| 词条 | Spin canting |
| 释义 |
Some antiferromagnetic materials exhibit a non-zero magnetic moment at a temperature near absolute zero. This effect is ascribed to spin canting, a phenomenon through which spins are tilted by a small angle about their axis rather than being exactly co-parallel. Spin canting is due to two factors contrasting each other: isotropic exchange would align the spins exactly antiparallel, while antisymmetric exchange arising from relativistic effects (spin-orbit coupling) would align the spins at 90° to each other. The net result is a small perturbation, the extent of which depends on the relative strength of these effects.[1] This effect is observable in many clusters{{Definition needed|date=August 2016}} such as hematite.[2] References1. ^{{Cite book|author=Richard Winpenny|title=Molecular Cluster Magnets|publisher=World Scientific|year=2011|isbn=9789814322942|page=119}} 2. ^{{Cite web|url=http://magician.ucsd.edu/essentials/webbookse18.html#x23-280079|title=Ferromagnetism|publisher=University of California, San Diego|accessdate=2 January 2013}} 2 : Magnetic ordering|Spintronics |
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