Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Iosif Malaescu"'
Publikováno v:
Metals, Vol 14, Iss 7, p 793 (2024)
Two ceramic samples of sodium tantalate (NaTaO3), doped with metal ions of copper (Cu; sample S1) or aluminum (Al; sample S2), were obtained by the sol-gel method. Complex impedance measurements in the frequency range (200 Hz–2 MHz) and at temperat
Externí odkaz:
https://doaj.org/article/aa46cb886e7e4dddb04e7c574d9bf0d3
Publikováno v:
Crystals, Vol 14, Iss 5, p 437 (2024)
Two samples of ZnxMn1−xFe2O4 (x = 0, sample A; and x = 0.4, sample B) were synthesized by the hydrothermal method. From complex impedance measurements in the range 100 Hz–2 MHz and for temperatures T between 30 and 130 °C, the barrier energy bet
Externí odkaz:
https://doaj.org/article/87b2d4b07ade40d7a7321c9f18aead11
Autor:
Paulina Vlazan, Catalin Nicolae Marin, Iosif Malaescu, Gabriela Vlase, Titus Vlase, Maria Poienar, Paula Sfirloaga
Publikováno v:
Applied Sciences, Vol 14, Iss 4, p 1546 (2024)
The synthesis, thermal behavior and electrical properties of a series of undoped and 1% Ga- or Y-doped lanthanum manganite compounds, obtained via the sol–gel technique, are reported. Scanning electron microscopy (SEM/EDX), X-ray diffraction (XRD)
Externí odkaz:
https://doaj.org/article/7040d76c29cf42a08c38e241d0d2ad11
Publikováno v:
Magnetochemistry, Vol 10, Iss 2, p 7 (2024)
Measurements of complex magnetic permeability, μ(f,H) = μ′(f,H) − iμ″(f,H) and dielectric permittivity ε(f,H) = ε′(f,H) − iε″(f,H), in the frequency range, f of (0.4–7) GHz, and polarizing field, H of (0–135) kA/m, were performe
Externí odkaz:
https://doaj.org/article/2db5daef0eff4e1cb12d55d69b514e05
Autor:
Catalin N. Marin, Iosif Malaescu
Publikováno v:
Magnetochemistry, Vol 10, Iss 1, p 4 (2024)
The magnetic permeability (μ), dielectric permittivity (ε) and electrical conductivity (σ) of six elastomer samples obtained by mixing silicone rubber (RTV-530) with a kerosene-based ferrofluid in different volume fractions (φ), 1.31%, 2.59% and
Externí odkaz:
https://doaj.org/article/2adb51f062e74a739610004e42227d3b
Publikováno v:
Materials, Vol 16, Iss 8, p 3130 (2023)
Bismuth ferrite (BiFeO3, BFO) is still widely investigated both because of the great diversity of its possible applications and from the perspective of intrinsic defect engineering in the perovskite structure. Defect control in BiFeO3 semiconductors
Externí odkaz:
https://doaj.org/article/07279113c7884397a7d3e4149357bf6f
Publikováno v:
Materials, Vol 15, Iss 14, p 4764 (2022)
Pure bismuth ferrite (BFO) and BFO with impurity phases (Bi2O3 or Fe2O3) were synthesized by the hydrothermal method. Complex dielectric permittivity (ε) and electrical conductivity (σ) were determined by complex impedance measurements at different
Externí odkaz:
https://doaj.org/article/0b11e769de9349a998cd9d59419b5d22
Publikováno v:
Materials, Vol 15, Iss 6, p 2309 (2022)
Understanding the electrical conduction and dielectric polarization properties of elastomer-based composites is important for the design of flexible and elastic electronic devices and circuits. Five samples were manufactured by mixing silicone rubber
Externí odkaz:
https://doaj.org/article/89e9dbb9db7f49efa9f467ce1271cb5a
Publikováno v:
Advances in Applied Ceramics. 121:247-254
Publikováno v:
Materials Research Bulletin. 164:112281