MAGNETIC-PROPERTIES OF ULTRATHIN CO/CU(001) FILMS DURING GROWTH

被引：16

作者：

SCHUMANN, FO

BLAND, JAC

机构：

[1] Cavendish Laboratory, Cambridge CB3 0HE, Madingley Road

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 73卷 / 10期

关键词：

D O I：

10.1063/1.353530

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the evolution of the in-plane magnetic hysteresis behavior of Co/Cu(001) films (in the monolayer range) by means of the transverse magneto-optical Kerr effect. Shortly after the onset of long-range order, the deposition was stopped and the almost square hysteresis loop which resulted revealed a small coercive field (H(c)=0.9 G) indicating a Curie temperature T(c) close to room temperature. Further Co deposition in small increments showed a dramatic increase of H(c). An increase of 9% in the thickness resulted in a variation of H(c) in the range 0.9 G < H(c) < 44.6 G to which a power law of the form (d/d(c)-1)alpha with alpha=0.58+/-0.07 could be attributed. This empirical fit suggests that the dramatic increase of the coercivity is thermodynamic in origin and related to the thickness dependence of the magnetization M.

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页码：5945 / 5947

页数：3

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