Magnetic enhancement in nanoscale CoRh particles

被引：153

作者：

Zitoun, D

Respaud, M

Fromen, MC

Casanove, MJ

Lecante, P

Amiens, C

Chaudret, B

机构：

[1] LNCMP, F-31432 Toulouse, France

[2] LCC, F-31077 Toulouse, France

[3] Inst Natl Sci Appl, LPMC, F-31077 Toulouse, France

[4] CNRS, CEMES, F-31077 Toulouse, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.89.037203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of size reduction on the magnetism of CoRh has been studied on a system of isolated nanometric spherical bimetallic ultrafine particles embedded in a polymer matrix. Pulsed fields up to 30 T were used in order to approach the magnetic saturation (M(S)). Particles with a mean diameter of 1.65 (+/-0.1) nm display a value of 2.38mu(B) per CoRh unit strongly enhanced compared to values calculated or measured on a bulk alloy. These results were interpreted as the first evidence of the cooperative role of both alloying and size reduction to the enhancement of M(S) in this system associating a 3d FM metal with a 4d metal.

引用

页码：372031 / 372034

页数：4

共 21 条

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