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

Room Temperature Ferromagnetism and Band Gap Engineering in Mg Doped ZnO RF/DC Sputtered Films

2013 ◽  
Vol 1577 ◽  
Author(s):  
Sreekanth K. Mahadeva ◽  
Zhi-Yong Quan ◽  
Jin-Cheng Fan ◽  
Hasan B. Albargi ◽  
Gillian A Gehring ◽  
...  
Keyword(s):  
Band Gap ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Ambient Conditions ◽  
Zno Film ◽  
Band Gap Engineering ◽  
Sputtered Films ◽  
Doped Zno ◽  
Mg Doped ◽  
Comprehensive Study

ABSTRACTMg doped ZnO thin films were prepared by DC/RF magnetron co-sputtering in (Ar+O2) ambient conditions using metallic Mg and Zn targets. We present a comprehensive study of the effects of film thickness on the structural, optical and magnetic properties. Room temperature ferromagnetism was observed in the films and the saturation magnetization (MS) increases at first as the film’s thickness increases and then decreases. The MS value as high as ∼15.76 emu/cm3 was achieved for the Mg-doped ZnO film of thickness 120 nm. The optical band gap of the films determined to be in the range 3.42 to 3.52 eV.

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

Robust room temperature ferromagnetism and band gap tuning in nonmagnetic Mg doped ZnO films

2017 ◽  
Vol 399 ◽  
pp. 751-757 ◽  
Author(s):  
Zhiyong Quan ◽  
Xia Liu ◽  
Yan Qi ◽  
Zhilin Song ◽  
Shifei Qi ◽  
...  
Keyword(s):  
Band Gap ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Films ◽  
Doped Zno ◽  
Band Gap Tuning ◽  
Mg Doped

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.

Room temperature ferromagnetism in Sb doped ZnO

2021 ◽  
Vol 529 ◽  
pp. 167908
Author(s):  
Cai-Qin Luo ◽  
Si-Cong Zhu ◽  
Chi Xu ◽  
Shengqiang Zhou ◽  
Chi-Hang Lam ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Doped Zno

Robust Room-Temperature Ferromagnetism with Giant Anisotropy in Nd-Doped ZnO Nanowire Arrays

Nano Letters ◽  
2012 ◽  
Vol 12 (8) ◽  
pp. 3994-4000 ◽  
Author(s):  
Dandan Wang ◽  
Qian Chen ◽  
Guozhong Xing ◽  
Jiabao Yi ◽  
Saidur Rahman Bakaul ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Nanowire Arrays ◽  
Zno Nanowire ◽  
Zno Nanowire Arrays ◽  
Doped Zno
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