Morphology and Curie temperature changes upon annealing of Co/W(110)

被引：5

作者：

Bauer, A ^{[1
]}

Muhlig, A ^{[1
]}

Gunther, T ^{[1
]}

Farle, M ^{[1
]}

Baberschke, K ^{[1
]}

Kaindl, G ^{[1
]}

机构：

[1] Free Univ Berlin, Inst Phys Expt, D-14195 Berlin, Germany

来源：

MAGNETIC ULTRATHIN FILMS, MULTILAYERS AND SURFACES - 1997 | 1997年 / 475卷

关键词：

D O I：

10.1557/PROC-475-27

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Annealing of Co/W(110) ultrathin films causes rather strong changes of film morphology and magnetic properties, which has been studied by scanning tunneling microscopy (STM) and alternating-current magneto-optical Kerr effect (ac-MOKE). Annealing above 500 K of room-temperature grown 2 monolayers (ML) thick Co/W(110) films leads to the formation of islands and a decrease of the Curie temperature Tc. At 4 ML, on the other hand, a network of interconnected islands is formed upon annealing, resulting in an enhanced T-C. While the increase of T-C at 4 ML is explained by an increase of the local film thickness, the anomalous T-C behavior at 2 ML is assigned to the occurrence of superparamagnetism.

引用

页码：27 / 32

页数：6