Perspectives on oblique angle deposition of thin films: From fundamentals to devices

Device simulation of 17.3% efficient lead-free all-perovskite tandem solar cell

Simulation of high efficiency SnS-based solar cells with SCAPS

On the Physical Vapour Deposition (PVD): Evolution of Magnetron Sputtering Processes for Industrial Applications

3D-Ising ferromagnetic characteristics and magnetocaloric study in Pr0.4Eu0.2Sr0.4MnO3 manganite

The bilayered LaSr2Mn2O7 manganite was synthesized by the sol–gel process at different pH values (3.5, 7, and 9.5) and different sintering temperatures (1553, 1623, and 1723 K) to investigate the effects of growth conditions upon the structural and electrical properties of the samples under investigation. X-Ray diffraction and FT-IR spectroscopy techniques confirm the phase formation for all samples. However, samples sintered at 1553, 1623, and 1723 K, and formed at pH = 7 are single phased having a tetragonal structure. Study of these single-phased samples indicates that with increase in the sintering temperature from 1553 to 1723 K, the average grain size increases from ~200 to ~1000 nm. To investigate the influence of grain size on the conduction mechanism, resistivity of the samples was measured as a function of temperature. The data obtained was analyzed by the adiabatic small polaron hopping model. These analyses show the influence of grain size on the parameters obtained by fitting the data by the above models.

Effects of pH and sintering temperature on the synthesis and electrical properties of the bilayered LaSr 2 Mn 2 O 7 manganite prepared by the sol-gel process

Effects of rare earth ions substitution on the magnetocaloric and critical behavior of La0.6A0.2Sr0.2MnO3 (A=Pr, Nd, Ce) manganite

Effects of strain on the magnetic and transport properties of the epitaxial La0.5Ca0.5MnO3 thin films

Origin of enhanced multiferroic properties in Bi 0.85-x La 0.15 Ho x FeO 3 nanopowders

We have deposited diamond-like carbon (DLC) films on glass and Si substrates with direct ion beam deposition technique and investigated the effect of N2 doping on their structural, mechanical, and optical properties. The DLC coatings were doped with nitrogen under different flow rates of 5, 10, 20, 40, and 50 sccm. Morphological characteristics investigation of the prepared samples showed decrement in their average roughness from 4.1 to 0.68 nm. Raman studies showed that the number of graphitic sp2 bonding increased with N doping. By increasing the N2 content, the graphite cluster size increased. FTIR measurement revealed the functional groups available in the prepared samples. UV–Vis analysis showed that the optical transmission of nitrogen-doped DLC (N-DLC) coatings decreased when N2 content increased from 5 to 40 sccm followed by decrement in both the optical band gap and the internal stress. Finally, the mechanical properties such as hardness and elastic modulus decreased by increasing N2 content from 5 to 40 sccm.

Modification of optical and mechanical properties of nitrogen doped diamond-like carbon layers

M.H. Ehsani

Papers

Effects of pH and sintering temperature on the synthesis and electrical properties of the bilayered LaSr 2 Mn 2 O 7 manganite prepared by the sol-gel process

Effects of rare earth ions substitution on the magnetocaloric and critical behavior of La0.6A0.2Sr0.2MnO3 (A=Pr, Nd, Ce) manganite

Effects of strain on the magnetic and transport properties of the epitaxial La0.5Ca0.5MnO3 thin films

Origin of enhanced multiferroic properties in Bi 0.85-x La 0.15 Ho x FeO 3 nanopowders

Modification of optical and mechanical properties of nitrogen doped diamond-like carbon layers