The "'antiperovskite crystal structure "'is similar to the perovskite structure that is common in nature.
12.
With a perovskite structure, this material exhibits piezoelectric properties and is used as a transducer in the interconversion of sound and electricity.
13.
The most common mineral in the Earth is bridgmanite, a magnesium-rich silicate which adopts the perovskite structure at high pressure.
14.
Because of the flexibility of bond angles inherent in the perovskite structure there are many different types of distortions which can occur from the ideal structure.
15.
The layer is then treated with a solution of methylammonium iodide and annealed, turning it into the double salt methylammonium lead iodide, with a perovskite structure.
16.
The typical perovskite structure is ABX 3, where A is a monovalent cation, and B is a divalent metallic cation and X is a monovalent anion.
17.
The pentoxide Pa 2 O 5 combines with rare-earth metal oxides R 2 O 3 to form various nonstoichiometric mixed-oxides, also of perovskite structure.
18.
It lends its name to the class of compounds which have the same type of crystal structure as CaTiO 3 ( XII A 2 + VI B 4 + X 2 " 3 ) known as the perovskite structure.
19.
Bigger cations have a bigger coordination number because of the increase in relative size as compared to oxygen ( the last mantle, many minerals, especially silicates such as olivine and garnet will change to a perovskite structure, where silicon is in octahedral coordination.
20.
With alkali metals " A ", the crystals have a chemical formula APaO 3 and perovskite structure, or A 3 PaO 4 and distorted rock-salt structure, or A 7 PaO 6 where oxygen atoms for a hexagonal close-packed lattice.
