Projects per year
A synthetic basalt comprising magnetic Fe3O4 grains (∼ 50 nm to ∼ 500 nm in diameter) is investigated using a range of complementary nano-characterisation techniques. Off-axis electron holography combined with in situ heating allowed for the visualisation of the thermally-induced magnetic relaxation of an Fe3O4 grain (∼ 300 nm) from an irregular domain state into a vortex state at 550C, just below its Curie temperature, with the magnetic intensity of the vortex increasing on cooling.
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- 2 Finished
1/04/13 → 31/03/18
1/01/13 → 31/03/17