Results 41 to 50 of about 40,261 (187)

Perspective on defect characterization in semiconductors by positron annihilation spectroscopy

Journal of Applied Physics
This Perspective focuses on experimental and theoretical aspects of positron annihilation spectroscopy. This set of methods is highly suitable for identifying and quantifying vacancy-type defects in semiconductors and also allows for analyzing their ...
I. Makkonen, Filip Tuomisto
semanticscholar   +1 more source

Quality of Heusler Single Crystals Examined by Depth Dependent Positron Annihilation Techniques

, 2014
Heusler compounds exhibit a wide range of different electronic ground states and are hence expected to be applicable as functional materials in novel electronic and spintronic devices.
Bauer, A, Böni, P, Ceeh, H, Eijt, S W H, Gigl, T, Hugenschmidt, C, Neubauer, A, Pfleiderer, C, Piochacz, C, Reiner, M, Schut, H, Weber, J   +11 more
core   +1 more source

Investigation of corrosion defects in titanium by positron annihilation

Nukleonika, 2015
The positron annihilation method was used to study the formation of defects in titanium samples during their corrosion in the vapor of a 3% HCl solution.
Pietrzak Ryszard, Szatanik Roman
doaj   +1 more source

Positron-electron autocorrelation function study of E-center in silicon [PDF]

, 2003
A study was conducted on the positron-electron autocorrelation function of defect center in silicon. The positron annihilation lifetime spectroscopy (PALS) spectra taken on the as-grown and defected samples of silicon were studied.
Baling, CD, Biasini, M, China, HM, Ferro, G, Fung, S, Gong, M, Ho, KF, Ng, KP   +7 more
core   +1 more source

Studies on healthy and neoplastic tissues using positron annihilation lifetime spectroscopy and focused histopathological imaging

Scientific Reports, 2020
Samples of healthy and neoplastic myometrial tissues were investigated using Positron Annihilation Lifetime Spectroscopy (PALS). Meaningful differences between normal and diseased tissues were observed for each patient.
B. Zgardzińska, G. Chołubek, Bożena Jarosz, K. Wysogląd, M. Gorgol, M. Goździuk, M. Chołubek, B. Jasińska   +7 more
semanticscholar   +1 more source

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

APL Materials, 2013
Positron annihilation lifetime spectroscopy and positron-electron momentum density (PEMD) studies on multilayers of PbSe nanocrystals (NCs), supported by transmission electron microscopy, show that positrons are strongly trapped at NC surfaces, where ...
L. Chai, W. Al-Sawai, Y. Gao, A. J. Houtepen, P. E. Mijnarends, B. Barbiellini, H. Schut, L. C. van Schaarenburg, M. A. van Huis, L. Ravelli, W. Egger, S. Kaprzyk, A. Bansil, S. W. H. Eijt   +13 more
doaj   +1 more source

Study of irradiation-induced vacancy-type defects in tungsten using positron annihilation spectroscopy

Nuclear Materials and Energy, 2023
Tungsten has been considered as a potential candidate material for the application of plasma-facing components in magnetic confinement fusion reactors. Fusion neutrons introduce severe displacement damage into the first-wall materials along with a high ...
Renjith Ramachandran, S. Balaji
doaj   +1 more source

Correlation between Zn vacancies and photoluminescence emission in ZnO films. [PDF]

, 2006
Photoluminescence and positron annihilation spectroscopy have been used to characterize and identify vacancy-type defects produced in ZnO films grown on sapphire by metal-organic chemical-vapor deposition. The photoluminescence of the samples in the near
A. Zubiaga, F. Plazaola, F. Tuomisto, J. A. García, J. Zuñiga Pérez, K. Saarinen, Kaldis E., V. Muñoz-Sanjosé   +7 more
core   +2 more sources

Investigation of the chemical vicinity of crystal defects in ion-irradiated Mg and AZ31 with coincident Doppler broadening spectroscopy

, 2007
Crystal defects in magnesium and magnesium based alloys like AZ31 are of major importance for the understanding of their macroscopic properties. We have investigated defects and their chemical surrounding in Mg and AZ31 on an atomic scale with Doppler ...
A. Dupasquier, A. v. Veen, C. Hugenschmidt, C. Hugenschmidt, F. Pravdic, G. P. Williams, J. F. Ziegler, J. R. MacDonald, K. Schreckenbach, M. Stadlbauer, M. Stadlbauer, N. W. Ashcroft, P. Böni, P. Erhart, P. Skubisz, R. Krause-Rehberg, W. Bauer-Kugelmann, Y. Nagai   +17 more
core   +1 more source

Positron annihilation spectroscopy on a beam of positrons the LEPTA facility

EPJ Web of Conferences, 2017
The results and possibilities of the samples surfaces research by the Doppler method of positron annihilation spectroscopy (PAS) for a monochromatic beam of positrons at the LEPTA facility are presented in this paper.
Ahmanova E.V., Eseev M.K., Kobets A.G., Meshkov I.N., Orlov O.S., Sidorin A.A., Siemek K., Horodek P.   +7 more
doaj   +1 more source