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  • 1
    Digitale Medien
    Digitale Medien
    Magnetic properties and structure change from tetragonal to hexagonal for the rapidly quenched SmTiFe11 alloy ribbons (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5965-5967 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Structure and magnetic properties of the rapidly quenched SmTiFe11 alloy ribbons fabricated under various quenching rates were systematically examined. Phase transformation from an equilibrium ThMn12-type structure (tetragonal) to a metastable TbCu7-type disordered structure (hexagonal) was found for the ribbons fabricated around the roll velocity, VR(approximately-equal-to)30 m/s. Magnetocrystalline anisotropy changed from uniaxial (Ku1=5.0×107 erg/cm3) to in-plane anistropy in accordance with the structure change from ThMn12- to TbCu7-type structure. Ms and Tc varied from 125 emu/g and 320 °C (ThMn12 type) to 114 emu/g and 242 °C (TbCu7 type), respectively. The maximum hard magnetic properties for SmTiFe11 alloy ribbons, iHc=3 kOe, (BH)max=3 MGOe, were obtained for the ribbons with a ThMn12-type structure.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.342164
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  • 2
    Digitale Medien
    Digitale Medien
    Perpendicular magnetic anisotropy and magneto-optical properties of evaporated (Fe,Co)–rare-earth amorphous binary alloy films (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5492-5494 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The dependence of perpendicular magnetic anisotropy on temperature and composition has been investigated for various (Fe,Co)–rare-earth amorphous binary alloy films prepared by evaporation. The temperature dependence of the perpendicular magnetic anisotropy is proportional to the third power of the rare-earth sublattice magnetization. The perpendicular magnetic anisotropy consists of two terms related to concentration. One is proportional to the rare-earth content and the other to its square. Both terms can be explained by a large rare-earth single-ion anisotropy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.342310
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  • 3
    Digitale Medien
    Digitale Medien
    Time-dependent coupled cluster approach: Excitation energy calculation using an orthogonally spin-adapted formalism (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 1486-1501 
    Details
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: In the time-dependent coupled cluster approach the excitation energies can be obtained as eigenvalues of a generally non-Hermitian matrix characterizing the homogeneous part of a linear response equation. This matrix consists of the Hermitian configuration interaction part as well as of a non-Hermitian part which describes the "renormalization'' due to ground state correlations. The relationship between a singular behavior of the ground state coupled cluster equations and the existence of vanishingly small excitation energies in the linear response formalism is pointed out. The explicit form of the required matrix elements in the orthogonally spin-adapted version of the theory is given for configuration spaces restricted to single and double excitations. A numerical test of the formalism for π-electron models of trans-butadiene and benzene is carried out and the relationship of the time-dependent coupled cluster approach with other many body approaches to excitation energies calculation is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.451241
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  • 4
    Digitale Medien
    Digitale Medien
    Magnetic relaxation in amorphous (Fe,Co)100−xBx alloys (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3575-3577 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The disaccommodation and the uniaxial magnetic anisotropy induced by magnetic annealing were studied for rapidly quenched amorphous Fe100−xBx (12≤x≤25) and Co100−xBx (17≤x≤30) alloys. The disaccommodation exhibits a maximum between 150–250 °C for Fe-B and 50–250 °C for Co-B alloys. The compositional dependence of both disaccommodation and induced magnetic anisotropy constant exhibits an anomaly at x=20. The origin of disaccommodation is discussed in connection with the induced magnetic anisotropy. Further, the compositional dependence of induced magnetic anisotropy is discussed based on the compositional short-range ordering.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.335011
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  • 5
    Digitale Medien
    Digitale Medien
    Spin glass in Fe-Ni Invar alloys (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3456-3458 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Initial ac susceptibility χ was examined in the temperature range from 4.2 K to Curie temperatures for polycrystalline Fe100−xNix (20≤x≤50) alloys. The reentrant spin glass is found in x=30–45 alloys. The dependence of the freezing temperature Tg on the intensity of driving magnetic field (ac: 0–0.26 Oe; dc: 0–10 Oe) and on the frequency (140–9200 Hz) was studied for the Fe65Ni35 alloy. A strong magnetic relaxation is observed below Tg. These results are discussed based on the cluster model.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.335075
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  • 6
    Digitale Medien
    Digitale Medien
    Magnetic characteristics of 3d transition-metal–mica intercalation compounds (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5766-5768 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: The magnetic properties of the M-mica intercalation compounds (M=Mn,Fe,Co, and Ni) in which M elements form a two-dimensional lattice between mica layers have been investigated. The content of the intercalated M element, x, was varied up to about 22 wt. %, which is about 81% with respect to the upper limit of x. The ac susceptibility measurements revealed the magnetic ordering around 10 K for the Fe- (x≥8.0 wt. %), Co- (x≥7.4 wt. %), and Ni-mica intercalation compounds, but did not for the Mn-mica. These magnetic orders are considered to be the two-dimensional ones, caused from the intralayer superexchange interaction between M2+ (and Fe3+) ions.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.342252
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  • 7
    Digitale Medien
    Digitale Medien
    Thickness dependence of superconductivity in rf-sputtered Y-Ba-Cu-O thin films (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 1732-1734 
    Details
    ISSN: 1077-3118
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Y-Ba-Cu-O thin films (100–730 nm) with small grains and a smooth surface have been fabricated by rf diode sputtering. The values of transition temperature Tc and critical current density Jc for the film (730 nm thickness) on SrTiO3 are 65 K and 1.2×105 A/cm2 at 4.2 K, respectively. The thickness dependence of Tc and Jc for the patterned films shows that Tc and Jc are almost constant for films with a thickness d≥200 nm.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.99715
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  • 8
    Digitale Medien
    Digitale Medien
    Macular Scabies With Annular Arrangement of Papules (1986)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of dermatology 25 (1986), S. 0 
    Details
    ISSN: 1365-4632
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-4362.1986.tb04712.x
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  • 9
    Digitale Medien
    Digitale Medien
    Exploration of a quantitative dansyl chloride technique for measurement of the rate of desquamation (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental dermatology 12 (1987), S. 0 
    Details
    ISSN: 1365-2230
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: A new fluorescence comparator has been used to measure dansyl chloride-induced fluorescence from the skin surface. By taking readings twice daily, it was possible to ideality a circadian rhythm in which there was relatively depressed desquamation at night, compared with during the day. The study also demonstrated that the rate of desquamution was considerably reduced from protected sites, compared with normal unprotected sites. Other experiments demonstrated the ability of the technique to determine the enhanced rate of desquamation from uninvolved areas of skin near lesions of psoriasis, and the keratolvtic effect of preparations containing salicylic acid. It is considered that the technique adds objectivity and quantitative ability to the dansyl chloride method for characterizing desquamation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2230.1987.tb01912.x
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  • 10
    Digitale Medien
    Digitale Medien
    Infrared spectra and dimer structure of reduced viologen compounds (1987)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 91 (1987), S. 3932-3934 
    Details
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/j100299a002
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