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MAGNETO-OPTICAL PROPERTIES OF Pt1-xMnx/Co MULTILAYERS

WANG SONG-YOU CHEN LIANG-YAO ZHOU XUN LIU HONG LIANG BING-QING CHEN XI WANG HAI TANG YUN-JUN WANG YIN-JUN

MAGNETO-OPTICAL PROPERTIES OF Pt1-xMnx/Co MULTILAYERS

WANG SONG-YOU, CHEN LIANG-YAO, ZHOU XUN, LIU HONG, LIANG BING-QING, CHEN XI, WANG HAI, TANG YUN-JUN, WANG YIN-JUN
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  • Received Date:  17 April 2000
  • Accepted Date:  22 May 2000
  • Published Online:  20 October 2000

MAGNETO-OPTICAL PROPERTIES OF Pt1-xMnx/Co MULTILAYERS

  • 1. (1)复旦大学物理系,上海 200433; (2)贵州师范大学物理系,贵阳 550001; (3)首都师范大学物理系,北京 100037; (4)中国科学院物理研究所磁学国家重点实验室和凝聚态物理中心,北京 100080

Abstract: The polar Kerr rotation, Kerr ellipticity and optical constant n and k change regularly with the increase of Mn doping in Pt layer of Pt/Co multilayers. Through calculation and analyses, in heavy Mn doping the change of the Kerr rotation is due to the off-diagonal elements of dielectric tensor. However, in light Mn dop ing the change of Kerr rotation results from the change in the magneto-optical a nd optical constants. The enhanced magneto-optical Kerr rotation is due to the e nhancement of Pt spin-orbit coupling. The variation of Pt spin-polarization resu lts in the change of diagonal and off-diagonal elements of dielectric tensor.

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