| 词条 | Helimagnetism |
| 释义 | {{Unreferenced stub|auto=yes|date=December 2009}} Helimagnetism is an incommensurate form of magnetic ordering that results from the competition between ferromagnetic and antiferromagnetic exchange interactions, and is typically only observed at liquid helium temperatures.{{citation needed|date=October 2017}} Spins of neighbouring magnetic moments arrange themselves in a spiral or helical pattern, with a characteristic turn angle of somewhere between 0 and 180 degrees. It is possible to view ferromagnetism and antiferromagnetism as helimagnetic structures with characteristic turn angles of 0 and 180 degrees respectively. Helimagnetic order breaks spatial inversion symmetry, as it can be either left-handed or right-handed in nature. {{magnetic states}}{{CMP-stub}} 2 : Magnetic ordering|Liquid helium |
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