Ferromagnetism in fcc twinned 2.4 nm size Pd nanoparticles -: art. no. 237203

被引：171

作者：

Sampedro, B

Crespo, P

Hernando, A

Litrán, R

López, JCS

Cartes, CL

Fernandez, A

Ramírez, J

Calbet, JG

Vallet, M

机构：

[1] CSIC, Inst Magnetismo Aplicado Salvador Velayos, UCM, RENFE, Madrid 28230, Spain

[2] UCM, Dept Fis Mat, Madrid 28040, Spain

[3] Ctr Mixto CSIC UNIV, ICMSE, Seville 41092, Spain

[4] UCM, Fac Quim, Dept Quim Inorgan, Madrid 28040, Spain

[5] UCM, Fac Farm, Dept Quim Inorgan, Madrid 28040, Spain

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.91.237203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The onset of ferromagnetism has been experimentally observed in small Pd particles of average diameter 2.4 nm. High-resolution studies reveal that a high percentage of the fcc particle exhibits single and multiple twinning boundaries. The spontaneous magnetization close to 0.02 emu/g seems to indicate that only a small fraction of atoms holds a permanent magnetic moment and contributes to ferromagnetism. The possible origin of ferromagnetism is briefly discussed according to different models recently reported.

引用

页数：4

共 15 条

[1] MAGNETISM OF 4D AND 5D TRANSITION-METAL ADLAYERS ON AG(001) - DEPENDENCE ON THE ADLAYER THICKNESS [J].