Monthly Archives - February 2023

Hidden properties of nanoscale germanium telluride

Germanium telluride (GeTe) is a ferroelectric Rashba semiconductor with many interesting properties. The crystals are made of nanodomains whose ferroelectric polarization can be changed by an applied electric field. This ferroelectric property can also be used to change the spin of electrons in each domain, thanks to the so-called Rashba effect. Germanium telluride is therefore an interesting material for use in spintronic devices, allowing data processing with significantly less energy input. Now, HZB and a team from Lomonosov Moscow State [...]

Chemical properties and uses of stannous chloride

Stannous chloride, chemical formula SnCl2, also known as tin dichloride. The former is a transparent crystal with a melting point of 246℃, a boiling point of 652℃, and a relative density of 3.95. Soluble in water and oxidized in air to form insoluble chloride oxides. It is hydrolyzed in water to form a precipitation of basic stannous chloride (Sn(OH)Cl). When preparing its solution, it is necessary to dissolve it with concentrated hydrochloric acid and then dilute it to inhibit [...]

The researchers produced defective cuprous iodide films

According to foreign media reports, a fault-free film of cuprous iodide composed of a crystal has been created by physicists at RIKEN. Atomic planar samples are the driving force behind better semiconductors. Semiconductors are at the heart of many optoelectronic devices, including lasers and light-emitting diodes (leds). Engineers hope to use cuprous iodide in semiconductors because it is an excellent conductor that remains stable above room temperature. The problem is that it is difficult to make a film of cuprous [...]

Preparation of nickel silicide nanowires

The molecular weight of nickel silicate is 145.51, the melting point is 1309℃, and the relative density is 7.217. Nickel silicate dissolves rapidly in hydrofluoric acid, slowly in hydrochloric acid, and insoluble in water. Nickel silicate reacts violently with fluorine at room temperature to white heat, and chlorine gas reacts with red heat. Nickel silicate decomposes in aqua regia. Method: The silicon oxide, nickel oxide (Ⅱ) and aluminum can be heated in the blast furnace. Metallic silicide has low resistivity, [...]