The present invention relates to devices that can be manipulated or controlled with a magnetic field, such as a spin-valve device, an organic light-emitting device, a compass, or a magnetometer. The devices of the invention comprise an organic interlayer comprising a deuterated organic material.
 This invention was made with U.S. government support under Grant No. 04-ER46109 awarded by the United States Department of Energy. The U.S. government has certain rights in the invention.