Influence Of Zn Concentration On The Size And Optical Properties Of ZnO Nanocrystals In Silica Matrix Grown By RF Co-Sputter Deposition

2013 ◽  
Vol 4 (5) ◽  
pp. 343-346 ◽  
Author(s):  
V. V. Siva Kumar
Author(s):  
Nandiguim Lamaï ◽  
Désiré Allassem ◽  
Alexis Mouangué Nanimina ◽  
Djimako Bongo ◽  
Togdjim Jonas

In this work, we discuss the magneto-optical properties according to the orientation of 15nm-sized cobalt ferrite blocked in a silica matrix in comparison to the study done on 20nm-sized cobalt ferrite. This measurement shows that it is possible to increase the remanence of the Faraday effect by creating a magnetic orientation in the solid matrix, which is interesting for the production of self-polarized components. In addition, this remanence is greater for 15 nm than for 20 nm.A gelation field applied perpendicular to the plane of the layer therefore produces a preferential orientation of the magnetic moments in the direction of the field applied during the measurement.


2004 ◽  
Vol 39 (12) ◽  
pp. 4017-4019 ◽  
Author(s):  
Dae Wook Choi ◽  
Chun Woo Lim ◽  
Sang Ho Sohn

2003 ◽  
Vol 13 (12) ◽  
pp. 3079-3084 ◽  
Author(s):  
Carla Cannas ◽  
Mariano Casu ◽  
Marina Mainas ◽  
Anna Musinu ◽  
Giorgio Piccaluga ◽  
...  

2018 ◽  
Vol 42 (12) ◽  
pp. 9635-9644 ◽  
Author(s):  
Ilaria Zanoni ◽  
Valentina Fiorini ◽  
Marcos Rosado ◽  
Belén Ballesteros ◽  
Maria Androulidaki ◽  
...  

We designed a multi-scale process, and obtained luminescent powders with preserved optical properties from molecular scale to microscale.


2019 ◽  
Vol 102 ◽  
pp. 104595 ◽  
Author(s):  
Oleksandr Dobrozhan ◽  
Oleksii Diachenko ◽  
Maksym Kolesnyk ◽  
Andriy Stepanenko ◽  
Serhii Vorobiov ◽  
...  

2012 ◽  
Vol 554-556 ◽  
pp. 70-75
Author(s):  
Hui Juan Tian ◽  
Jun Bo Xu ◽  
Ya Jun Tian ◽  
Hao Wen

The morphological and optical properties of ZnO nanocrystals prepared by thermal evaporation of Zn powders were studied at both upstream and downstream under different O2flow rates. The morphological evolution was observed by scanning electron microscopy. With O2flow rates changing from 0.25 sccm to 1 sccm, the caps of the ZnO nanonails become bigger and the stems gradually disappear at upstream, and the diameters at the top of ZnO nanorods become thicker and the length become longer at downstream. Room temperature PL study shows that UV emission is relatively enhanced with increasing O2flow rates. Computational fluid dynamics simulation was performed, which indicates that the morphological evolution of the ZnO structures results from the competition between the axial growth and the radial growth based on different O2and Zn vapor partial pressure.


2017 ◽  
Vol 396 ◽  
pp. 1528-1538 ◽  
Author(s):  
Asma Tabib ◽  
Wiem Bouslama ◽  
Brigitte Sieber ◽  
Ahmed Addad ◽  
Habib Elhouichet ◽  
...  

2006 ◽  
Vol 96 (2-3) ◽  
pp. 296-300 ◽  
Author(s):  
Hailin Qiu ◽  
Chuanbao Cao ◽  
Dazhi Wang ◽  
Hesun Zhu

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