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  • American Institute of Physics (AIP)  (6)
  • 1985-1989  (6)
  • 1970-1974
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Magnetic force microscopy: Some remarks from the micromagnetic point of view (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 1561-1564 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The present communication focuses on a critical micromagnetic discussion of the promising analytical possibilities with regard to ferromagnetic fine structures offered by the recent invention of magnetic force microscopy. As a result, some limiting constraints for the analysis of soft and hard ferromagnetic media are derived which have to be taken into account for an interpretation of the experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341836
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  • 2
    Electronic Resource
    Electronic Resource
    Néel-line motion along Bloch walls (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 4918-4920 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The motion of Néel lines along subdivided 180° Bloch walls has been investigated on iron whisker single crystals by indirect optical observation through the influence on Bitter patterns. The field-induced displacement of the lines is dominated by microscopic Barkhausen jumps, where the lines exhibit a striking flexibility along their longitudinal extent. Phenomena such as line fusion, line nucleation, and interactions with crystal defects have been investigated more closely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339001
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  • 3
    Electronic Resource
    Electronic Resource
    In situ observation of interactions between Bloch walls and local crystalline defects (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 167-171 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The influence of local crystalline defects upon the magnetization reversal process of single-crystalline iron whiskers has been investigated by direct observation of the domain configuration and by inductive magnetization measurements. As an essential result, the investigations bring to evidence that only weak interactions are obtained between the dislocations and 180° Bloch walls. On the other hand, a strong pinning efficiency to 90° Bloch walls is observed which is due to the stress field created by the perturbation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340484
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  • 4
    Electronic Resource
    Electronic Resource
    Periodicity and surface flux closure of multipolar 180° Bloch walls (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 62 (1987), S. 621-626 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The recent calculation of the specific energy associated with Néel singularities in cubic crystals now permits an estimation of the periodicity and self-magnetostatic energy of multipolar 180° Bloch walls. Additionally, it is shown that the slight zigzagging of these walls in the near-surface region of a crystal causes a considerable reduction of the effective free surface charges by an extensive flux closure internal to the crystal
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.339790
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  • 5
    Electronic Resource
    Electronic Resource
    Observation of subdivided 180° Bloch wall configurations on iron whiskers (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 4123-4128 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Subdivided 180° Bloch walls have been observed on iron whiskers using an improved colloid technique. Under the influence of a magnetic field applied vertical to the surface of a specimen the magnetization reversal of the complex wall is governed by Néel line motion. The field-induced conversion exhibits a characteristic "remanence'' and "coercivity'' of the wall. During a longitudinal magnetization cycle of a whisker the actual wall configuration has a substantial influence on the magnetization curve. The coercivity of the specimen is closely correlated to the initial mobility of the Néel lines. Discontinuities in the Néel line motion are responsible for small Barkhausen jumps, especially in the low-field region. The irregular segmentation of the complex wall in the remanent state appears to be an essential source of the remanent whisker magnetization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336670
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  • 6
    Electronic Resource
    Electronic Resource
    Improved magnetic fine-structure analysis by simultaneous observation of domains and walls (1987)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 51 (1987), S. 374-375 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An optical technique is presented which permits a simultaneous observation of domains and domain boundaries in transparent and opaque magnetic specimens. The Faraday or Kerr contrast combined with Bitter pattern agglomerations yields a maximum information transference for an investigation of magnetic fine structures. Some results obtained for a uniaxial ferrimagnetic film are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.98446
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