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Low temperature behavior of magnetic domains observed using a magnetic force microscope



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 La 0.7 Ca 0.3 MnO 3 La 0.7 Ca 0.3 MnO 3 film on a LaAlO 3 LaAlO 3 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. © 2001 American Institute of Physics.



Journal of Applied PhysicsAmerican Institute of Physics

Published: Jun 1, 2001

Keywords: magnetic force microscopy; magnetic domains; lanthanum compounds; calcium compounds; ferromagnetic-paramagnetic transitions; cobalt; magnetic thin films

DOI: 10.1063/1.1360262

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