A structural phase transition induced by an external magnetic field

Article Abstract:

Examination of the structural transformation of La(1-x)Sr(x)MnO3 reveals that application or removal of magnetic field can stimulate the structural phase transition at a particular temperature. Structural transformations are significantly influenced by charge carriers, local spin moments and composition of perovskites. Application of an external magnetic field stimulates both reversible and irreversible changes in the crystal structure for x = 0.170.

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Current switching of resistive states in magnetoresistive manganites

Article Abstract:

Magnetoresistive devices respond to a magnetic field by exhibiting major changes in electrical resistance, which has helped to improve magnetic recording systems. A study shows that the resistive states in the manganites can be switched by the magnetic field, but also by an electric field. This phenomenon could be used to provide routes for the fabrication of micrometre or nanometre scale electromagnets.

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Giant magnetoresistance of manganese oxides with a layered perovskite structure

Article Abstract:

An alternative strategy for optimizing the magnetoresistive properties of manganese oxides is the synthesis of layered variants of the cubic perovskite parent compounds that have a controlled number of MnO2 sheets per unit cell. The technique is similar in structure to the strategy employed for the systematic exploration of the high-transition-temperature copper oxide superconductors.

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