scholarly journals Atomic layer deposition of nickel–cobalt spinel thin films

2017 ◽  
Vol 46 (14) ◽  
pp. 4796-4805 ◽  
Author(s):  
D. J. Hagen ◽  
T. S. Tripathi ◽  
M. Karppinen

Combining ALD cycles for NiO and Co3O4, (Co1−xNix)3O4 films with a wide range of electrical and magnetic properties are obtained.

2017 ◽  
Vol 9 (42) ◽  
pp. 36980-36988 ◽  
Author(s):  
Calvin D. Pham ◽  
Jeffrey Chang ◽  
Mark A. Zurbuchen ◽  
Jane P. Chang

2018 ◽  
Vol 9 ◽  
pp. 119-128 ◽  
Author(s):  
Kristjan Kalam ◽  
Helina Seemen ◽  
Peeter Ritslaid ◽  
Mihkel Rähn ◽  
Aile Tamm ◽  
...  

Thin solid films consisting of ZrO2 and Fe2O3 were grown by atomic layer deposition (ALD) at 400 °C. Metastable phases of ZrO2 were stabilized by Fe2O3 doping. The number of alternating ZrO2 and Fe2O3 deposition cycles were varied in order to achieve films with different cation ratios. The influence of annealing on the composition and structure of the thin films was investigated. Additionally, the influence of composition and structure on electrical and magnetic properties was studied. Several samples exhibited a measurable saturation magnetization and most of the samples exhibited a charge polarization. Both phenomena were observed in the sample with a Zr/Fe atomic ratio of 2.0.


2015 ◽  
Vol 3 (37) ◽  
pp. 9620-9630 ◽  
Author(s):  
Ali Haider ◽  
Seda Kizir ◽  
Cagla Ozgit-Akgun ◽  
Eda Goldenberg ◽  
Shahid Ali Leghari ◽  
...  

Hollow cathode plasma assisted atomic layer deposited InxGa1−xN alloys show successful tunability of the optical band gap by changing the In concentration in a wide range.


2014 ◽  
Vol 5 (24) ◽  
pp. 4319-4323 ◽  
Author(s):  
Pasi Jalkanen ◽  
Vladimir Tuboltsev ◽  
Benoît Marchand ◽  
Alexander Savin ◽  
Manjunath Puttaswamy ◽  
...  

2013 ◽  
Vol 465-466 ◽  
pp. 916-921 ◽  
Author(s):  
Rosniza Hussin ◽  
Kwang Leong Choy ◽  
Xiang Hui Hou

Atomic layer deposition (ALD) is a precision growth technique that is able to deposit either amorphous or epitaxial layer on a wide range of substrates. Multilayer thin films have been widely studied because their properties are different from those of bulk materials constituents owing to the two-dimensional films and high density of interfaces. Multilayer nanostructured thin films were fabricated on silicon and glass substrates by ALD. The optical and electrical of multilayer ZnO/TiO2/ZnO films were investigated. The microstructure compositions and surface morphology of these multilayer films were analyzed by X-ray diffraction (XRD), Atomic force microscope (AFM) and Scanning electron microscope (SEM). The optical properties were characterized using photoluminescence (PL) and UV-VIS spectroscopy. XRD patterns confirmed that ZnO with wutrtize crystal structure and TiO2 with anatase structure were presented. The degree of crystallinity of multilayer thin films has been improved through the deposition of ZnO. The intensity of UV luminescence of the multilayer has increased as compared to the single layer TiO2 and bilayer ZnO/TiO2. The multilayer ZnO/TiO2/ZnO has high transmittance (above 80%) in visible region. All the result suggested that the use of multilayer thin films effectively enhanced the quality of films crystallinity and optical properties as compared to single layer ZnO and bilayer ZnO/TiO2.


2020 ◽  
Vol 709 ◽  
pp. 138206
Author(s):  
Yijun Zhang ◽  
Wei Ren ◽  
Gang Niu ◽  
Chao Li ◽  
Chenying Wang ◽  
...  

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