A Study of Dispersed-precipitates Microstructure and Giant Magneto-optical Properties for MnSbPt Films.
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Accession number;99A0938083
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| Title;A Study of Dispersed-precipitates Microstructure and Giant Magneto-optical Properties for MnSbPt Films. |
| Author;
SAITO SHIN
(Tohoku Univ.)
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Journal Title;Record of Electrical and Communication Engineering Conversazione, Tohoku University
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Journal Code:F0511A
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ISSN:0385-7719
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VOL.68;NO.1;PAGE.69-72(1999)
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| Figure&Table&Reference;FIG.7, REF.3 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;The mechanism of the enhancement of the MO Kerr rotation in the shortwavelength region for Mn50Sb44Pt6 films was investigated from the viewpoints of the dispersed-precipitates microstructure and of their components of the dielectric tensor. As results, it was found that, (1) the PtMnSb phase with fcc structure coherently precipitated at grain boundaries of the host solid solution of the hex. MnSb(Pt) phase at the annealing temperatures less than 30.DEG.C., (2) the PtMnSb phase recrystallized to the the size of about 1000.ANGS., with changing the crystal orientation from (110) to a high atomic density plane of (111) at the annealing temperatures more than 300.DEG.C., (3) the PtSb2 phases nucleated and grew to be dendrite as a result of the diffusion of Pt atoms from the PtMnSb phase after annealing over 400.DEG.C., (4) for the Mn50Sb44Pt6 film, the maximum of .THETA.K, where .EPSILON.xx' was relatively small, was originated from .EPSILON.xy', (5) the appearance and the shift of the .THETA.K maximum were caused by the .EPSILON.xy' maximum, and (6) in the sharing layers between the MnSb phase and the PtMnSb phase under the coherent precipitation process, only the magneto-optical transition (.EPSILON.xy' maximum) of the MnSb phase at 2.50eV was observed. (author abst.) |
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