Room temperature ferromagnetic and ultraviolet optical properties of Co-doped ZnO nanocluster films

被引：51

作者：

Antony, J ^{[1
]}

Pendyala, S ^{[1
]}

Sharma, A ^{[1
]}

Chen, XB ^{[1
]}

Morrison, J ^{[1
]}

Bergman, L ^{[1
]}

Qiang, Y ^{[1
]}

机构：

[1] Univ Idaho, Dept Phys, Moscow, ID 83844 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 10期

关键词：

D O I：

10.1063/1.1846991

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We prepared 2 % and 5 % Co-doped ZnO nanocluster films at room temperature (RT) using doped ZnO nanoclusters as building blocks. The nanoclusters are produced by a third-generation magnetron-sputtering-agaregation source. Superconducting quantum interference device (SQUID), photoluminescence (PL), x-ray diffraction (XRD), x-ray photoelectron spectrometer (XPS), and atomic force microscopy (AFM) measurements were done on the samples. The average nanocrystallite size of the nanoclusters was similar to 7.5 nm. The 2 % Co-doped ZnO nanocluster films exhibit significant ferromagnetism and ultraviolet (UV) photoluminescence (PL) at RT. The coercivity (H-c) doubled in the 2 % Co-doped samples when compared to the 5 % Co-doped samples. A strong UV-PL of similar to 3.33 eV was observed for the 2 % Co-doped ZnO nanocluster film at RT. The 5 % Co-doped ZnO nanocluster film showed a ferromagnetic behavior at RT but no UV luminescence. (c) 2005 American Institute of Physics.

引用

页数：3

共 32 条

[1] Large magneto-optical effect in an oxide diluted magnetic semiconductor Zn1-xCoxO [J].