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Dive into the research topics where M. Skapas is active.

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Featured researches published by M. Skapas.


IEEE Transactions on Plasma Science | 2017

Influence of MOCVD Growth Pressure on Magnetoresistance of Nanostructured La-Ca-Mn-O Films Used for Magnetic Field Sensors

Nerija Zurauskiene; Dainius Pavilonis; Jonas Klimantavicius; Saulius Balevicius; Voitech Stankevic; Skirmantas Kersulis; V. Plausinaitiene; A. Abrutis; Rasuole Lukose; M. Skapas; Remigijus Juskenas; Birute Knasiene; Evaldas Naujalis; Joseph M. Law

The results of structure and magnetoresistance (MR) of nanostructured La<sub>1–<italic>x</italic></sub>Ca<sub><italic>x</italic></sub>Mn<sub><italic>y</italic></sub>O<sub>3</sub> (LCMO) films, grown at different gas pressure (from 3 to 7 Torr) by pulse injection metal–organic chemical vapor deposition (MOCVD) technique, are presented. The MR was investigated in pulsed magnetic fields up to 60 T in the temperature range 1.5–294 K. The results were analyzed from the perspective of using these films for magnetic field sensors operating at low temperatures. It was demonstrated that with the increase of Ar + O<sub>2</sub> gas pressure, the surface morphology of the films becomes rougher and grain size increases. Also, the ratio of Mn/(La + Ca) increases with the increase of the pressure. Large MR of the films was observed in a wide temperature range below the ferromagnetic–paramagnetic phase transition. It was shown that at cryogenic temperatures, the films grown at gas pressure of 3 Torr have higher sensitivity in lower magnetic field range (<10 T), while in high magnetic fields (20–60 T), the properties of films grown at higher gas pressure 5–7 Torr are favored. The obtained results allow evaluating the influence of MOCVD growth pressure on MR and sensitivity to the magnetic field of LCMO manganites used for pulsed magnetic field sensors.


IEEE Transactions on Plasma Science | 2017

Magnetoresistance Relaxation Anisotropy of Nanostructured La-Sr(Ca)-Mn-O Films Induced by High-Pulsed Magnetic Fields

Nerija Zurauskiene; Dainius Pavilonis; Jonas Klimantavicius; Saulius Balevicius; Voitech Stankevic; Remigijus Vasiliauskas; V. Plausinaitiene; A. Abrutis; M. Skapas; Remigijus Juskenas

The results of investigation of colossal magnetoresistance relaxation in nanostructured La-Sr(Ca)-Mn-O films upon removal of magnetic field pulse are presented. Thin films having thicknesses of 75–350 nm grown by pulsed injection metal–organic chemical vapor deposition technique were studied in pulsed magnetic fields having duration of 0.9 ms and amplitudes of 2–12 T. It was obtained that “fast” relaxation process occurring in hundred microseconds time scale exhibits anisotropy: the magnitude of remnant resistivity is approximately three times smaller and the process is faster when magnetic field is applied perpendicular to the film plane in comparison with in-plane direction. The dynamics of this relaxation process was analyzed using Kolmogorov–Avrami–Fatuzzo model, taking into account nucleation and reorientation of magnetic domains into equilibrium state. The “fast” remnant relaxation was not observed after the application of longer pulses (20 ms) having amplitude of 60 T. Influence of remnant relaxation on operation of B-scalar magnetic field sensors based on nanostructured manganite films is discussed.


Chemistry of Materials | 2008

Hot-Wire Chemical Vapor Deposition of Chalcogenide Materials for Phase Change Memory Applications

A. Abrutis; V. Plausinaitiene; M. Skapas; C. Wiemer; O. Salicio; Agostino Pirovano; Enrico Varesi; Simon A. Rushworth; Wojciech Gawelda; J. Siegel


Microelectronic Engineering | 2008

Chemical vapor deposition of chalcogenide materials for phase-change memories

A. Abrutis; V. Plausinaitiene; M. Skapas; C. Wiemer; O. Salicio; Massimo Longo; Agostino Pirovano; J. Siegel; Wojciech Gawelda; Simon A. Rushworth; C. Giesen


Journal of Crystal Growth | 2009

Hot-wire chemical vapor growth and characterization of crystalline GeTe films

A. Abrutis; V. Plausinaitiene; M. Skapas; C. Wiemer; Wojciech Gawelda; J. Siegel; Simon A. Rushworth


Thin Solid Films | 2013

Metal-organic chemical vapor deposition of high-k dielectric Ce–Al–O layers from various metal-organic precursors for metal–insulator–metal capacitor applications

A. Abrutis; M. Lukosius; M. Skapas; S. Stanionyte; V. Kubilius; Ch. Wenger; A. Zauner


Microelectronic Engineering | 2011

Metal-insulator-metal capacitors with MOCVD grown Ce-Al-O as a dielectric

M. Lukosius; C. Baristiran-Kaynak; A. Abrutis; M. Skapas; V. Kubilius; A. Zauner; Gerhard Ruhl; Ch. Wenger


Thin Solid Films | 2012

CexAlyOz/TiN stack analysis for Metal–Insulator–Metal applications: Effect of annealing and the metal electrode deposition method

C. Baristiran Kaynak; M. Lukosius; Bernd Tillack; Ch. Wenger; A. Abrutis; M. Skapas


Journal of Cleaner Production | 2018

Industrial technology for mass production of SnO2 nanoparticles and PbO2 microcube/microcross structures from electronic waste

Maksym Tatariants; Samy Yousef; M. Skapas; Remigijus Juskenas; Vidas Makarevicius; Stasė-Irena Lukošiūtė; Gintaras Denafas


IEEE Transactions on Magnetics | 2017

Nanostructured La–Sr–Mn–Co–O Films for Room-Temperature Pulsed Magnetic Field Sensors

Nerija Zurauskiene; Vakaris Rudokas; Saulius Balevicius; Skirmantas Kersulis; Voitech Stankevic; Remigijus Vasiliauskas; V. Plausinaitiene; Milita Vagner; Rasuole Lukose; M. Skapas; Remigijus Juskenas

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Ch. Wenger

Dresden University of Technology

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Nerija Zurauskiene

Vilnius Gediminas Technical University

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Saulius Balevicius

Vilnius Gediminas Technical University

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Voitech Stankevic

Vilnius Gediminas Technical University

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J. Siegel

Spanish National Research Council

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