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  • 1
    Electronic Resource
    Electronic Resource
    Magneto-crystalline anisotropy of Fe-Ni Invar alloys
    Amsterdam : Elsevier
    Physica B+C 86-88 (1977), S. 299-300 
    Details
    ISSN: 0378-4363
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0378-4363(77)90320-5
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  • 2
    Electronic Resource
    Electronic Resource
    Ferromagnetic resonance studies of Fe16N2 films with a giant magnetic moment : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 6060-6062 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The g factor and 4π Ms for epitaxially grown Fe16N2(001)/In0.2Ga0.8As(001) films have been investigated by ferromagnetic resonance along with Fe films for comparison. Angular dependence of the resonance fields in the film plane of Fe16N2 films had four-fold symmetry, which was attributed to the in-plane anisotropy. The g factor for Fe16N2 films was about 2.0, which means that the magnetic moment originates mainly from spin. Thus, nothing unusual is seen about the g factor. The g factor for Fe films was about 2.1, which is very similar to the value reported previously. 4πMs values for Fe16N2 and Fe films were 2.8×104 and 2.1×104 G, respectively, which agree well with the previous data obtained by a vibrating sample magnetometer. This confirmed that Fe16N2 has a giant magnetic moment. Torque magnetometer measurements showed that Fe16N2 films have a larger perpendicular anisotropy of 7.8×106 erg/cm3, which can originate from its bct structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353469
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  • 3
    Electronic Resource
    Electronic Resource
    Design and fabrication of thin-film heads based on a dry process (invited) (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 4157-4162 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High performance thin-film heads for disk drive systems have been developed based on a dry process. Heads were computer simulated and optimal design was carried out. Relationships among Ni-Fe composition, domain structure and wiggle of the read-write waveform were obtained. Based on these results, optimum Ni-Fe composition range was determined. A planarization procedure for an inbedding insulator of the conductor coil was developed. Also narrow track patterning and gap depth controlling procedures were developed. Using these procedures, a two-layered seventeen-turn thin-film head for a large capacity disk drive system (23 Mb/in.2) has been developed. The head exhibited excellent read-write characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338514
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Giant magnetic moment and other magnetic properties of epitaxially grown Fe16N2 single-crystal films (invited) : The 5th Joint MMM−Intermag Conference (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 5977-5982 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Single-crystal Fe16N2 films have been grown epitaxially on Fe(001)/InGaAs(001) and InGaAs(001) substrates by molecular beam epitaxy (MBE). Saturation flux density Bs of Fe16N2 films has been demonstrated to be 2.8–3.0 T at room temperature, which is very close to the value obtained by Kim and Takahashi using polycrystalline evaporated Fe–N films. Temperature dependence of Bs has been measured. Bs changed with temperature reversibly up to 400 °C, while beyond 400 °C, Bs decreased irreversibly. X-ray diffraction showed that Fe16N2 crystal is stable up to 400 °C, while beyond 400 °C, Fe16N2 dissolves into Fe and Fe4N, and also some chemical reactions between Fe16N2 and the substrate occurs. This caused the temperature dependence of Bs mentioned above. From the temperature dependence of Bs up to 400 °C, the Curie temperature of Fe16N2 is estimated to be around 540 °C by using the Langevin function. The above mentioned Bs of 2.9 T at room temperature and 3.2 T at −268 °C corresponded to an average magnetic moment of 3.2μB per Fe atom and 3.5μB, respectively. These values of the magnetic moment of Fe atoms are literally giant, far beyond the Slater–Pauling curves. The origin of the giant magnetic moment has been discussed based on the calculation carried out by Sakuma. However, there was a significant disagreement between experimental values and calculated ones, so the origin remained to be clarified. Also, magneto-crystalline anisotropy of Fe16N2 films has been investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350067
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  • 5
    Electronic Resource
    Electronic Resource
    The relaxation process of the uniaxial anisotropy of Co-Zr amorphous films (abstract) (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 5142-5142 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin film heads made of Co-based amorphous films with high saturation magnetization were reported to have superior capabilities for high-density magnetic recording.1 However, it was found that the uniaxial anisotropy is changed during head fabrication processes. In this study, we investigate the relaxation process of the uniaxial anisotropy of sputtered Co-Zr amorphous films. 1-μm-thick Co-Zr films of 1.4 T were prepared by rf sputtering. Uniaxial anisotropy was induced by the magnetic field of 50 Oe during deposition. After deposition, annealing was performed in the dc field of 500 Oe applied parallel to the easy axis of the films for stabilizing the uniaxial anisotropy (preannealing). The preannealing temperature was changed from 200 to 350 °C. The films were annealed again in a field along the hard axis to reduce the uniaxial anisotropy. Decrease of the anisotropy field was discussed based on Richter-type relaxation,2 where τ2 is the maximum and τ1 is the minimum relaxation time, respectively. Without preannealing, the bandwidth ln(τ2/τ1) is broad at higher annealing temperatures. With preannealing, the bandwidth becomes narrower and is almost constant for various preannealing temperatures. These results show that the relaxation processes with shorter relaxation times are all suppressed by preannealing. The average activation energy is 2.0 eV without preannealing. It increases with preannealing temperatures and reaches 2.9 eV at 350 °C. From these results, it is clear that preannealing at higher temperatures is more effective in stabilizing the uniaxial anisotropy in the CoZr amorphous films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344642
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  • 6
    Electronic Resource
    Electronic Resource
    Properties of a-Si:H based interface transient layers measured by in-situ ellipsometry
    Amsterdam : Elsevier
    Applied Surface Science 41-42 (1989), S. 591-597 
    Details
    ISSN: 0169-4332
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0169-4332(89)90128-1
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of intracellular 2,4-D concentration on plantlet regeneration of rice (Oryza sauva L.) callus (1994)
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 364-366 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Intracellular 2,4-dichlorophenoxyacetic acid (2,4-D) concentration profiles in rice (Oryza sativa L.) callus were measured for various subculture periods. 2,4-D was taken up into the callus by uphill transportation from the medium. The intracellular 2,4-D taken up was metabolized gradually during cultivation. The intracellular 2,4-D concentration markedly affected the redifferentiation process after subculture in such a way that the higher its concentration was, the more strongly the redifferentiation process was suppressed, and the lesser was the browning of the callus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00902743
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of intracellular 2,4-D concentration on plantlet regeneration of rice (Oryza sativa L.) callus (1994)
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 364-366 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Intracellular 2,4-dichlorophenoxyacetic acid (2,4-D) concentration profiles in rice (Oryza sativa L.) callus were measured for various subculture periods. 2,4-D was taken up into the callus by uphill transportation from the medium. The intracellular 2,4-D taken up was metabolized gradually during cultivation. The intracellular 2,4-D concentration markedly affected the redifferentiation process after subculture in such a way that the higher its concentration was, the more strongly the redifferentiation process was suppressed, and the lesser was the browning of the callus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00902743
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    Paper (German National Licenses)
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