National Institute Of Materials Physics - Romania

Publications

5088 articles found

1. Structural, magneto-optical and dielectric properties of phosphate tellurite glasses

Authors: Polosan, S; Ganea, P; Nitescu, A

Published: NOV 2021, MATERIALS RESEARCH BULLETIN, 143, 111455, DOI: 10.1016/j.materresbull.2021.111455

2. Structural, electrical properties and photoluminescence analyses of the terbium doped barium titanate

Authors: Cernea, M; Secu, M; Radu, R; Ganea, P; Surdu, VA; Trusca, R; Vasile, ET; Secu, EC

Published: OCT 15 2021, JOURNAL OF ALLOYS AND COMPOUNDS, 878, 160380, DOI: 10.1016/j.jallcom.2021.160380

Multifunctional materials integrating optical and electric properties into a composite or into a doped single-phase material have attracted much attention from scientists for future optoelectronic devices. In this work, polycrystalline Ba1-xTbxTiO3, x = 0.00, 0.01 and 0.05 materials were synthesized by hydrothermal route and their photoluminescence and dielectric properties were studied. The as-prepared powders showed a microstructure consisting of grains with the shape of cube; and average particle size ranging from 75 nm to 150 nm. The investigated temperature dependence of dielectric permittivity of Ba1-xTbxTiO3 ceramics revealed a decrease of the Curie temperature (Tc) with increasing terbium content, and a more pronounced degree of diffuseness of phase transition. The resistivity at room temperature was discussed in terms of positive temperature coefficient of resistance (PTRC) effect. UV-vis reflectance spectra of Ba1-xTbxTiO3 samples showed a decrease of the band gap energy with the increase of Tb amount, due to the band-gap narrowing effect. The photoluminescence spectra recorded for Tb doped BaTiO3 materials, at 80 K, evidenced the typical f-f luminescence lines of the Tb3+ accompanied the broad luminescence band at about 425 nm due to self-trapped exciton recombination. These results demonstrated that the terbium enhances the dielectric properties and photoluminescence simultaneously, being suitable for electronic applications. (C) 2021 Elsevier B.V. All rights reserved.

3. Laser synthesis of Ni(x)ZnyO/reduced graphene oxide/carbon nanotube electrodes for energy storage applications

Authors: Lebiere, PG; del Pino, AP; Logofatu, C; Gyorgy, E

Published: OCT 15 2021, APPLIED SURFACE SCIENCE, 563, 150234, DOI: 10.1016/j.apsusc.2021.150234

4. Electro-active properties of nanostructured films of cytosine and guanine nucleobases

Authors: Socol, M; Trupina, L; Galca, AC; Chirila, C; Stan, GE; Vlaicu, AM; Stanciu, AE; Boni, AG; Botea, M; Stanculescu, A; Pintilie, L; Borca, B

Published: OCT 8 2021, NANOTECHNOLOGY, 32, 415702, DOI: 10.1088/1361-6528/ac10e4

5. Functionalization of basalt fibers with ZnO nanostructures by electroless deposition for improving the interfacial adhesion of basalt fibers/epoxy resin composites

Authors: Preda, N; Costas, A; Lilli, M; Sbardella, F; Scheffler, C; Tirillo, J; Sarasini, F

Published: OCT 2021, COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 149, 106488, DOI: 10.1016/j.compositesa.2021.106488

6. Morpho-structural properties of ZnSe, TiO2-ZnSe materials and enzymatic activity of their bioinorganic hybrids with lysozyme

Authors: Anastasescu, C; Gifu, IC; Negrila, C; Socoteanu, R; Atkinson, I; Calderon-Moreno, JM; Munteanu, C; Plavan, G; Strungaru, SA; Cheatham, B; Malaroiu, AV; Teodorescu, VS; Anastasescu, M; Zaharescu, M; Balint, I; Lazarescu, V

Published: OCT 2021, MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 272, 115350, DOI: 10.1016/j.mseb.2021.115350

7. Magneto-optical properties of borophosphate glasses co-doped with Tb3+ and Dy(3+)ions

Authors: Dinca, MC; Sava, BA; Galca, AC; Kuncser, V; Iacob, N; Stan, GE; Boroica, L; Filip, AV; Elisa, M

Published: SEP 15 2021, JOURNAL OF NON-CRYSTALLINE SOLIDS, 568, 120967, DOI: 10.1016/j.jnoncrysol.2021.120967

8. Comparative investigation of structural, EPR, optical and photoluminescence properties of nanostructured LaPO4:Ce/RE/Me and LaPO4:Yb/Er phosphors prepared by co-precipitation method

Authors: AitMellal, O; Oufni, L; Messous, MY; Trandafir, MM; Chirica, IM; Florea, M; Neatu, S; Rostas, AM; Secu, M; Neatu, F

Published: SEP 2021, JOURNAL OF SOLID STATE CHEMISTRY, 301, 122310, DOI: 10.1016/j.jssc.2021.122310

9. Experimental and numerical simulation of deposition time effect on ZnS thin films for CZTS-based solar cells

Authors: Khaaissa, Y; Talbi, A; Nouneh, K; El Khouja, O; Ahmoum, H; Galca, AC; Belahmar, A; Li, GJ; Wang, Q

Published: SEP 2021, OPTICAL AND QUANTUM ELECTRONICS, 53, 487, DOI: 10.1007/s11082-021-03143-z

10. Recent progress in electrocatalysts and electrodes for portable fuel cells

Authors: Neatu, S; Neatu, F; Chirica, IM; Borbath, I; Talas, E; Tompos, A; Somacescu, S; Osiceanu, P; Folgado, MA; Chaparro, AM; Florea, M

Published: AUG 28 2021, JOURNAL OF MATERIALS CHEMISTRY A, 9, DOI: 10.1039/d1ta03644k