. In-plane coercivity is about 0.1 Oe.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.354967
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A noncontacting technique for measuring surface tension of liquids (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2048-2050 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We have developed a novel instrument for measuring the surface tension of liquids. It utilizes ultrasonic and optical methods to excite and detect a capillary wave packet. A focused ultrasonic transducer is used to generate a mound on the surface of a liquid. Capillary waves propagate radially outward from the mound, and a noncontacting confocal optical microscope measures the amplitude of the wave packet at any distance away from the excitation point. We invert the measured wave amplitude to obtain the dispersion relation of the capillary waves and hence the surface tension.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143164
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    Paper (German National Licenses)
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