Anisotropy of Co nanoparticles induced by swift heavy ions -: art. no. 220101

被引：144

作者：

D'Orléans, C

Stoquert, JP

Estournès, C

Cerruti, C

Grob, JJ

Guille, JL

Haas, F

Muller, D

Richard-Plouet, M

机构：

[1] Lab PHASE, CNRS, UPR 292, F-67037 Strasbourg 2, France

[2] IPCMS, GMI, CNRS, UMR 75040, F-67037 Strasbourg, France

[3] IPCMS, GMI, ULP, F-67037 Strasbourg 2, France

[4] IReS, CNRS, UMR 7500, IN2P3, F-67037 Strasbourg 2, France

[5] IReS, ULP, F-67037 Strasbourg 2, France

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.67.220101

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spherical metallic nanoparticles have been formed in SiO2 layers by 160-keV implantation of Co ions at a fluence of 10(17) ions cm(-2). The implanted samples were next irradiated with 200-MeV I-127 at fluences ranging from 10(11) to 10(14) ions cm(-2) at room temperature. Modifications of nanoparticle size and shape were observed by transmission-electron microscopy and have been characterized by magnetic measurements at 295 and 5 K. For I-127 fluences below 10(12) ions cm(-2), the nanoparticles grow in size but remain spherical. For higher fluences an anisotropic growth occurs, with elongation and the preferential easy axis seen along the incident-beam direction. The nanoparticle's growth and deformations are attributed to thermal spike effects.

引用

页数：4

共 14 条

[1] Nanometric size effects on irradiation of tin oxide powder [J].