Indium-doped ZnO nanowires: Optical properties and room-temperature ferromagnetism

2010 ◽  
Vol 108 (4) ◽  
pp. 043516 ◽  
Author(s):  
K. W. Liu ◽  
M. Sakurai ◽  
M. Aono
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Nanowires ◽  
Doped Zno

Trapping of Ce electrons in band gap and room temperature ferromagnetism of Ce4+ doped ZnO nanowires

2009 ◽  
Vol 106 (8) ◽  
pp. 083515 ◽  
Author(s):  
Javed Iqbal ◽  
Xiaofang Liu ◽  
Huichao Zhu ◽  
Chongchao Pan ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Band Gap ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Nanowires ◽  
Doped Zno

Ferromagnetic and Optical Properties of Partially Cu-Doped ZnO Films

2009 ◽  
Vol 64 (11) ◽  
pp. 765-768 ◽  
Author(s):  
Fan-Yong Ran ◽  
Masaki Tanemura ◽  
Yasuhiko Hayashi ◽  
Norihiro Ide ◽  
Masao Imaoka ◽  
...  
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Ion Irradiation ◽  
Ion Beam ◽  
Room Temperature Ferromagnetism ◽  
Intrinsic Property ◽  
Zno Films ◽  
Cu Doping ◽  
Partial Area ◽  
Doped Zno

Wurtzite structure ZnO films (3×3 mm2) with a partial-area Cu doping were successfully prepared using a micro-area Ar+-ion beam (~ 380 μm in diameter) and a simultaneous Cu supply at room temperature. A Cu2O phase was formed in the ZnO films by Cu doping. The partially Cu-doped ZnO films exhibited room-temperature ferromagnetism (RTFM) with a saturation magnetization of 1.6×10−5 emu and a coercive field of 40 Oe. Since Zn, Cu, and their compounds are not ferromagnetic, the observed RTFMis attributed to the intrinsic property of Cu-doped ZnO films. As confirmed by the low temperature photoluminescence (PL) spectra, no serious optical damage was recognized in the region without Ar+-ion irradiation. Thus, it was believed that the micro-area Ar+-ion irradiation with a simultaneous Cu supply was promising to integrate the magnetic and optical properties of ZnO-based materials.

Comparative Study of Room-Temperature Ferromagnetism in Cu-Doped ZnO Nanowires Enhanced by Structural Inhomogeneity

2008 ◽  
Vol 20 (18) ◽  
pp. 3521-3527 ◽  
Author(s):  
Guo Zhong Xing ◽  
Jia Bao Yi ◽  
Jun Guang Tao ◽  
Tao Liu ◽  
Lai Mun Wong ◽  
...  
Keyword(s):  
Comparative Study ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Nanowires ◽  
Structural Inhomogeneity ◽  
Doped Zno

scholarly journals Room-temperature optical properties of Al-doped ZnO nanowires array

2007 ◽  
Vol 56 (9) ◽  
pp. 5176
Author(s):  
Tang Bin ◽  
Deng Hong ◽  
Shui Zheng-Wei ◽  
Wei Min ◽  
Chen Jin-Ju ◽  
...  
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Zno Nanowires ◽  
Doped Zno ◽  
Nanowires Array

Evidence of Room Temperature Ferromagnetism in Vertically Aligned Bi-Co co-doped ZnO Nanowires

2021 ◽  
Author(s):  
Jamal Kazmi ◽  
Poh Choon Ooi ◽  
Syed Raza Ali Raza ◽  
Goh Boon Tong ◽  
Siti Shafura A Karim ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Nanowires ◽  
Vertically Aligned ◽  
Doped Zno ◽  
Co Doped

Co-DOPED ZnO NANOWIRES GROWN BY VAPOR–LIQUID–SOLID METHOD: STRUCTURAL, OPTICAL AND MAGNETIC STUDIES

NANO ◽  
2012 ◽  
Vol 07 (04) ◽  
pp. 1250028 ◽  
Author(s):  
BAPPADITYA PAL ◽  
SOUMEN DHARA ◽  
P. K. GIRI
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Visible Region ◽  
Magnetic Behavior ◽  
Hexagonal Structure ◽  
Zno Nanowires ◽  
Magnetic Studies ◽  
Microscopy Imaging ◽  
Doped Zno ◽  
Co Doped

We report on the growth of Co -doped ZnO nanowires (NWs) on Si substrate using a self-catalytic vapor deposition method from a Co -doped ZnO nanopowder source and study its structural, optical and magnetic properties for the as-grown and rapid thermal annealed samples. Co (5%)-doped ZnO ( ZnCoO ) nanoparticles (NPs) are used as source material for the growth process. Electron microscopy imaging clearly reveals the formation of long ZnO NWs with uniform diameter. X-ray diffraction analysis confirms the single crystalline hexagonal structure of Co -doped ZnO NWs without impurities of metallic cobalt or other phases. Micro-Raman studies of doped samples show doping/disorder induced additional modes as compared to the undoped ZnO . Room temperature photoluminescence spectra of the doped ZnO NWs show strong emission band at ~380 nm and no significant emission was observed in the visible region indicating low defect content in the NWs. The field dependent magnetization (M–H curve) measured at room temperature exhibits paramagnetic nature for the NWs with the magnetic moment in the range 2–3.7 milli-emu/cm2 for the applied field of 2 Tesla, while the source ZnCoO NPs exhibit room temperature ferromagnetism with saturation magnetization ~6 emu/g. Possible mechanism of alteration in magnetic behavior in doped NWs are discussed based on the growth conditions and role of defects.

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