High density data storage based on the atomic force microscope
H.J. Mamin, R.P. Ried, et al.
INVMTC 1998
Magnetic resonance force microscopy (MRFM) is based on measuring the attonewton-scale force between nuclear or electronic spins and a magnetic tip. The force is directly proportional to the magnetic field gradient generated by the tip, making a high moment nanoscale magnet desirable. Dysprosium, with a bulk magnetization 70% higher than iron, is a suitable candidate for such a tip. We have performed MRFM to quantitatively characterize two Dy nanomagnets. We find that magnetic field gradients as high as 6 MT/m (60 G/nm) can be generated, a 40% enhancement compared to our previous FeCo tips. © 2012 American Institute of Physics.
H.J. Mamin, R.P. Ried, et al.
INVMTC 1998
H.J. Mamin, L.-S. Fan, et al.
Sensors and Actuators: A. Physical
M. Poggio, C.L. Degen, et al.
Applied Physics Letters
H.J. Mamin, M.H. Sherwood, et al.
Physical Review Letters