Defect studies of single crystal and thin film zinc oxide by positron annihilation spectroscopy and cathodoluminescence

2010 ◽  
Author(s):  
Chun-kit To
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Single Crystal ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy

Positron annihilation spectroscopy of proton irradiated single crystal BCC iron

2006 ◽  
Vol 351 (1-3) ◽  
pp. 149-154 ◽  
Author(s):  
Maria A. Okuniewski ◽  
Doug P. Wells ◽  
Farida A. Selim ◽  
Stuart A. Maloy ◽  
Michael R. James ◽  
...  
Keyword(s):  
Single Crystal ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Bcc Iron

scholarly journals Positron annihilation study of defects in electron-irradiated single crystal zinc oxide

2011 ◽  
Vol 262 ◽  
pp. 012059 ◽  
Author(s):  
C K To ◽  
B Yang ◽  
C D Beling ◽  
S Fung ◽  
C C Ling ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Single Crystal ◽  
Positron Annihilation ◽  
Positron Annihilation Study

High-density magnetic-vacancy inclusion in Co2MnGa single crystal probed by spin-polarized positron annihilation spectroscopy

2021 ◽  
Author(s):  
Atsumi Miyashita ◽  
M. Maekawa ◽  
Y. Shimoyama ◽  
N. Seko ◽  
Atsuo Kawasuso ◽  
...  
Keyword(s):  
Single Crystal ◽  
Positron Annihilation ◽  
Electrical Transport ◽  
Positron Annihilation Spectroscopy ◽  
Ordered Structure ◽  
Electrical Transport Properties ◽  
Weyl Semimetal ◽  
Spin Polarized ◽  
B2 Structure

Abstract Co2MnGa is a Weyl semimetal exhibiting giant anomalous Hall and Nernst effects. Using spin-polarized positron annihilation spectroscopy, we examined a Bridgman-grown Co2MnGa single crystal with a nearly perfect L21-ordered structure and a reference Co2MnAl polycrystal with a Mn-Al-disordered B2 structure. We found that a large amount of magnetic vacancies (more than 100 ppm) were included in the Co2MnGa crystal but not the Co2MnAl crystal. We discuss possible reasons for the inclusion of vacancies, the role of vacancies in the development of the ordered structure, and the electronic states associated with the vacancies. Towards the development of Co2MnGa-based devices, the manners for reducing vacancies as well as the influence of vacancies on the electrical transport properties should be considered.

scholarly journals Surfaces of colloidal PbSe nanocrystals probed by thin-film positron annihilation spectroscopy

APL Materials ◽  
2013 ◽  
Vol 1 (2) ◽  
pp. 022111 ◽  
Author(s):  
L. Chai ◽  
W. Al-Sawai ◽  
Y. Gao ◽  
A. J. Houtepen ◽  
P. E. Mijnarends ◽  
...  
Keyword(s):  
Thin Film ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy

Understanding the temperature-dependent evolution of solution processed metal oxide transistor characteristics based on molecular precursor derived amorphous indium zinc oxide

2016 ◽  
Vol 4 (46) ◽  
pp. 10935-10944 ◽  
Author(s):  
Shawn Sanctis ◽  
Rudolf C. Hoffmann ◽  
Ruben Precht ◽  
Wolfgang Anwand ◽  
Jörg J. Schneider
Keyword(s):  
Zinc Oxide ◽  
Metal Oxide ◽  
Positron Annihilation ◽  
Emission Spectroscopy ◽  
Positron Annihilation Spectroscopy ◽  
Temperature Dependent ◽  
Photoelectron Emission ◽  
Solution Processed ◽  
Indium Zinc Oxide ◽  
Molecular Precursor

Photoelectron emission spectroscopy and positron annihilation spectroscopy allow a comprehensive interpretation of the performance of IZO-based TFTs.

scholarly journals The Characterization of MgB2 Thin Film by Slow Positron Annihilation Spectroscopy

2008 ◽  
Vol 17 (2) ◽  
pp. 160-164 ◽  
Author(s):  
C.Y. Lee ◽  
W.N. Kang ◽  
Y. Nagai ◽  
K. Inoue ◽  
M. Hasegawa
Keyword(s):  
Thin Film ◽  
Positron Annihilation ◽  
Positron Annihilation Spectroscopy ◽  
Slow Positron ◽  
Mgb2 Thin Film

Positron annihilation spectroscopic study of hydrothermal grown n-type zinc oxide single crystal

2007 ◽  
Vol 4 (10) ◽  
pp. 3672-3675 ◽  
Author(s):  
C. W. Hui ◽  
Z. D. Zhang ◽  
T. J. Zhou ◽  
C. C. Ling ◽  
C. D. Beling ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Single Crystal ◽  
Spectroscopic Study ◽  
Positron Annihilation
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