Lanthanum cobaltite explained

Lanthanum cobaltite is a perovskite with chemical formula LaCoO₃. As a solid, the structure LaCoO₃, will exist as rhombohedral material at room temperature with ferroelastic properties; though at temperatures above ~900 °C a phase transition to a cubic lattice occurs.^{[1] [2]}

It is also common of LaCoO₃ to be utilized with either dopants or exhibit oxygen non-stoichometry where it may assume the structure La_1−xA'_xCo_1−yB'_yO_3± where is some small quantity^[3] making this class of perovskites extremely versatile for catalysis, one such commonly utilized material is lanthanum strontium cobalt ferrite otherwise known as LSCF.

Notes and References

1. Kleveland. Kjersti. Ferroeleastic Behavior of LaCoO₃. Journal of the American Ceramic Society. 2001. 84. 9. 2029–2033. 10.1111/j.1151-2916.2001.tb00953.x .
2. Petrov. A. N.. Kononchuk. O. F.. Andreev. A. V.. Cherepanov. V. A.. Kofstad. P.. 1995-09-01. Crystal structure, electrical and magnetic properties of La_1−xSr_xCoO_3−y. Solid State Ionics. 80. 3. 189–199. 10.1016/0167-2738(95)00114-L.
3. Orlovskaya. Nina. Mechanical properties of LaCoO₃ based ceramics . Journal of the European Ceramic Society. 2000. 20. 1. 51–56. 10.1016/S0955-2219(99)00084-9. 10.1.1.516.9621.