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・ Spinach in the United States
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Spin canting
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Spin canting : ウィキペディア英語版
Spin canting
Some antiferromagnetic materials exhibit a non-zero magnetic moment at a temperature of 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.
This effect is observable in many clusters such as hematite.
== References ==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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