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Digitale Medien

A new concept of magnetic thin-film heads with superconductors (1988)

Chen, Y. X. ; Yan, D. R. ; Xie, Y. ; [weitere]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 64 (1988), S. 6026-6028

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ISSN: 1089-7550

Quelle: AIP Digital Archive

Thema: Physik

Notizen: A new concept of the thin-film heads for magnetic recording introduced in this paper is to use the superconductive film as a perfect diamagnet to be the gap medium between the two magnetic poles of a thin-film ring head for the longitudinal magnetic recording. By using the finite-element method, the magnetic field and its distribution for the new designed ring head with a single-layer superconductive film or multilayer structure as the medium between the magnetic poles is calculated. The results show that the diamagnetic film in the gap not only increases the amplitude of the magnetic field in front of the magnetic poles, but also makes the distribution of the magnetic field much sharper, and the amplitude of the field is less influenced by the throat height of the pole tip as well.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.342139

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Digitale Medien

A covariant open bosonic string field theory including the endpoint and middlepoint interaction (1988)

Liu, B. -G. ; Chen, Y. -X.

Springer

The European physical journal 39 (1988), S. 547-551

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ISSN: 1434-6052

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Extending the usual endpoint and midpoint interactions, we introduce numerous kinds of interactions, labelled by a parameter λ and obtain a non-commutative and associative string field algebra by adding up all interactions. With this algebra we develop a covariant open bosonic string field theory, which reduces to Witten's open bosonic string field theory under a special string length choice.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01555985

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Digitale Medien

High-resolution rlectron microscopic investigation of supported platinum particles reduced at high temperatures (1988)

Wang, L. ; Qiao, G. W. ; Ye, H. Q. ; [weitere]

New York, NY : Wiley-Blackwell

Journal of Electron Microscopy Technique 10 (1988), S. 7-14

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ISSN: 0741-0581

Schlagwort(e): HREM ; Supported particle ; SMSI ; Life and Medical Sciences ; Cell & Developmental Biology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Allgemeine Naturwissenschaft

Notizen: High-resolution electron microscopy has been used to characterize the platinum particles supported on TiO2 or ZnO. After reduction at elevated temperatures, the metallic particles display a regular, faceted shape, and several superstructures, Pt3 Ti(C), Pt3 Ti(H), PtTi, and PtZn, have been found. These results, which may involve strong metal-support interaction, have been confirmed by optical diffraction and image simulation.

Zusätzliches Material: 7 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jemt.1060100103

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