Zobrazeno 1 - 10
of 76
pro vyhledávání: '"O. Valassiades"'
Autor:
Spiridon Kassavetis, O. Valassiades, C. Koidis, Argiris Laskarakis, N. A. Hastas, Stergios Logothetidis
Publikováno v:
physica status solidi (a). 207:1581-1585
The properties of Al-doped ZnO (AZO) thin films deposited by pulsed DC magnetron sputtering under various target power on polyethylene terephthalate (PET) substrates have been investigated. In situ and real-time spectroscopic ellipsometry (1.5-6.5 eV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b822b9e40d585f9915a194b07b8fb4eb
https://doi.org/10.1002/pssa.200983767
https://doi.org/10.1002/pssa.200983767
Publikováno v:
Journal of Applied Physics. 96:6504-6511
A method of multicarrier analysis of semiconducting β-FeSi2 thin films is described, based on Hall and magnetoresistance data from variable magnetic field measurements. We exploit both the longitudinal and transverse resistivity components to extrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b83eab648bcc9160e50d203382fbff74
https://doi.org/10.1063/1.1815052
https://doi.org/10.1063/1.1815052
Autor:
Bo Monemar, B. Arnaudov, O. Valassiades, S. Evtimova, M. Heuken, Plamen Paskov, Tanja Paskova
Publikováno v:
physica status solidi (c). :2635-2638
We study longitudinal electron transport in InGaN/GaN multiple quantum well (MQW) structures at moderate magnetic field. A step-wise behaviour in magnetic field dependences of both the Hall coefficient and the magnetoresistivity is explained by a mag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99e5846c8c7f70c74281634aed615eeb
https://doi.org/10.1002/pssc.200303307
https://doi.org/10.1002/pssc.200303307
Autor:
E. Th. Papaioannou, O. Valassiades, N. K. Flevaris, Panagiotis Poulopoulos, Mavroeidis Angelakeris
Publikováno v:
Sensors and Actuators A: Physical. 106:91-95
Ag–Co multilayers with very thin Co layers exhibit self-organized nanogranular structure and large values of giant magnetoresistance (GMR). In this work, a third non-magnetic element X (X=Cu, Pt, Si) is added to the Ag layer and the influence of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d076857d9a38fa0a6bb282eee8b65f7f
https://doi.org/10.1016/s0924-4247(03)00141-9
https://doi.org/10.1016/s0924-4247(03)00141-9
Publikováno v:
physica status solidi (b). 236:597-613
We apply the Lippmann-Schwinger equation for obtaining the scattering amplitudes and conductance as a function of Fermi energy for electrons scattering from one and two point defects in a two-dimensional quantum wire. Further, we discuss the first an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b8b2258cb8e1c246110e76366e99c83
https://doi.org/10.1002/pssb.200301643
https://doi.org/10.1002/pssb.200301643
Publikováno v:
Superconductor Science and Technology. 11:757-765
Magnetic properties of a series of Mg-doped granular samples were studied by means of vibrating-sample and SQUID magnetometry. The equilibrium moment measured after the sample demagnetization gave evidence that the surface barrier effects can be negl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fb567abe2c4c5db84a34e5a745e018a
https://doi.org/10.1088/0953-2048/11/8/008
https://doi.org/10.1088/0953-2048/11/8/008
Autor:
Panagiotis Poulopoulos, N. K. Flevaris, O. Valassiades, Orestis Kalogirou, J. Stoemenos, D. Niarchos, Mavroeidis Angelakeris
Publikováno v:
Journal of Magnetism and Magnetic Materials. 165:334-337
Ag Co multilayers were prepared on various substrates (Si, polyimide and glass) by e-beam evaporation under ultra high vacuum. X-ray diffraction and high resolution electron microscopy studies showed a deterioration of multilayer structure upon reduc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ad68f4caba4c77dd969050ac72225c1
https://doi.org/10.1016/s0304-8853(96)00546-x
https://doi.org/10.1016/s0304-8853(96)00546-x
Autor:
C.L. Mitsas, D. I. Siapkas, D. H. Tassis, Charalabos A. Dimitriadis, Triantafillia Zorba, Mavroeidis Angelakeris, George Kiriakidis, O. Valassiades
Publikováno v:
Applied Surface Science. 102:178-183
High quality β-FeSi 2 thin films were grown on Si〈100〉 substrates by UHV electron beam evaporation of α-Si/Fe multilayers and annealed by conventional vacuum furnace and rapid thermal techniques. Infrared spectroscopy (reflectance and transmitt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0ea08cdbc0d9baa91b852753a9276c0
https://doi.org/10.1016/0169-4332(96)00043-8
https://doi.org/10.1016/0169-4332(96)00043-8
Autor:
N. K. Flevaris, Evangelos Th. Papaioannou, Mavroeidis Angelakeris, Panagiotis Poulopoulos, Konstantinos Simeonidis, O. Valassiades, Ivan Kostic, Nikolaos Vouroutzis
Publikováno v:
Journal of Magnetism and Magnetic Materials. :E1323-E1325
Arrays of Pt and Polymethyl methacrylate (PMMA) orthogonal stripes were patterned on Si substrates by e-beam lithography. Co/Pt multilayers were deposited on these substrates, by e-beam evaporation. Scanning electron microscopy and atomic force micro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e8c24c6bbb3f8f92f2c9f6a40f0715a
https://doi.org/10.1016/j.jmmm.2003.12.194
https://doi.org/10.1016/j.jmmm.2003.12.194
Autor:
M. Heuken, S. Evtimova, Plamen Paskov, Tanja Paskova, O. Valassiades, Bo Monemar, B. Arnaudov
Publikováno v:
Applied Physics Letters. 83:2590-2592
We study longitudinal electron transport in InGaN/GaN multiple quantum wells (MQWs) at moderate magnetic fields. We observe a stepwise behavior of both the Hall coefficient and magnetoresistivity. The peculiarities are explained by a magnetic-field-i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d363ee92bac9926fac65779fe776338b
https://doi.org/10.1063/1.1613999
https://doi.org/10.1063/1.1613999