Lanthanum strontium manganite

Lanthanum strontium manganite (LSM or LSMO) is an oxide ceramic material with the general formula La1−xSrxMnO3, where x describes the doping level.

This change in the unit cell is explained on the basis of the Goldschmidt tolerance factor for perovskites.

[1] LSM has a rich electronic phase diagram, including a doping-dependent metal-insulator transition, paramagnetism and ferromagnetism.

LSM is primarily an electronic conductor, with transference number close to 1.

In research, LSM is one of the perovskite manganites that show the colossal magnetoresistance (CMR) effect,[6] and is also an observed half-metal for compositions around x=0.3.