A magnetic-resonance imaging system including a magnetic-resonance sensor
including at least one magneto-resistive element; and a sample disposed
adjacent to the magnetic-resonance sensor and configurable to generate a
magnetic-resonance signal, wherein the magneto-resistive element is
configured to generate a magnetic field in response to a current driven
through the magneto-resistive element, the magnetic field being
configured to polarize spins of the sample, and detect a
magnetic-resonance signal from precession of the spins.
