SITE SELECTIVITY IN FE DOPED BETA-PHASE NIAL

被引：32

作者：

CHARTIER, P

BALASUBRAMANIAN, M

BREWE, D

MANZUR, T

PEASE, D

LAW, C

RUSSELL, S

KIMBALL, C

机构：

[1] UNIV CONNECTICUT,DEPT PHYS,STORRS,CT 06269

[2] UNITED TECHNOL CORP,PRATT & WHITNEY,E HARTFORD,CT 06128

[3] NO ILLINOIS UNIV,DEPT PHYS,DE KALB,IL 60115

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 75卷 / 08期

关键词：

D O I：

10.1063/1.356063

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated site selectivity in iron doped beta phase ternary alloys of the composition NixFeyAl(100-x-y), where the Ni concentration is within a few at. % of stoichiometry. Experimental techniques used include extended x-ray absorption edge fine structure and Mossbauer measurements. The transition metal atoms in excess of 50 at. %, which occupy sites with transition metal nearest neighbors, are not chosen randomlY among Ni and Fe, but are exclusively Fe, to within the accuracy of the measurements. This result requires a re-analysis of previous magnetic susceptibility measurements on this system, which as re-analyzed here imply more reasonable moment values for the Fe dopants. Our findings regarding Fe site selectivity are of significance in regards to recent studies showing a ductilization effect of Fe dopants microalloyed into Ni50Al50.

引用

页码：3842 / 3846

页数：5

共 12 条

[1] SILICON PHOTODIODE DETECTOR FOR A GLANCING-EMERGENCE-ANGLE EXAFS TECHNIQUE [J].