Ni,Pd和Pt的表面应力  

STRESS ON THE Ni,Pd AND Pt SURFACES

作　　者：范希庆[1] 万钧[1] 申三国[1] 

机构地区：[1]郑州大学物理工程学院

出　　处：《物理学报》1997年第10期1978-1983,共6页Acta Physica Sinica

基　　金：河南省自然科学基金

摘　　要：半经验的修正嵌入原子方法用于Ｎｉ，Ｐｄ和Ｐｔ的低指数面的表面应力计算，得到了与第一原理计算相符合的结果．给出了（１１０）表面［１１０］方向的应力是［００１］方向应力的两倍左右；阐明了应力各向异性是所有ｆｃ金属（１１０）面的一般特性．预言了Ｐｄ和Ｐｔ（１００）的表面应力的大小．The semiempirical modified embedded atom method has been applied to calculate the surface stress on the low index surfaces of fcc metals Ni,Pd and Pt,and the results are in agreement with that of the first principle calculation.The surface stress on fcc(110) surface along the 110 direction is about twice as large as in the 001 direction;and this indicates that the anisotropy of the surface stress is a characteristic of (110) surface of fcc metals.In addition,the magnitudes of the surface stresses on Pd and Pt(100) surfaces have been predicted.

关 键 词：修正嵌入原子法 表面应力 镍 铅 铂 

分 类 号：O369[理学—流体力学]