Chromium telluride (Cr₂Te₃) is an inorganic chemical compound. It is composed of the

chromium(III) Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard, and brittle transition metal. Chromium metal is valued for its high corrosion resistance and hardne ...

cation An ion () is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convent ...

and the telluride anion. It has a shadowy gray color, and has a hexagonal crystal structure.

Properties

Thermodynamic

Chromium telluride samples that are highly saturated with tellurium were found to crystallize in a hexagonal structure, but trigonal lattice distortions are also possible.

Magnetic

Chromium telluride is strongly paramagnetic, and it can be used in the construction of nanocrystals. In addition, the compound also shows

ferromagnetic Ferromagnetism is a property of certain materials (such as iron) which results in a large observed magnetic permeability, and in many cases a large magnetic coercivity allowing the material to form a permanent magnet. Ferromagnetic materials ...

properties. By creating thin films of chromium telluride, the compound can be tested by reflection high-energy electron diffraction (RHEED), scanning tunneling microscopy (STM), vibrating sample magnetometry, and other physical property measurements. RHEED patterns indicate the flat, smooth growth of chromium telluride film. STM testing shows that the surface atoms of the compound arrange themselves in a hexagonal pattern. The Curie temperature was found to be 180 K When transitioning between paramagnetic and ferromagnetic forms of magnetism, the surrounding magnetic field collapse into two independent curves with a sole scaling equation. However, chromium telluride can still continue with a reversal of magnetism. When being measured at room temperature, the anomalous

Hall voltage The Hall effect is the production of a voltage difference (the Hall voltage) across an electrical conductor that is transverse to an electric current in the conductor and to an applied magnetic field perpendicular to the current. It was discove ...

of chromium telluride seems to consist of both negative anomalous and positive normal component. The negative anomalous component exhibits saturation against the intensity of the magnetic field, while the positive normal component can be ascribed to hole conduction. This is measured from room temperature to 400 °C with a-c sample current and d-c magnetic field.

References

{{Tellurides Chromium(III) compounds Tellurides