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Wagner, R.; Brenner, S. S. |
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Morphology and chemistry of internally nitrided Fe-3 at. % Mo |
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Journal Article |
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1978 |
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Acta Metall. |
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26 |
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metallurgical applications Fe-Mo nitrides; Atom Probe Field Ion Microscopy |
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7525 |
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Warren, S. E. |
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Studies in field ionization kinetics |
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Journal Article |
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1978 |
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Univ. Microfilms Int., Order No. 7911136 (1978) |
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7529 |
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Audiffren, M.; Traimon, P.; Bardon, J.; Drechsler, M. |
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A study of atom zigzag chains on the surface of tungsten |
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Journal Article |
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1978 |
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Surface Science |
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Surf. Sci. |
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75 |
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4 |
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751-760 |
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surface structure; Field Ion Microscopy |
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Nishigaki and Nakamura have observed zigzag chains on the central (011) face of tungsten after field evaporation at T #62; 140 K. In this paper, a study of the formation, disappearance and structure of such chains is described. Tungsten tips of small radii down to 60 Ã… were used. Chains of 3 to 9 spots, that are clearly visible, are found even at 90 K. Four different structure models of the zigzag chains are discussed, including the multibranch model proposed by the Japanese authors. The interpretation of our experimental results shows fairly clearly that the real zigzag chain structure is a special non-dense structure. It must be formed by a local displacement of the tungsten adatoms in the field. Without the field, a zigzag chain is transformed into a two-dimensional cluster of the nearest neighbour atom by a small increase in temperature. If the field is reintroduced, the cluster can revert to the initial zigzag structure. The zigzag structure is interpreted as being caused by forces of repulsion between the atom dipoles. |
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8848 |
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Nazarenko, V. A.; Pokhodenko, V. D. |
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The formation of negative ions in high electric fields |
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Journal Article |
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1979 |
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International Journal of Mass Spectrometry and Ion Physics |
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Int. J. Mass Spectrom. Ion Phys. |
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31, |
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7650 |
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Brenner, S. S.; Miller, M. K. |
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Microchemical analysis of steels and other ferrous alloys with the atom-probe |
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Book Chapter |
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1980 |
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Proc. 27th IFES, Tokyo |
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APFIM steels ferrous alloys |
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Univ. of Tokyo |
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Tokyo |
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Yashiro, Y.; Igata, N. |
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7730 |
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Brenner, S. S.; Myers, S. M. |
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Trapping of antimony by TiC in ion-implanted iron |
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Book Chapter |
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1980 |
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Proc. 27th IFES, Tokyo |
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ion implanted Fe TiC Sb |
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Univ. of Tokyo |
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Tokyo |
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Yashiro, Y.; Igata, N. |
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7731 |
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Brenner, S. S.; Walck, S. D. |
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Segregation of antimony and phosphorus to nitride interfaces in iron-molybdenum alloy |
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Book Chapter |
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1980 |
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Proc. 27th IFES, Tokyo |
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Fe-Mo nitride Sb P interfaces |
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Univ. of Tokyo |
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Tokyo |
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Yashiro, Y.; Igata, N. |
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7732 |
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Rendulic, K. D.; Leisch, M. |
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The gas supply function in field ion microscopy |
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Journal Article |
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1980 |
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Surface Science |
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Surf. Sci. |
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95 |
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7873 |
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Rendulic, K. D.; Leisch, M. |
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Field desorption of common gases from iridium and tungsten |
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Journal Article |
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1980 |
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Surface Science |
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Surf. Sci. |
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93 |
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7874 |
| Permanent link to this record |
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Current, Michael I.; Seidman, David N. |
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Sputtering of tungsten: a direct view of a near surface depleted zone created by a single 30 keV63 Cu+ projectile |
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Journal Article |
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1980 |
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Nuclear Instruments and Methods |
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170 |
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1-3 |
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377-381 |
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The vacancy structure of near-surface depleted zone (DZ), created by a single 30 keV 63Cu+ ion in a tungsten field-ion microscope (FIM) specimen, was determined with atomic resolution. Both the irradiation and pulse field-evaporation experiments were performed in situ at less, approximate11 K, so that the observed vacancy structure was unaltered by the long-range migration of self-interstitial atoms. The following basic physical quantities were measured: (1) the number of vacancies; (2) the dimensions; (3) the vacancy concentration; (4) the distribution of first-nearest-neighbor vacancy clusters; and (5) the radial-distribution function for the vacancies out to ninth-nearest neighbor. The values of these quantitieswere shown to be similar for both the near-surface DZ and DZs created in the bulk of the same specimen by 30 keV 63Cu+ projectiles. |
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8862 |
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