Pulsed laser deposition of lead-zirconate-titanate thin films and multilayered heterostructures

Structurally Characterized Erbium Alkoxides for Use as an Amphoteric Dopant in PErZT Ceramic Thin Film and Nanoparticles

“…A search of the literature reveals only two Er(OR) 3 had been previously crystallographically characterized including Er 5 (µ 5 -O)(µ 3 -OiPr) 4 (µ-OiPr) 4 -(OiPr) 5 [10,11] and Er(dip) 3 (thf) 2 . [9] The remainder of alkoxylike species possess other metals, [17][18][19][20][21] halides, [22] or polyfunctional ligands [23] which prevents use for generation of high quality ceramic oxide materials due to the potential cross cation, anion, and/or residual ligand contamination.…”

“…[30][31][32] Increasing the steric bulk to the OtBu groups, led to crystallization of the trinuclear 4 which had additional HOtBu bound to it, as shown in Figure 2. Previously, we isolated a Ce/OtBu tetramer [30] that did not possess any Lewis basic solvents (i.e., thf, py, or HOtBu) however, the Er corollary could not be isolated without bound solvents as noted for the pyridine adduct, Er 3 (µ 3 -O)(µ-OtBu) 4 -(OtBu) 3 (py) 3 (7). Again, the py adduct appears to produce the oxo which argues for water present in the py; however, numerous structures using the same solvent did not yield the oxide, so the origin of the oxo is still unproven.…”

“…The various compounds are discussed below in order of the ligand increasing steric bulk of the ligand. Using the more sterically demanding Onep ligand reduced the nuclearity and prevented the formation of an oxo ligand as noted for the smaller OiPr derivative Er 5 (µ 5 -O)(µ 3 -OiPr) 4 (µ-OiPr) 4 (OiPr) 5 . [10,11] The resultant species, identified as [Er(µ-Onep) 2 (Onep)] 4 (1), is consistent with the other Ln-and Group 3 neopentoxide species (Figure 1) [31] wherein, each of the four trigonal bipyramidal (TBP) Er metal centers possess two µ-Onep and one Onep ligand.…”

Experimental Technique with a Pyramidal Indenter Demonstrating The Development of Pyramidal-Shaped Crevice Corrosion In Inconel 600

“…Prevention or amelioration of such conditions defects will reduce crevice resistance. No matter how minor the surface crevice, the resulting corrosion result can lead to failure even in work pieces of Inconel [4][5][6][7][8]. Diamond pyramid hardness indentation can be an excellent test method for the evaluation of the potential for surface crevice corrosion from exposure to corrosive solutions.…”

Hardness and electrochemical behavior of ceramic coatings on Inconel

“…These coatings can be produced by many chemical and physical vapor deposition techniques. One of them, Pulsed Laser Deposition (PLD), is considered as flexible, simple and easily controllable method for producing thin films [7]. Indentation microhardness is a reliable test method for the evaluation of the mechanical property of the coatings.…”