Spontaneous Bubble Domain Formation in a Layered Ferromagnetic Crystal
- 18 June 1999
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 284 (5422) , 1969-1971
- https://doi.org/10.1126/science.284.5422.1969
Abstract
Magnetic domain structure on the surface of the layer-structured ferromagnet La 1.4 Sr 1.6 Mn 2 O 7 was observed in the temperature range from 37 to 97 kelvin with a scanning Hall probe microscope. The sensitivity to temperature of the domain structure changes was large relative to that in conventional ferromagnets. The stable and spontaneous appearance of magnetic bubble domains without an external magnetic field was observed in the neighborhood of 70 kelvin. The phenomenon observed could provide a potential route toward magnetic bubble memory.Keywords
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