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.
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收藏
页码：372031 / 372034
页数：4
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