| SM ISO690:2012|
PAIUK, Oleksandr; MESHALKIN, Alexei; STRONSKI, Alexander; ACHIMOVA, Elena; ABASHKIN, Vladimir; PRISACAR, Alexandr; TRIDUH, Ghennadi; LYTVYN, Peter M.; OLEKSENKO, Pavel F.. Nanomultilayer structures of As40S60:Mn–Se composition– properties and direct surface relief formation. In: Materials Science and Condensed Matter Physics. Editia a 8-a, 12-16 septembrie 2016, Chişinău. Chişinău: Institutul de Fizică Aplicată, 2016, p. 253. ISBN 978-9975-9787-1-2.
|Materials Science and Condensed Matter Physics
Editia a 8-a, 2016
Conferința "International Conference on Materials Science and Condensed Matter Physics" |
8-th Edition, Chişinău, Moldova, 12-16 septembrie 2016
In present work properties and the direct one-step relief formation with the use of amorphous chalcogenide multilayers of composition based on As40S60:Mn–Se were studied. Doping with transitional elements changes thermal, optical, structural and magnetic properties of chalcogenide glasses. Properties of As40S60:Mn glasses were studied using XRD and DSC measurements, Raman, optical and positron annihilation spectroscopy. Chalcogenide glasses are diamagnetics, in particular glass of As2S3 composition. Introduction of Mn dopant changes magnetic properties of glasses. Thus, in constant magnetic field (B=6T) dependence of mass magnetization M=M(T), is observed which is characteristic for paramagnetics and ferromagnetics in paramagnetic region of temparature and described by Curie-Weiss law. Amorphous As40S60:Mn–Se nanomultilayers were prepared by cyclic thermal vacuum deposition from two isolated boats with As40S60:Mn and Se chalcogenides on constantly rotated glass substrate at room temperature in one vacuum deposition cycle with chalcogenide thickness of 11nm and Se - 10nm. The total number of nanolayers was 180. Optical transmission was measured in 200-900 nm optical range in order to determine the refractive index, thickness and optical band-gap energy of As40S60:Mn and Se layers and As40S60:Mn–Se nanomultilayers. Diffraction gratings were recorded by two laser beams using different polarizations of light (DPSS green laser, λ=532 nm and power 100 mW) with synchronous diffraction efficiency measurement in first diffraction order using red laser s-polarization 650 nm wavelength. Process of surface relief formation depended on the polarization of recording light beams. Diffraction efficiency of recorded gratings was ~ 7% in absolute value. AFM and Raman data allow to propose the mechanism of solid-state structure conformations in As40S60: Mn–Se multilayer system. Local magnetic properties of gratings surface relief were studied using gradient magnetic force microscopy. It was shown that direct one-step magnetic relief formation is possible during gratings recording on As40S60:Mn–Se nanomultilayer structures. Due to the changes in transmission, reflection, and in thickness under the influence of laser irradiation, As40S60:Mn–Se nanomultilayer structures may be used for effective amplitude-phase optical information recording, for the production of surface-relief optical elements. The research was supported by the project FP–7 SECURE–R21