(American Institute of Physics, 2001-06-01) Chung, S. H.; Shinde, S. R.; Ogale, S. B.; Venkatesan, T.; Greene, R. L.; Dreyer, M.; Gomez, R. D.
A commercial atomic force microscope/magnetic force microscope ~MFM! was modified to cool
magnetic samples down to around 100 K under a high vacuum while maintaining its routine imaging
functionality. MFM images of a 120 nm thick La0.7Ca0.3MnO3 film on a LaAlO3 substrate at low
temperature show the paramagnetic-to-ferromagnetic phase transition. Evolution of magnetic
domains and magnetic ripples with decreasing temperature are also observed near the edge of a 20
nm thick patterned Co film on a Si substrate.
