scholarly journals Effect of dopants on thermal stability and self-diffusion in iron-nitride thin films

2014 ◽  
Vol 90 (14) ◽  
Author(s):  
Akhil Tayal ◽  
Mukul Gupta ◽  
N. P. Lalla ◽  
Ajay Gupta ◽  
M. Horisberger ◽  
...  
2014 ◽  
Vol 116 (22) ◽  
pp. 222206 ◽  
Author(s):  
Akhil Tayal ◽  
Mukul Gupta ◽  
D. Kumar ◽  
V. R. Reddy ◽  
Ajay Gupta ◽  
...  

Author(s):  
Niti Niti ◽  
Yogesh Kumar ◽  
Seema Seema ◽  
V R Reddy ◽  
J. V. Vas ◽  
...  

Abstract In this work, we investigated the effect of Ag doping (2-20 at.%) on the phase formation of iron mononitride (FeN) thin films. Together with deposition of FeN using reactive dc magnetron sputtering, Ag was also co-sputtered at various doping levels between 2-20 at.%. We found that doping of Ag around 5 at.% is optimum to not only improve the thermal stability of FeN but also to reduce intrinsic defects that are invariably present in (even in epitaxial) FeN. Conversion electron Mössbauer spectroscopy and N K-edge x-ray near edge absorption measurements clearly reveal a reduction of defects in Ag doped FeN samples. Moreover, Fe self-diffusion measurements carried out using secondary ion mass spectroscopy depth-profiling and polarized neutron reflectivity in 57Fe enriched samples exhibit an appreciable reduction in Fe self-diffusion in Ag doped FeN samples. Ag being immiscible with Fe and non-reactive with N, occupies grain-boundary positions as nanoparticles and prohibits the fast Fe self-diffusion in FeN.


2015 ◽  
Vol 650 ◽  
pp. 647-653 ◽  
Author(s):  
Akhil Tayal ◽  
Mukul Gupta ◽  
Nidhi Pandey ◽  
Ajay Gupta ◽  
Michael Horisberger ◽  
...  

1997 ◽  
Vol 91 (3) ◽  
pp. 215-219 ◽  
Author(s):  
Xing-zhao Ding ◽  
Fu-min Zhang ◽  
Yi-lin Sun ◽  
Zu-yao Zhou ◽  
Xi Wang ◽  
...  

2021 ◽  
Vol 46 (5) ◽  
pp. 4137-4153
Author(s):  
Neha Verma ◽  
Rob Delhez ◽  
Niek M. van der Pers ◽  
Frans D. Tichelaar ◽  
Amarante J. Böttger

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4439
Author(s):  
Shui-Yang Lien ◽  
Yu-Hao Chen ◽  
Wen-Ray Chen ◽  
Chuan-Hsi Liu ◽  
Chien-Jung Huang

In this study, adding CsPbI3 quantum dots to organic perovskite methylamine lead triiodide (CH3NH3PbI3) to form a doped perovskite film filmed by different temperatures was found to effectively reduce the formation of unsaturated metal Pb. Doping a small amount of CsPbI3 quantum dots could enhance thermal stability and improve surface defects. The electron mobility of the doped film was 2.5 times higher than the pristine film. This was a major breakthrough for inorganic quantum dot doped organic perovskite thin films.


RSC Advances ◽  
2020 ◽  
Vol 10 (19) ◽  
pp. 11219-11224
Author(s):  
Wei Zhang ◽  
Xiaoxiong Jia ◽  
Rui Wang ◽  
Huihui Liu ◽  
Zhengyu Xiao ◽  
...  

Thin films with perpendicular magnetic anisotropy (PMA) play an essential role in the development of technologies due to their excellent thermal stability and potential application in devices with high density, high stability, and low energy consumption.


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