檢視磁滞的原始碼

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|<center>'''磁滞'''<br><img
src="https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fbkimg.cdn.bcebos.com%2Fpic%2F960a304e251f95ca53908c7ac2177f3e66095290&refer=http%3A%2F%2Fbkimg.cdn.bcebos.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1671200901&t=78797fb7ca9abaeb137e04a95742ddca " width="280"></center><small>  圖片來自百度</small> 
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'''物理现象'''

'''磁滞'''现象是指铁磁性物理材料（例如：铁）在[[磁化]]和去磁过程中，铁磁质的磁化强度不仅依赖于外[[磁场强度]]，还依赖于原先磁化强度的现象。 当外加磁场施加于铁磁质时，其原子的偶极子按照外加场自行排列。即使当外加场被撤离，部分排列仍保持：此时，该材料被磁化。 一旦被磁化了，其磁性会继续保留。要消磁的话，只要施加相反方向的磁场就可以了。这亦是[[硬盘]]的[[记忆运作原理]]。

*中文名:[[磁滞现象]]

*外文名:Magnetic hysteresis

*应    用:硬盘