Cyclic voltammetric studies of nickel hydroxide and cobalt hydroxide thin films in alkali and alkaline earth metal hydroxides

1993 ◽  
Vol 23 (3) ◽  
Author(s):  
P. Vishnu Kamath ◽  
M.F. Ahmed
Keyword(s):  
Thin Films ◽  
Nickel Hydroxide ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Cobalt Hydroxide ◽  
Alkaline Earth Metal ◽  
Cyclic Voltammetric ◽  
Metal Hydroxides ◽  
Voltammetric Studies ◽  
Cyclic Voltammetric Studies

Cyclic voltammetric studies of stabilized α-nickel hydroxide electrode

1999 ◽  
Vol 79 (2) ◽  
pp. 277-280 ◽  
Author(s):  
Liu Bing ◽  
Yuan Huatang ◽  
Zhang Yunshi ◽  
Zhou Zuoxiang ◽  
Song Deying
Keyword(s):  
Nickel Hydroxide ◽  
Cyclic Voltammetric ◽  
Voltammetric Studies ◽  
Cyclic Voltammetric Studies

scholarly journals Effect of Alkaline Earth Metal on AZrOx (A = Mg, Sr, Ba) Memory Application

Gels ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 20
Author(s):  
Ke-Jing Lee ◽  
Yeong-Her Wang
Keyword(s):  
Thin Films ◽  
Oxygen Vacancy ◽  
Alkaline Earth ◽  
Sol Gel ◽  
Earth Metal ◽  
Atomic Radius ◽  
High Resistance State ◽  
Alkaline Earth Metal ◽  
Memory Devices ◽  
Metal Insulator Metal

Zr can be stabilized by the element selected, such as Mg-stabilized Zr (MSZ), thus providing MSZ thin films with potentially wide applications and outstanding properties. This work employed the element from alkaline earth metal stabilized Zr to investigate the electrical properties of sol–gel AZrOx (A = alkaline earth metal; Mg, Sr, Ba) as dielectric layer in metal-insulator–metal resistive random-access memory devices. In addition, the Hume–Rothery rule was used to calculate the different atomic radii of elements. The results show that the hydrolyzed particles, surface roughness, and density of oxygen vacancy decreased with decreased difference in atomic radius between Zr and alkaline earth metal. The MgZrOx (MZO) thin film has fewer particles, smoother surface, and less density of oxygen vacancy than the SrZrOx (SZO) and BaZrOx (BZO) thin films, leading to the lower high resistance state (HRS) current and higher ON/OFF ratio. Thus, a suitable element selection for the sol–gel AZrOx memory devices is helpful for reducing the HRS current and improving the ON/OFF ratio. These results were obtained possibly because Mg has a similar atomic radius as Zr and the MgOx-stabilized ZrOx.

Synthesizing Alkaline Earth Metal Hydroxides Nanoparticles through an Innovative, Single-Step and Eco-Friendly Method

2019 ◽  
Vol 286 ◽  
pp. 3-14 ◽  
Author(s):  
Giuliana Taglieri ◽  
Valeria Daniele ◽  
Ludovico Macera
Keyword(s):  
Alkaline Earth ◽  
Aqueous Suspension ◽  
Exchange Process ◽  
Earth Metal ◽  
Single Step ◽  
Alkaline Earth Metal ◽  
Monoclinic Crystal ◽  
Metal Hydroxides ◽  
Crystal Lattices ◽  
Ion Exchange Process

The objective of this paper is to introduce a patented and eco-friendly method to synthesize aqueous suspension of all types of alkaline-earth metal hydroxides nanoparticles (NPs). This method is based on an ion exchange process; the exchange takes place at ambient temperature/pressure, starts from cheap or renewable reagents and, in one single step, results in the creation of the crystalline desired nanoparticles in only a few minutes. In terms of structural and morphological features, the synthesized nanoparticles are characterized by means of XRD-Rietveld refinement, FTIR, and TEM. In particular, we obtained pure and crystalline magnesium and calcium hydroxide suspensions, showing the typical brucite crystal structure with a hexagonal lamellar morphology and dimensions generally <100 nm. With respect to the strontium and barium hydroxide suspensions, we observed different kinds of hydroxides (either anhydrous and hydrate forms), characterized by orthorhombic or monoclinic crystal lattices with rod-like nanostructured morphologies. Despite the different morphologies, all synthesized nanoparticles appear constituted by a superimposition of primary nanoparticles, of dimensions ranging from a few to 15 nm, correlated to the increase in the atomic number of the alkaline earth metal.

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