MAGNETIC RESPONSE OF ULTRATHIN FE ON MGO - A POLARIZED NEUTRON REFLECTOMETRY STUDY

被引：12

作者：

ADENWALLA, S ^{[1
]}

PARK, YS ^{[1
]}

FELCHER, GP ^{[1
]}

TEITELMAN, M ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,NIZHNII NOVGOROD,RUSSIA

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 76卷 / 10期

关键词：

D O I：

10.1063/1.358534

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetization of ultrathin bcc Fe films (two and three monolayers) on MgO was measured and compared with the behavior predicted for a two-dimensional ferromagnet. The experiment indicated that no hysteresis was present in the magnetization. Instead, the magnetization at low temperature was affected by a marked field cooling effect. These observations lead to the conclusion that films of Fe on MgO of such thickness exhibit superparamagnetic behavior as if they were not entirely continuous. In contrast, films thicker than five monolayers exhibit a magnetic response close to that of bulk iron.

引用

页码：6443 / 6445

页数：3

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