What property does Bismuth Telluride have?

Bismuth-telluride, a powdery gray substance with the formula Bi2Te3, is a material that contains the molecule Bi2Te3. Bismuth telluride, a semiconductor, has a good electrical conductivity but mediocre thermal conductivity. It is not fatal to consume large quantities of bismuth, but it can cause serious harm if ingested. The material is able to allow electrons on its surface to move at room temperatures without consuming energy, resulting in a significant increase in the speed of chip operation.

What is the preparation method of Bismuth Teluride?

Bismuth Telluride Powder Materials can be made into different devices. There are several common preparation methods: plasma activated sintering, hot pressing, Bridgman and zone melting.

1. Zone melting: This is a method for growing single crystals through melting and crystallization polycrystalline ingots. The rod-shaped ingot of polycrystalline material is melted only in a small area. The rest is left solid.

2. Bridgman method is a method of crystal growth that is commonly used. It’s also called crucible descending. This method involves putting the crystal-growing material in a cylindrical pot and passing it slowly through a resistance or high-frequency furnace that has a temperature gradient. The temperature of a furnace should be a little higher than the melting points of crystal materials. The melting of crystal material occurs when the crucible drops into the heating center. If the crucible falls slowly after passing through this center, it is the temperature in the bottom that begins to decrease. This method works best with common ionic compound, like halides of metals such as alkali and earth metals.

3. Czochralski technique: Chukraski, in 1917, invented this method to produce high-quality single crystalline from melt. This method involves placing crystal material in a crucible. Use the pull rod after the crystal melts and heats the crucible.