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电子工业的迅猛发展,开阔了工业界对非铁、钴基多功能磁性材料的需要。稀土金属具有各不相同的磁性结构及确定的温度范围,它们的磁性能,以一种复杂的方式依温度而变化。只有钆在室温显示出强烈的磁性;在较低的温度下,原子序数比钆为大的铽、镝等元素表现出比铁或钴具有更强的磁性,井且还具有非常大的磁学各向异性。
The rapid development of the electronics industry has opened up the need of the industry for non-ferrous and cobalt-based multi-functional magnetic materials. Rare earth metals have different magnetic structures and defined temperature ranges, and their magnetic properties vary with temperature in a complex way. Only gadolinium shows strong magnetism at room temperature; elements such as terbium, dysprosium and the like, which have larger atomic numbers than gadolinium, exhibit stronger magnetism than iron or cobalt at lower temperatures and also have very large magnetics Anisotropy.