Giant Magnetoresistance in Transition Metal Oxides

Science  19 Apr 1996:
Vol. 272, Issue 5260, pp. 369-370
DOI: 10.1126/science.272.5260.369


Some materials exhibit large changes in electrical resistance in the presence of a magnetic field, and this change can be used in applications from sensor technology to magnetic data storage. In their Perspective, Rao and Cheetham discuss magnetoresistance in perovskite manganates, where the effect is unusually strong. Much has been learned about these materials, and this understanding is driving the search for new materials with even more impressive properties.