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  • 1
    Digitale Medien
    Digitale Medien
    The Reaction between Basic Aluminum Sulfate and Hide Substance. (1941)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 45 (1941), S. 166-177 
    Details
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/j150406a015
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  • 2
    Digitale Medien
    Digitale Medien
    Permeability and magnetoimpedance in Fe77.5Si7.5B15 wire under torsional stress (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 4828-4830 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The complex permeability spectra and the magnetoimpedance (MI) are measured as a function of torsional stress and torsion angle in Fe77.5Si7.5B15 amorphous wire. The permeability spectra show irreversible and reversible relaxation with relaxation frequencies of 40 and 300 kHz, respectively. The static permeability resulted from the irreversible magnetization decreases with torsion angle for a negative direction, but increases with a positive angle. The MI profile shows one symmetric peak for the positive torsion angle, which is same MI behavior as in the case of zero torsion. However, there is a hysteresis in the MI profile for negative torsion, that is, there are two asymmetric peaks for decreasing field and one peak for increasing field. © 2000 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.373173
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  • 3
    Digitale Medien
    Digitale Medien
    Effect of neutron irradiation on soft magnetic properties in amorphous FeCuNbSiB alloy (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 7115-7117 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The changes in soft magnetic properties on amorphous Fe73.5Cu1Nb3Si13.5B9 alloy after neutron irradiation are studied by complex permeability spectra, magnetoimpedance ions and M–H curve measurements. The total integration fluence of fast neutrons (nf,En〉1 MeV) is varied from 1.92×1014nf cm−2 to 4.85×1016nf cm−2. Two different types of relaxation processes in permeability spectra, which were observed in low and high frequency regions, are related to the domain wall motion and the rotational magnetization, respectively. As neutron irradiation fluence increases, the permeability due to domain wall motion decreases but the permeability due to rotational magnetization increases. The anisotropy field estimated from magnetoimpedance profile decreases with neutron irradiation fluence. The measurement of M–H curves shows the improvement of softness after neutron irradiation of 4.85×1016nf cm−2, due to the enhancement of rotational magnetization. © 2000 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.372948
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  • 4
    Digitale Medien
    Digitale Medien
    The change of magnetic properties in nanocrystalline Fe88Zr7B4Cu1 alloy by cooling rate : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 5153-5155 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have investigated the effect of cooling rate, followed immediately after the isothermal annealing, on the magnetic properties of melt-spun Fe88Zr7B4Cu1 alloy. As the cooling rate is increased, the effective permeability, 2×104, improved by 50% on annealing at around 650 °C. The remanence ratio is also found to concomitantly decrease with the increasing cooling rate. The increase of permeability and decrease of remanence ratio are consistent with the expected suppression of the induced magnetic anisotropy. From an analysis of the transmission electron microscopy micrographs, and the x-ray diffraction spectral intensities, we find that the volume fraction of the amorphous matrix to that of the nanocrystallized magnetic entities to be about 20%, at which the permeability has the maximum value for this system. Scanning electron microscopy and antiferromagnetic investigations show a much smoother surface morphology with a finer grain distribution in the rapidly quenched sample. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.361538
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  • 5
    Digitale Medien
    Digitale Medien
    The magnetization study of melt-spun ribbons of B containing TbFe2 alloys : The 7th joint MMM-intermag conference on magnetism and magnetic materials (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 7142-7144 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have carried out the magnetization study of melt-spun ribbons of (Tb0.33Fe0.67)1−xBx (x=0, 0.02, 0.05, 0.1, and 0.15) alloys. The temperature dependence of magnetization was measured using a superconducting quantum interference device and a vibrating-sample magnetometer during heating from 5 to 800 K, with an applied field of either 10 or 50 kOe. The present study shows the existence of noncollinear magnetics structures. From an analysis of the approach to saturation magnetization, the average magnetic moment μa, random anisotropy field Hr, and local random anisotropy constant KL have been extracted. It is found that μa decreases from 1.68 (x=0) to 1.33 μB (x=0.15) and KL increases with increasing B concentration. This result suggests that the addition of B seems to increase the random anisotropy and hence to decrease the magnetic order, resulting a sperimagnet with large spread angle. © 1998 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.367833
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  • 6
    Digitale Medien
    Digitale Medien
    Spin-wave excitations in amorphous Fe78B13Si9 (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 4083-4085 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Inelastic neutron scattering measurements have been used to study the long wavelength spin dynamics of the high Tc amorphous ferromagnetic alloy Fe78B13Si9 (Metglas 2605S2). Spin waves were observed over the accessible wave-vector range of 0.06 A(ring)−1≤q≤0.12 A(ring)−1, for temperatures between 473 K (0.67 Tc) and 705 K (0.99 Tc). The magnon dispersion curves exhibit the conventional quadratic relationship E=D(T)q2+Δ, typical of an isotropic ferromagnet, where the small energy gap Δ≈0.05 meV is attributed primarily to the dipole-dipole interaction. An estimate of the T=0 value of D≈156 meV A(ring)2 was obtained from a plot of D(T) vs T extrapolated to low temperatures, while the Curie temperature of 710 K was obtained from the extrapolation of D(T) to zero at high temperatures. Spin-wave linewidth data for T/Tc≈0.95 showed the q4 wave-vector dependence expected for magnon-magnon interactions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.340556
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  • 7
    Digitale Medien
    Digitale Medien
    Influence of exchange energy and magnetic anisotropy on the nanocrystalline alloy : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 4649-4651 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: We have studied the influence of exchange energy and magnetic anisotropy on the magnetic properties of nanocrystalline materials. Amorphous ribbons of composition Fe88Zr7B4Cu1 have been annealed between about 500 and 700 °C. Temperature dependence of magnetization was carried out and nanocrystallized magnetic entities were investigated using the mean field theory and random anisotropy model obtained ferromagnetic correlation length and magneto-crystalline anisotropy constant. The best soft magnetic properties were observed annealed at 650 °C for the smallest magneto-crystalline anisotropy constant (K1) of about 1.40×104 erg/cm3. We obtained average magnetic anisotropy of 0.81 erg/cm3 which is almost negligible compared with K1 at an annealing temperature of 650 °C. The local magneto-crystalline anisotropy is randomly averaged out by strong exchange interaction so that this mechanism provides the basis for the good soft magnetic properties. © 1997 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.365513
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  • 8
    Digitale Medien
    Digitale Medien
    One-electron energies in the presence of electron-phonon interactions
    Amsterdam : Elsevier
    Journal of Physics and Chemistry of Solids 47 (1986), S. 887-893 
    Details
    ISSN: 0022-3697
    Schlagwort(e): Electron-phonon interaction
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-3697(86)90060-0
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  • 9
    Digitale Medien
    Digitale Medien
    Superconducting properties of high-Tc Bi"1"."6Pb"0"."4Ca"2Sr"2Cu"3Oy superconductor
    Amsterdam : Elsevier
    Physica B: Physics of Condensed Matter 169 (1991), S. 657-658 
    Details
    ISSN: 0921-4526
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4526(91)90374-N
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  • 10
    Digitale Medien
    Digitale Medien
    The crystallization and phase transformation of stabilizer-doped zirconia powders with H"2SO"4 additive
    Amsterdam : Elsevier
    Journal of Crystal Growth 96 (1989), S. 96-100 
    Details
    ISSN: 0022-0248
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Chemie und Pharmazie , Geologie und Paläontologie , Physik
    Materialart: Digitale Medien
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-0248(89)90278-9
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