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

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.

Effect of defects on room-temperature ferromagnetism of Cr-doped ZnO films

2009 ◽  
Vol 60 (4) ◽  
pp. 214-217 ◽  
Author(s):  
L.J. Zhuge ◽  
X.M. Wu ◽  
Z.F. Wu ◽  
X.M. Chen ◽  
Y.D. Meng
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Films ◽  
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.

Room-temperature ferromagnetism of Cu-doped ZnO films deposited by helicon magnetron sputtering

2009 ◽  
Vol 246 (6) ◽  
pp. 1243-1247 ◽  
Author(s):  
Fan-Yong Ran ◽  
Masao Imaoka ◽  
Masaki Tanemura ◽  
Yasuhiko Hayashi ◽  
Tun-Seng Herng ◽  
...  
Keyword(s):  
Magnetron Sputtering ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Zno Films ◽  
Doped Zno

Room temperature ferromagnetism in Mg-doped ZnO nanoparticles

2015 ◽  
Author(s):  
Jaspal Singh ◽  
Pritampal Singh Gill ◽  
A. Vashihth ◽  
N. K. Verma
Keyword(s):  
Zno Nanoparticles ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Doped Zno ◽  
Mg Doped
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