Irradiation-induced magnetism in carbon nanostructures

被引：224

作者：

Talapatra, S ^{[1
]}

Ganesan, PG

Kim, T

Vajtai, R

Huang, M

Shima, M

Ramanath, G

Srivastava, D

Deevi, SC

Ajayan, PM

机构：

[1] Rensselaer Polytech Inst, Dept MS & E, Troy, NY 12180 USA

[2] Rensselaer Polytech Inst, Rensselaer Nanotechnol Ctr, Troy, NY 12180 USA

[3] SUNY Albany, Dept Phys, Albany, NY 12203 USA

[4] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA

[5] Philip Morris Inc, RD & E Ctr, Richmond, VA 23234 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.95.097201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nitrogen (N-15) and carbon (C-12) ion implantations with implant energy of 100 keV for different doses were performed on nanosized diamond (ND) particles. Magnetic measurements on the doped ND show ferromagnetic hysteresis behavior at room temperature. The saturation magnetization (M-s) in the case of N-15 implanted samples was found to be higher compared to the C-12 implanted samples for dose sizes greater than 10(14) cm(-2). The role of structural modification or defects along with the carbon-nitrogen (C-N) bonding states for the observed enhanced ferromagnetic ordering in N-15 doped samples is explained on the basis of x-ray photoelectron spectroscopy measurements.

引用

页数：4

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