Determination of oxygen nonstoichiometry in La0.7Sr0.3MnO3–δ on oxide substrates by structural refractometry

Optical and X-Ray Studies of Indium Oxide Films Deposited by DC Magnetron Sputtering

“…Annealing leads to the unification of the properties of the studied films and eliminates the inhomogeneity of the refractive index in the thickness direction (Table II) [18][19][20]. Now, we have confirmed these results based on the interference pattern observed in the spectrophotometric data (Fig.…”

“…Ellipsometric measurements [18][19][20] show an increase in the thickness d of the films with a decrease in the substrate temperature. The inhomogeneity of the films also increases with a decrease in the substrate temperature T .…”

“…In this paper, we summarize the results of our previous studies on the structure and optical properties of In 2 O 3 films deposited onto Al 2 O 3 (012) substrates in various modes of direct current (DC) magnetron sputtering [15][16][17][18][19][20][21].…”

Tailoring optical, magnetic and electric behavior of lanthanum strontium manganite La1−xSrxMnO3(LSM) nanopowders prepared via a co-precipitation method with different Sr2+ion contents

“…However, the values obtained were nearly similar to the given values of LSMO lms grown on the various substrates in which the values were in the range of 2.06 to 2.46. 35 Otherwise, both static and high frequency dielectric constants are determined for all the samples. The high frequency dielectric constant (3 a ) is calculated using the relation: 33…”

Conductive path and local oxygen-vacancy dynamics: Case study of crosshatched oxides

“…In the case of S 1 , ε r ∼ 7.10 (#4), and ε r ∼ 3.67 (#8) in the low field regime, are at a similar level with the values ε r ∼ 4-4.8 in bulk LSMO [50,51] and ε r ∼ 3.39-6.05 in polycrystalline LSMO films. [52] In the high field regime, ε r ∼ 1.99 (#4) and ε r ∼ 0.68 (#8) are much less, and in particular the latter seems unphysically small. If having these two ε r s larger than 3 by assuming a smaller depth to t eff , the low field ε r turns to exceed 11, which is much higher than the reported ε r s. This incongruity implies that the low field conduction at S 1 may obey the PFE mechanism with a few clustered oxygen vacancies, but the conduction in high fields would be involved with some other charge transport process.…”