scholarly journals The Dilute Magnetic and Optical Properties of Mn-Doped ZnO Nanowires

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Xiying Ma ◽  
Caoxin Lou
Keyword(s):  
Optical Properties ◽  
Blue Emission ◽  
Deposition Process ◽  
Zno Nanowires ◽  
Storage Devices ◽  
Electromagnetic Devices ◽  
Liquid Source ◽  
Doped Zno ◽  
Ar Gas ◽  
Mn Doped

We present a study of the dilute magnetic and optical properties of Mn-doped ZnO nanowires (Nws) fabricated by means of a liquid phase evaporation deposition process. The samples were grown using a mixed Zn/Mn liquid source with a mol ratio of Mn 10% in a constant O2/Ar gas at 580°C. The nanowires show a strong UV emission at 405 nm and a blue emission at 433 nm in the photoluminescence spectrum. In addition, they present a strong reversible smooth ferromagnetic hysteresis loop at room temperature, and the corresponding saturation magnetization Msis up to 0.015 emu/g Oe, showing that the nanowires are of a ferromagnetism semiconductor (DMS). With the strong magnetic and photoluminescence properties, ZnO : Mn Nws will be used in fields of making electromagnetic devices and magneto-optical storage devices.

A comparative study of magnetic and optical properties of Mn-, Gd-, and Nd-doped ZnO nanowires

2017 ◽  
Vol 31 (01) ◽  
pp. 1650241 ◽  
Author(s):  
Arup Chakraborty ◽  
Chol-Sam Jong ◽  
Nirmal Ganguli ◽  
I. Dasgupta
Keyword(s):  
Optical Properties ◽  
Rare Earth ◽  
Transition Metal ◽  
Comparative Study ◽  
Density Functional ◽  
Zno Nanowires ◽  
Ultraviolet Region ◽  
Doped Zno ◽  
Metal Doped ◽  
Mn Doped

We present a comparative study of magnetism and optical properties for [Formula: see text] transition metal (TM) (Mn)-doped and [Formula: see text] rare-earth metals (Gd and Nd)-doped ultrathin ZnO nanowires using ab-initio density functional calculation. Our calculations indicate Nd-doped ZnO nanowires with oxygen vacancies are more favorable for ferromagnetism. Calculations including spin–orbit coupling for Nd-doped ZnO nanowires reveal not only giant anisotropy where magnetism parallel to the nanowire axis is found to be favorable but also stabilized ferromagnetism. We have calculated the absorption spectra for Mn-, Gd- and Nd-doped ZnO nanowires and found that the absorption intensity increases upon increasing the concentration of dopant ions. While Mn-doped ZnO nanowire allows absorption of light in the large energy window ranging from visible to ultraviolet, Gd- and Nd-doped systems absorb light primarily in the ultraviolet region. Our result indicates transition-metal-doped as well as rare-earth-doped ZnO nanowires may be ideal for spintronics and optoelectronic devices.

Efficient multispectral photodetection using Mn doped ZnO nanowires

2012 ◽  
Vol 22 (19) ◽  
pp. 9678 ◽  
Author(s):  
Rajiv Ramanujam Prabhakar ◽  
Nripan Mathews ◽  
K B Jinesh ◽  
K R G Karthik ◽  
Stevin Snellius Pramana ◽  
...  
Keyword(s):  
Zno Nanowires ◽  
Doped Zno ◽  
Mn Doped

Synthesis and optical properties of Pb-doped ZnO nanowires

2005 ◽  
Vol 202 (3) ◽  
pp. 339-339
Author(s):  
Shao-Min Zhou ◽  
Xiao-Hong Zhang ◽  
Xiang-Min Meng ◽  
Shi-Kang Wu ◽  
Shuit-Tong Lee
Keyword(s):  
Optical Properties ◽  
Zno Nanowires ◽  
Doped Zno
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