EVIDENCE FOR MARTENSITIC FCC-BCC TRANSITION OF THIN FE FILMS ON CU(100)

被引：88
|
作者：
KALKI, K
CHAMBLISS, DD
JOHNSON, KE
WILSON, RJ
CHIANG, S
机构：
[1] IBM Research Division, Almaden Research Center, San Jose, CA 95120
来源：
PHYSICAL REVIEW B | 1993年 / 48卷 / 24期
关键词：
D O I：
10.1103/PhysRevB.48.18344
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the martensitic fcc-bcc phase transformation for Fe films grown at room temperature on Cu(100) in a thickness range from 10 to 20 monolayers. bcc(110) grains are highly elongated along (011)(fcc) parallel to [1 $($) over bar$$ 11](bcc) and exhibit characteristic island growth with steps along [001](bcc). The martensitic (i.e., sudden, collective, nondiffusive) transformation in the bulk of the film is demonstrated by STM topography, including the behavior of steps at grain boundaries and the presence of tilted surfaces arising from fcc-bcc interfaces.
引用
收藏
页码：18344 / 18347
页数：4
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