Effect of Ni-doping concentration on structural, optical and magnetic properties of CdSe nanorods

被引：36

作者：

Singh, Jaspal ^{[1
]}

Kumar, Sanjeev ^{[2
]}

Verma, N. K. ^{[1
]}

机构：

[1] Thapar Univ, Sch Phys & Mat Sci, Nano Res Lab, Patiala 147004, Punjab, India

[2] PEC Univ Technol, Dept Appl Sci, Chandigarh 160012, India

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2014年 / 26卷

关键词：

Nanorods; Ferromagnetism; Doping; DMS; FERROMAGNETISM; CO; NANOPARTICLES; MODES; ZNO;

D O I：

10.1016/j.mssp.2014.03.032

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Cd1-xNixSe (x=0.00, 0.05, 0.10 and 0.15) nanorods have been synthesized using solvothermal route. X-ray diffraction (XRD) studies show that the nanorods possess wurtzite phase having hexagonal structure. Transmission electron microscopy (TEM) reveals the formation of nanorods having lengths 150-200 nm and diameters 10-15 nm. This has been further confirmed by high-resolution transmission electron microscopy (HRTEM) wherein lattice fringes corresponding to CdSe have been well observed. Reflectance measurements illustrate the red-shift in band gap with increase of Ni-doping concentration. Raman spectra display the shifting of longitudinal optical (LO) phonon modes, and modes activation due to doping in CdSe nanorods. Magnetic hysteresis (M-H) loops at room temperature reveal the ferromagnetism in nanorods. The saturation magnetization values have been observed to increase upto 10% due to carrier mediated exchange interactions, whereas a decrease has been observed for 15% Ni-doping concentration due to super-exchange interactions. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：1 / 6

页数：6

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